IPMU

April 2010 –March 2011

Annual Report 2010

IPMU

ANNUAL REPORT 2010

April 2010 – March 2011

Institute for the Physics and Mathematics of the Universe (IPMU)
Todai Institutes for Advanced Study
The University of Tokyo
5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan TEL: +81-4-7136-4940 FAX: +81-4-7136-4941 http://www.ipmu.jp/

World Premier International
Research Center Initiative

Todai Institutes for Advanced StudyHistory (April 2010–March 2011)

April• Workshop “Recent advances in mathematics at IPMU II”• Press Release “Shape of dark matter distribution”• Mini-Workshop “Cosmic Dust”

May• Shaw Prize to David Spergel• Press Release “Discovery of the most distant cluster of galaxies”• Press Release “An unusual supernova may be a missing link in stellar evolution”

June• CL J2010: From Massive Galaxy Formation to Dark Energy• Press Conference “Study of type Ia supernovae strengthens the case for the dark energy”

July• Institut d’Astrophysique de Paris Medal (France) to Ken’ichi Nomoto• IPMU Day of Extra-galactic Astrophysics Seminars: Chemical Evolution

August• Workshop “Galaxy and cosmology with Thirty Meter Telescope (TMT)”

September• Subaru Future Instrumentation Workshop• Horiba International Conference COSMO/CosPA

October• The 3rd Anniversary of IPMU, All Hands Meeting and Reception• Focus Week “String Cosmology”• Nishinomiya-Yukawa Memorial Prize to Eiichiro Komatsu• Workshop “Evolution of massive galaxies and their AGNs with the SDSS-III/BOSS survey”• Open Campus Day: Public lecture, mini-lecture and exhibits

November• Yukawa-Kimura Prize to Tadashi Takayanagi• Domenico Orlando and Susanne Reffert Selected for Highlights of Classical Quantum Gravity
Journal• PSJ Young Scientist Award to Fuminobu Takahashi• Mini-Workshop “Neutrinos”

Copyright© IPMU Annual Report 2010
All rights reserved
Editorial board members
Kazuo Abe (chair), Masayuki Nakahata, Ken’ichi Nomoto, Kyoji Saito, Tsutomu Yanagida
Institute for the Physics and Mathematics of the Universe
Todai Institutes for Advanced Study, The University of Tokyo
5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan
Tel: +81-4-7136-4940 Fax: +81-4-7136-4941
http://www.ipmu.jp• Workshop “Population III Gamma-Ray Burst”
December• Inoue Science Prize to Toshiyuki Kobayashi• The 4th Meeting of Origin of Matter and Evolution of Galaxies Institute “Supernova Explosions
and Nuclear-synthesis”• Workshop “Science of Prime Focus Spectrograph (PFS)”

January• Press Release “Sloan Digital Sky Survey III data release and IPMU contribution”• IPMU as the first entity of Todai Institutes for Advanced Study (TODIAS)

February• IPMU Workshop “Black Holes”• Young Scientist Award in Theoretical Physics to Seong Chan Park
• Bruno Pontecorvo Prize to Yoichiro Suzuki and Serguey Petcov• Workshop “Log Hodge Theory and Elliptic Flat Invariants”

March• TODIAS Inauguration Lecture• The 3.11 Earthquake. Interruptions and Comradeship

IPMU Annual Report 20101

1 Mission“Everything is made of atoms” had been thebasic concept that had dominated our viewof the universe for the past two centuries.
The universe was made of atoms that obeyed
quantum mechanics, and all gravity phenomena on earth and in the solar system were welldescribed by Einstein’s general relativity.
But the 1998 discovery that “the universe isexpanding with an accelerated speed” haschanged our entire understanding. Many researchers now believe that mysterious darkenergy must be distributed across the universe
and the cause of this acceleration.
It has been known for some time that thegalaxies must contain large amount of invisible dark matter in order to hold their spiralshapes. But we do not know what they are.
Hitoshi Murayama, IPMU Director

An attempt to describe the early and still tiny
universe faces other type of serious difficulty
because quantum fluctuation becomes so enormous that theories of general relativity and quantum mechanics break down. Therefore, a necessity to combine quantum mechanics and general relativity, which has beena subject for fundamental understanding of elementary particles, also appears as we try to understand the
beginning of the universe. Many researchers believe that superstring theory can solve this problem. But its
whereabouts is still not known.

Missionattach to the Subaru telescope. Using “Gravitational Lensing Effect” we perform three-dimensional mappingof dark matter. Furthermore we explore the properties of dark energy by examining how the matter distribution varies with time.
We use three underground detectors: Super-Kamiokande to search for “supernova relic neutrinos” (neutrinos
that are produced by ancient supernova explosions and wander through the present universe); XMASS to
directly search for dark matter that must be present in our Milky Way Galaxy; KamLAND to look for an important but yet to be discovered neutrino-less double beta decay.
We study phenomenology in particle physics to explore physics beyond the Standard Model. Data from collider experiments and astrophysical observations are closely examined for any clue of dark matter candidates,
extra dimensions, and other exotic phenomena.
Investigation of dark matter and dark energy requires further development of theory and mathematics. Superstring theory, which attempts to unify gNGK-barubu.c.inddeneral relativity and quantum theory and is considered as a candidate for the ultimate unified theory of elementary particles, requires further investigationof geometrical properties of the theory. At IPMU, mathematicians and physicists work closely on this problem. String theory, if indeed the ultimate theory, should give consistent answers to a wide subject in physics.
String theorists at IPMU initiate active collaboration with condensed matter physicists of other institutionsin the area such as superconductivity. Systematic investigation to apply superstring theory to particle physics
phenomena such as low energy baryon physics is also pursued at IPMU.
Teatime is held everyday at 3 o’clock at the Piazza Fujiwara, where lively discussion takes place among researchers of different disciplines. This large open space that occupies the center of the IPMU building fromthe 3rd floor and up was designed to attract scientists and have free and informal interactions. The word of
Galileo “The Universe is written in the language of mathematics” is inscribed on the obelisk at the center ofthe space.

Our strategy to face these challenges is to bring the world top-level scientists in mathematics, physics andastronomy into one place. A close collaboration among those traditionally different research fields should induce a synergistic effect and develop into new ideas and new concepts.
It is essential to include mathematics
in this approach. History teaches usthat breakthrough in search for fundamental laws of nature was always
built on the invention of new mathematics. Galileo, who lived at thedawn of cosmology in the 16 to 17th
century, wrote that “The Universe is
written in the language of mathematics.” More than ever before, we need aclose collaboration of mathematicianswith astronomers and physicists inorder to answer big questions of theuniverse we face today.
We develop ultra-high resolution optical instruments, HyperSuprime Camfor collecting images and PrimeFocus
Spectrograph for studying spectroscopy both with a large field of view, and

2

IPMU Annual Report 2010

Atoms: 4.4%

Stars: 0.5%

Neutrinos: 0.1%?

Dark Matter:

22%

Does not emit light and invisible to us, butneeded for holding the galaxies together.

Dark Energy:

73%

Distributed across the Universe
and responsible for the accelerated
expansion.

Composition of the universe

Composition of the universe
We knew only 5% of the universe!

IPMU Annual Report 20103

Introduction

2 Introduction
The biggest news for us in JFY 2010 came in January 2011. On 11th of January, the University of Tokyo
established the Todai Institutes for Advanced Study (TODIAS), and approved IPMU as its first memberinstitute in this new and permanent organization.
The IPMU Director Hitoshi Murayama said, “I deeply thank President Hamada for his bold vision, Director
Okamura for his involvement in kick-starting IPMU, and everybody in the Todai community for making the
TODIAS possible. This is a critical step for IPMU to become a permanent member of the Todai community.
Indeed this provides IPMU a “citizenship” within Todai, and a wonderful opportunity to continue its research on the fundamental questions about the Universe. The IPMU members and I will do our best to fulfill
the expectations in TODIAS, and ask for your continued support.”
IPMU was founded on October 1, 2007 by the World Premier International Research Center Initiative (WPI).
The WPI funding has a term of 10 years, and mandates (1) world class research, (2) internationalization by
adopting English as the official language and employing a large number of non-Japanese researchers, (3) scientific breakthroughs by fusion of disciplines, (4) new organizational structure unprecedented in Universities
in Japan. This way, IPMU is required to achieve a high visibility to the worldwide scientific community.

Contents

1

Mission…………………………………………………………………………………………………

2

2

Introduction… ………………………………………………………………………………………

5

3

Organization …………………………………………………………………………………………

8

4

Staff……………………………………………………………………………………………………… 11

5

Research Program… …………………………………………………………………………… 14

6

Research Highlight… …………………………………………………………………………… 43

7Awards………………………………………………………………………………………………… 49

8Seminars……………………………………………………………………………………………… 51

9

Conferences………………………………………………………………………………………… 57“We are ushering in a time of great change. At this critical juncture, society
expects universities and scholarship to play an important role in steering thatchange for the betterment of the world,” commented Junichi Hamada, thepresident of the University of Tokyo on this occasion, and went on saying, “Aspart of the measures to achieve these goals, we have established TODIAS
as a university-wide organization. It will comprise research institutes that canfunction as a world-leading center of knowledge, aiming to enhance the University’s academic excellence as a whole and further advance our internationalization.”
Junichi Hamada

UT President

10 Conference Talks… ……………………………………………………………………………… 58
11 Visitors………………………………………………………………………………………………… 68
12 Publications… ……………………………………………………………………………………… 77
13 Preprints……………………………………………………………………………………………… 108
14 Outreach and Public Communications… ……………………………………………… 118
Sadanori Okamura
TODIAS Director

4

IPMU Annual Report 2010

“It is a tremendous honor and privilege that President Hamada has givenme,” said Sadanori Okamura who was appointed to the founding director of
TODIAS. He commented, “At the inaugural steering committee on Jan.11,
2011, the members were in consensus that IPMU was a suitable organization that met all the criteria. We have decided to designate IPMU as the first
institute within TODIAS,” and concluded by saying “I am deeply committed
to providing the best possible research environment for IPMU so that it canconduct research activities more quickly, flexibly and actively under stable
management.”

IPMU Annual Report 2010

5

Number

Foreign

FemalePrincipal Investigators

18

4

1

Faculty (including 4 PIs)

24

5

0

Postdoctoral Fellows

43

33

5

Joint Appointments

61

24

3

Long-term Visitors

32

32

1

Students

20

2

0

Total

194

100

10

Introduction

Number of IPMU Research staff (March 2011)

Research Activities in JFY2010
Conferences

16

Seminars

186

Visitors (foreign)

Public lecture was held to celebrate the inauguration of the Todai Institutes for Advanced Study on March 9, 2011.

862 (478)

Preprints

234

Publications

236

Inauguration of TODIAS was celebrated on March 9, 2011 at Yasuda Auditorium. Following speeches by the
University of Tokyo President Junichi Hamada and the TODIAS Director Sadanori Okamura, public lecture
was presented by the IPMU Director Hitoshi Murayama and a distinguished guest David Gross, the Directorof Kavli Institute for Theoretical Physics of the University of California, Santa Barbara and the 2004 Nobel
laureate in physics.

Starting from scratch, IPMU has been
appointing researchers from around theworld, setting its research agenda, andbuilding up its infrastructure in a dizzying pace. In three years it has grown to a
research institute of 67 full-time researchstaff (10 professors, 9 associate professors, 5 assistant professors, 43 postdoctoral fellows) and 38 administrative andsupport staff.
Total number of scientific staff including
principal investigators, full time staff,
joint appointments, students and longterm visitors (more than one month)reached 194 as compared with 165 one IPMU research staff gathered for the all hands meeting in October.
year ago. The JFY 2010 was another very
productive one year for the IPMU scientists. We published 236 papers in refereed journals and produced 234
preprints, many of which are being submitted to refereed journals. We hosted 16 international conferences
and held 186 seminars. We were visited by 862 scientists, of which 478 from abroad.

6

IPMU Annual Report 2010

IPMU Annual Report 2010

7

The IPMU Director is appointed by the President of the University of Tokyo and reports directly to the President. The Director has a complete authority of making a wide range of decisions including proposing recruitment of the Principal Investigators to the President, and appointing other research staff and administrative
staff. The Director is assisted by two Deputy Directors and Administrative Director. They hold the Executive
Board (EB) regularly to ensure smooth operation of the Institute. The EB has direct access to the Office of
the President for consultations on both scientific and administrative matters.
The Scientific advisory Committee (SAC) gives advice to the Director on hiring scientific staff and setting scientificstrategies. As of March 2011, the members consist of two Deputy Directors and five among IPMU’s 18 Principal Investigators, all appointed by the Director.

Since IPMU has become a permanent member–institute of TODIAS in January 2011, the IPMU Director is
now required to report the appointments of new principal investigators and faculty members to the TODIAS Director. Also, to clear the university’s formality in hiring faculty members, the IPMU decisions have to be endorsed by
the IPMU’s Steering Committee consisting of the EB members plus two faculty members, Kyoji Saito and Tsutomu
Yanagida.

The Scientific Advisory Committee members (March 2011)
Hiroaki Aihara
Yoichiro Suzuki
Toshitake Kohno
Hirosi Ooguri
Kyoji Saito
David Spergel
Tsutomu Yanagida

U of Tokyo, high energy physics
U of Tokyo, ICRR, astroparticle physics
U of Tokyo, mathematics
Caltech, particle theory
IPMU, mathematics
Princeton U, astrophysics
IPMU, particle theory

The External Advisory Committee (EAC), appointed by the University President, reviews annually the scientific achievement and activities of the Institute and advises the President on scientific priorities and the research activities to keep the Institute stay on the course of their objectives.

The External Advisory Committee members (March 2011)
John Ellis
Makoto Gonokami
Young-Kee Kim
Sadayoshi Kojima
David Morrison
Roberto Peccei
Steven Kahn
Nicolai Reshetikhin

CERN, particle theory
U of Tokyo, quantum optics
Fermilab/U of Chicago, high energy physics
Tokyo Tech, mathematics
UC Santa Barbara, mathematics and physics
UCLA; Chair, particle theory
SLAC/Stanford U, astrophysics
UC Berkeley, mathematics

IPMU has rather unique approach in organizing the research objectives, where the world’s leading scientists
in their research fields are appointed as the Principal Investigators. There are 18 of them at the moment andthey are affiliated to IPMU and other departments in the Host Institution (U of Tokyo) as well as other institutions. The Principal Investigators have a large autonomy in the research they conduct. They can makeproposals to the Director to hire research staff at IPMU to help their research. The Director’s approval on the
proposed appointments will reflect the scientific vision and priorities set by the Director, who may consult the
SAC as needed.

Host Institute (Univ. of Tokyo)

Collaborating Institutions (domestic)

Department of Mathematics
Institute for Cosmic Ray Research(Kashiwa, Kamioka)
Department of Physics
Department of Astronomy

Collaborating Institutions

Organization

3 Organization

National Astronomical
Observatory in Japan

IPMU
Kashiwa Campus
Kamioka Satellite(international)

Department of Physics,
Univ. of California Berkeley, USA
Department of Astrophysical Sciences,
Princeton University, USA

Berkeley
Satellite

Institut des Hautes
Études Scientifiques (IHES), France

Department of Physics,
Kyoto University
High Energy Accelerator
Research Organization (KEK)
Yukawa Institute for
Theoretical Physics,
Kyoto University
Research Center of
Neutrino Science,
Tohoku University

Collaboration takes place with many institutions.

Collaborating Branches within the Host Institution (University of Tokyo)
Department of Physics
Institute for Cosmic Ray Research
Graduate School of Mathematical Sciences
Department of Astronomy

IPMU tries to have close relations with similar research institutions in the world for encouraging researchand educational exchanges. We have signed either agreements or memorandum of understanding with thoseinstitutions.
The administrative staff is an integral part of the Institute. Providing the best possible environment to theresearchers in the Institute is important for the IPMU’s mission. This part is headed by the Administrative
Director. Its function also enables the Director to spend more time to consider the Institute at large and focus
on the direction of the research.
Collaborating Institutions
National Astronomical Observatory of Japan (NAOJ)
Yukawa Institute for Theoretical Physics, Kyoto University
Department of Physics, Kyoto University
Research Center for Neutrino Science, Tohoku University
Department of Physics, University of California Berkeley
Department of Astrophysical Sciences, Princeton University
Institut des Hautes Études Scientifiques (IHES)High Energy Accelerator Research Organization (KEK)8

IPMU Annual Report 2010

IPMU Annual Report 20109

University of California Berkeley, Physics Department
University of Chicago, Department of Astronomy and Astrophysics
Institute for Advanced Study, School of Natural Sciences
Johns Hopkins University, Department of Physics and Astronomy
New Mexico State University, Astronomy Department
Princeton University, Department of Astrophysical Sciences
University of Washington, Astronomy Department
Washington State University, Department of Mathematics
Stanford University, Kavli Institute for Particle Astrophysics and Cosmology (KIPAC)
Technical University of Munich, Physics Department
Ludwig Maximilian University of Munich, Physics Department
Max Planck Institute, Astronomy and Astrophysics
Max Planck Institute, Extra-terrestrial Physics
Max Planck Institute, Physics Department
European Southern Observatory (ESO)
National Taiwan University, Research Center for Cosmology and Particle Astrophysics

4 Staff
Director

Hitoshi Murayama, particle theory, cosmology

Deputy Directors

Hiroaki Aihara, high energy physics, astrophysics
Yoichiro Suzuki, astroparticle physics, neutrino physics

Principal Investigators

Hiroaki Aihara, high energy physics, astrophysics
Alexey Bondal, mathematics
Masataka Fukugita, astrophysics
Kunio Inoue, neutrino physics
Takaaki Kajita, neutrino physics
Stavros Katsanevas, astroparticle physics
Toshitake Kohno, mathematics
Hitoshi Murayama, particle theory, cosmology
Masayuki Nakahata, astroparticle physics
Mihoko Nojiri, particle theory
Ken’ichi Nomoto, astronomy
Hirosi Ooguri, mathematical physics, string theory
Kyoji Saito, mathematics
Henry Sobel, astroparticle physics
David Spergel, astrophysics
Naoshi Sugiyama, cosmology
Yoichiro Suzuki, astroparticle physics
Tsutomu Yanagida, particle theory

Faculty Members

Paul Frampton (till May 2010), particle theory
Simeon Hellerman, string theory
Kentaro Hori, string theory
Hiroshi Karoji, astronomy
Satoshi Kondo, mathematics
Keiichi Maeda, astronomy
Kai Martens, astropharticle physics
Andrei Mikhailov (till June 2010), string theory
Shigeki Matsumoto, cosmology
Todor Milanov, mathematics
Shinji Mukohyama, cosmology
Hitoshi Murayama, particle theory, cosmology
Ken’ichi Nomoto, astronomy
Kyoji Saito, mathematics
John Silverman, astronomy
Shigeki Sugimoto, string theory
Yuji Tachikawa, string theory
Masahiro Takada, cosmology
Fuminobu Takahashi (till January 2011), particle theory
Tadashi Takayanagi, string theory
Yukinobu Toda, mathematics
Akihiro Tsuchiya, mathematics
Mark Vagins, astroparticle physics

10

IPMU Annual Report 2010

Tsutomu Yanagida, particle theory
Naoki Yasuda, astronomy
Naoki Yoshida, astrophysics
Taizan Watari, string theory

Postdoctoral Fellows

Cosimo Bambi, cosmology
Tathagata Basak (till August 2010), mathematics
Alex Bene (till August 2010), mathematics
Melina Bersten, astronomy
Scott Carnahan, mathematics
Chuan-Ren Chen, particle theory
Won Sang Cho, particle theory
Rafael Da Silva De Souza, cosmology
Damien Easson (till December 2010), cosmology
Jason Evans, particle theory
Brian Feldstein, particle theory
Gaston Folatelli, astrophysics
Sergey Galkin, mathematics
Alexander Getmanenko, mathematics
Ahmet Emir Gumrukcuoglu, cosmology
Minxin Huang, string theory
Emille Ishida, cosmology
Keisuke Izumi, cosmology
Issha Kayo, (JSPS Fellow) astrophysics
Johanna Knapp, string theory
Alexandre Kozlov, neutrino physics
Daniel Krefl (till September, 2010), string theory
Tsz Yan Lam, astrophysics
Guillaume Lambard (till September 2010),
astroparticle physics
Wei Li, string theory
Yen-Ting Lin (till September 2010), astrophysics
Jing Liu, astroparticle physics
Sourav Mandal, particle theory
Takahiro Nishimichi, astrophysics
Atsushi Nishizawa, astronomy
Takaya Nozawa, astronomy
Yutaka Ookouchi, particle theory
Domenico Orlando, string theory
Seong Chan Park, particle theory
Michael Pichot, mathematics
Susanne Reffert, string theory
Tomoki Saito, astronomy
Kenneth Shackleton, mathematics
Cornelius Schmidt-Colinet, string theory
Kazuhiro Shimizu, (JSPS Grant-in-Aid), astrophysics
Jing Shu, particle theory
Yogesh Srivastava (till July 2010), string theory
Charles Steinhardt, astronomy
Matthew Sudano, particle theory

IPMU Annual Report 2010

Staff

Foreign Institutions having exchange program with IPMU

11

Graduate Students

Kouta Usui, particle theory
Gen Chiaki, astrophysics
Tomohiro Fujita, particle theory
Keisuke Harigaya, particle theory
Ayuki Kamada, particle theory
Yasuomi Kamiya, astronomy
William Klemm, particle theory
Sogo Mineo, high energy physics
Hironao Miyatake, high energy physics
Takashi Moriya, astronomy
Kimihiko Nakajima, astronomy
Ryoichi Nishio, particle theory
Ryosuke Sato, particle theory
Masato Shirasaki, astrophysics
Kohsaku Tobioka, particle theory
Tomonori Ugajin, particle theory
Wen Yin, particle theory
Kazuya Yonekura, particle theory
Xu-Feng Wang, particle theory
Satoshi Shirai, particle theory

Joint Appointments

Kou Abe (Tokyo ICRR), astroparticle physics
Mina Aganagic (UC Berkeley), string theory
Raphael Bousso (UC Berkeley), cosmology
Patrick Decowski (NIKHEF), high energy physics
Mamoru Doi (U Tokyo), astronomy
Yuri Efremenko (U Tennessee), neutrino physics
Tohru Eguchi (Kyoto YITP), field theory
Motoi Endo (U Tokyo), string theory
Sanshiro Enomoto (U Washington), neutrino physics
Andrea Ferrara (S.N.S. Pisa), astronomy
Stuart Freedman (LBNL), neutrino physics
Brian Fujikawa (LBNL), neutrino physics
Masaki Fukushima (Tokyo ICRR), astroparticle physics
Kaoru Hagiwara (KEK), particle theory
Lawrence Hall (UC Berkeley), particle theory
Koichi Hamaguchi (U Tokyo), particle theory
Yoshinari Hayato (Tokyo ICRR), neutrino physics
Masashi Hazumi (KEK), astrophysics
Karsten Heeger (Wisconsin), neutrino physics
Raphael Hirschi (U Keele), astronomy
Junji Hisano (Tokyo ICRR), particle theory
Petr Horava (UC Berkeley), string theory
Glen Horton-Smith (U Kansas), neutrino physics
Shinobu Hosono (U Tokyo), mathematical physics

12

IPMU Annual Report 2010

Ken’ichi Izawa (Kyoto YITP), particle theory
Masaki Kashiwara (Kyoto U), mathematics
Akishi Kato (U Tokyo), mathematical physics
Masahiro Kawasaki (Tokyo ICRR), cosmology
Edward Kearns (Boston U), neutrino physics
Chiaki Kobayashi (Australia), astronomy
Toshiyuki Kobayashi (U Tokyo), mathematics
Masayuki Koga (Tohoku U), neutrino physics
Eiichiro Komatsu (U Texas), cosmology
Yusuke Koshio (Tokyo ICRR), neutrino physics
Takahiro Kubota (Osaka U), string theory
Alexander Kusenko (UCLA), particle theory, astrophysics
Marco Limongi (INAF Rome), astronomy
Shigetaka Moriyama (Tokyo ICRR), neutrino physics
Takeo Moroi (U Tokyo), particle theory
Kengo Nakamura (Tohoku U), neutrino physics
Tsuyoshi Nakaya (Kyoto U), high energy physics
Yasunori Nomura (UC Berkeley), particle theory
Masami Ouchi (Tokyo ICRR), astronomy
Serguey Petkov (SISSA), particle theory
Andreas Piepke (U Alabama), neutrino physics
Yoshihisa Saito (U Tokyo), mathematics
Kate Scholberg (Duke U), neutrino physics
Hiroyuki Sekiya (Tokyo ICRR), neutrino physics
Masato Shiozawa (Tokyo ICRR), neutrino physics
Fedor Smirnov (Paris 6), mathematics
Michael Smy (UC Irvine), neutrino physics
James Stone (Boston U), high energy physics
Yasuo Takeuchi (Tokyo ICRR), neutrino physics
Atsushi Taruya (Tokyo RESCEU ), astrophysics
Nozomu Tominaga (Konan U), astrophysics
Edwin Turner (Princeton U), astrophysics
Alexander Voronov (U Minnesota), mathematics
Christopher Walter (Duke U), neutrino physics
Jun’ichi Yokoyama (Tokyo RESCEU), astrophysics
Ken-ichi Yoshikawa (U Tokyo), mathematics

Sergei Blinnikov (ITEP), astronomy
David Fallest (NCS), astrophysics
Vikram Rentala (Arizona), particle theory
Agnieszka Maria Bodzenta-Skibinska (Warsaw), mathematics
Stepan Paul (UCSB), mathematics
Charlie Beil (UCSB), mathematics
Brice Menard (CITA), astrophysics
Thomas O’Donnell (LBL), neutrino physics
Richard Eager (UCSB), mathematics
Alexander Voronov (Minnesota), mathematics
John Mangual (UCSB), mathematics
David R. Morrison (UCSB), mathematics
Yen-Ting Lin (ASIAA), astrophysics

Administration and Support

Kenzo Nakamura, Administrative Director (Project Professor)
Seiji Sugimura, General Manager, Administrative Division
Yonetaka Takano, Senior Specialist
Akira Ito, Chief Administrator

Financing

Yasuhiro Kato, Tomoko Yamanaka

SuMIRe Project

Hideaki Maruyama, Chihiro ImaiInternational Relations

Midori Ozawa, Kenichi Nakamura, Rie Ujita (Symposium),
Hiromi Kuboshima, Masami Nishikawa (Japanese
instructor),

Public Relations
Fusae Miyazoe

Secretarial Support

Staff

Hajime Takami, astrophysics
Masaomi Tanaka, astronomy
Masayuki Tanaka, astronomy
Jiayu Tang, cosmology
Masahito Yamazaki (till August 2010), string theory
Marcos Valdes (JSPS Fellow) (till November 2010),
astrophysics
Mircea Voineagu, mathematics
Kai Wang, particle theory

Yuuko Enomoto (Director’s office),
Tomoko Shiga, Rika Yamada, Kotoe Kawajiri

Library

Kayoko Kubota

General Affairs

Masato Minami, Rieko Tamura, Mika Miura, Kazuko Oomoto

Computing and Website

Hideki Tanaka (Project Assistant Professor), Aya Tsuboi

Accounting

Yonetaka Takano, Naoko Ishida, Nao Kubo, Hiromi Yoshida

Documentation

Kazuo Abe

Purchasing

Noboru Abe, Hiroyuki Ezawa, Yoshiya Ootaka,
Satomi Utsumi

Kamioka Satellite Office

Hiroyuki Kanda, Sumiko Higashi, Motoichi Kanazawa,
Yoko Shimizu

Long-term Visitors (more than 1 month)

C. S. Kim (Yonsei U), particle theory
Alexey Bondal (U Aberdeen), mathematics
Sanjoy Biswas (Harish-Chandra Inst), particle theory
Eiichiro Komatsu (U Texas), cosmology
Devendra Kumar Sahu (IIAP), astronomy
Serguey Petcov (SISSA), particle theory
Luc Dessart (QAMP), astronomy
Massimo Porrati (NYU), cosmology
James Kenneth Sully (UCSB), mathematics
Tatsuma Nishioka (Princeton U), particle theory
Christoph Weniger (Max Plack), astroparticle physics
Jonas Schmidt (DESY), particle theory
Kentaro Nagamine (U Nevada), astrophysics
Ting-Wen Lan (ASIAA), astronomy
Chang Soon Park (Caltech), string theory
Zoltan Kunszt (ETH), particle theory
Edwin L Turner (Princeton U), astrophysics
Raphael Flauger U Texas), cosmology
Alexander Kusenko (UCLA), particle theory

IPMU research staff (October 2010)

IPMU Annual Report 201013

Alternative Gravity Theories
Einstein’s theory of relativity unifies a 3-dimensional
space and a 1-dimensional time as a spacetime anddescribes gravity as a fabric of curved spacetime.
This picture has been very successful in explaining
and predicting many gravitational phenomena. Experimentally, however, we do not know how gravity
behaves at distances shorter than 0.01 mm. At shorter
distances, gravity may behave completely differently from what we expect. For example there may
be hidden dimensions at short distances. In fact, many theories, including superstring theories and M-theory,
require the existence of such extra dimensions. Extra dimensions may exist everywhere in our universe, butthey are somehow hidden from us. One possibility recently investigated very actively is called the braneworld scenario. In this scenario our universe is supposed to be a 3-dimensional surface, called brane, floatingin higher-dimensional space. Although we cannot see extra-dimensions directly, we may hope to detect someindirect evidence of extra-dimensions in high-energy experiments or cosmological observations.
Gravity at very long distances (for example, billions of light-years) may also be as weird as at short distances.
Precision observational data recently revealed that the expansion of our universe is accelerating. If Einstein’s
theory is correct, this requires that more than 70% of our universe is filled with invisible, negative pressure,energy. This energy is named dark energy, but we do not know what it really is. This situation reminds us ofa story in the 19th century: when the perihelion shift of Mercury was discovered, some people hypothesized
the existence of an invisible planet called Vulcan, a so-to-speak dark planet, to explain the anomalous behavior of Mercury. However, as we all know, the dark planet was not real and the correct explanation was tochange gravity, from Newton’s theory to Einstein’s. With this in mind, we wonder if we can change Einstein’s
theory at long distances to address the mystery of dark energy.

Alternative Gravity Theories Group
MemberMain Interest

Cosimo Bambi

General Relativity is our current and successful theory of gravity, but it has been tested
essentially only in the perturbative and weak field limit. The challenge is to figure out if
its predictions are still reliable in other contexts, such as the description of the universeor black hole physics.

IPMU collider phenomenology group members
pursue a broad range of research in testing physics of the standard model and beyond standard
model at the colliders, especially the CERN Large
Hadron Collider (LHC). With the LHC turn-on
in 2009, we have great opportunities in exploring
physics at the TeV scale. This machine enable us
to systematically investigate electroweak symmetry breaking, to probe new physics like low energy
supersymmetry, extra dimensions or other unexpected exotics. Researchers in the group are working on the theoretical tools to investigate these
exciting physics. We also seek the connection between collider physics and dark matter/cosmic ray
physics.

Collider Phenomenology Group
MemberMain Interest

Chuan-Ren Chen

Collider phenomenology of the Standard Model (SM) and Models Beyond the Standard
Model (BSM).

Won Sang Cho

New physics search/discrimination, mass/spin measurements of new particles, and CP
violation at the LHC.

Motoi Endo

Supersymmetric models, including collider phenomenology and particle cosmology.

Koichi Hamaguchi

BSM, in particular, SUSY models, their LHC phenomenology and application tocosmology (baryogenesis, BBN constraints, dark matter and its signatures).

Junji Hisano

Flavor physics and collider physics of BSM.

William Klemm

How to discover BSM and distinguish from one another at collider. Determination of
spins of new particles.

Sourav Mandal

Models beyond the Standard Model, and their signatures in astrophysics, cosmic rays
and colliders.

Shigeki Matsumoto

Collider signals of New Physics models at the TeV scale (SUSY, Little Higgs, Extradimensions, Gauge-Higgs Unification) at the LHC and ILC.

Hitoshi Murayama

Determination of spin and mass of BSM particles.

Mihoko Nojiri

New physics searches and measurements at LHC

Seong Chan Park

Search for BSM, in particular, extra dimensions and black holes at the LHC. Searchfor golden channel for finding black holes at the LHC. Monte Carlo event generator for
black hole events (Black- Max).

Damien Easson

Alternatives to dark energy to explain the acceleration of the Universe. Constraining
gravitational models using observational data and theoretical considerations.

Shinji Mukohyam

Brane world scenarios and the Higgs phase of gravity.

Seong Chan Park

Study of various approaches.

Naoshi Sugiyama

Testing alternative gravity theories using observational data.

Serguey Petcov

Tests of models of neutrino mass generation at colliders.

Atsushi Taruya

Modeling and testing structure formation scenario in modified theories of gravity fromlarge-scale structure data.

Jing Shu

Physics of top, Z’, and higgs.

Kohsaku Tobioka

Discovery of BSM and mass measurements of new particles at theLHC.

Kai Wang

Search for BSM and test of SM at the LHC.

Tsutomu Yanagida

Finding theories beyond the standard model.Theories for strongly interacting
gauge mediation and possible explanations on the anomalies observed in PAMELA
experiments of cosmic rays.

Jun’ichi Yokoyama

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Collider Phenomenology

Research Program

5 Research Program

IPMU Annual Report 2010

Model building and constraints on dark energy.

IPMU Annual Report 201015

Cosmology and Statistics
The size of data set in cosmological observations ishuge. For example, the Sloan Digital Sky Survey-III(SDSS-III) creates a color image of more than a trillion pixels. That is so big and detailed that one would
need 500,000 high-definition TVs to view it at its full
resolution. This trend will continue at even faster rates
as larger telescopes become available in near future.
For handling these massive data set and extracting
maximum amount of information, we must keep
developing more and more sophisticated statisticalmethods. Relevant issues that are actively pursued are
selecting models, methods of estimating parameters,
Bayes’ theorem and other statistical techniques.

MemberMain Interest

Karsten Heeger

Direct dark matter searches in low-energy experiments.

Jing Liu

Direct Dark Matter search using the XMASS detector.

Kai Martens

Identification of particle candidates for Dark Matter. Super low background experiments.

Shigetaka Moriyama

Direct detection of Dark Matter.

Masayuki Nakahata

Purification of Xenon for low background experiments.

Yoichiro Suzuki

Discovery of Dark Matter.

Yasuo Takeuchi

Dark Matter search at XMASS.

Detector Developments

In the study of gravitational lensing which is actively
carried out at IPMU, as an example, we try to extract
tiny distortion of the observed image of a galaxy from its true shape. We do so by modeling the galaxy shapein a mathematically rigorous manner and convolving the sampling effects and noise in the observation. This
type of data analysis requires close collaboration between cosmologists and statisticians.

Experimental physics and observational astronomy rely on cutting-edge technologies to build detectors thatpush the frontier of knowledge with the data they deliver. Data is the lifeblood of science, as the scientificmethod demands that every insight be tested against the hard evidence of experimental data. The art of experimentation is to provide both reliable and pertinent data to test the theories that the disciplined use ofknowledge and imagination conjure from the massive body of scientific data already accumulated.

Dark Matter Experiment

Active detector development provides the means to extend the reach of current and future experiments—andvery possibly new technology that may well find its way back into your living room or workshop. It is a vital
ingredient in our quest to understand the Universe. The projects below are as diverse as the problems encountered and the individuals working on them.

We know that about 23% of the total energy
and matter of the Universe is dark matter, but
we do not know what that is made of. The aimof the dark matter search experiment, XMASS,
is to directly observe interactions of the cold
dark matter in the large detector placed underground and to reveal the character of dark
matter—its interactions, mass and so on.

EGADS Project (Evaluating Gadolinium’s Action on Detector Systems), which is now under construction in the
Kamioka mine, will be used to establish the viability ofgadoliniumenhanced water Cherenkov detector for detecting supernova relic neutrinos.

We use 1 ton liquid Xenon detector cooled
down at the temperature of -100 degree Celsius
and measure the scintillation light emanatedfrom the interaction of the dark matter in thedetector. The experimental sensitivity is roughly two orders of magnitude better than the currently available best limit.
Excavation of the cavity for housing the detector and construction of the 10-meter-high and 800-ton-weightcylindrical water tank for shielding gamma rays and neutrons from nearby rocks were completed in 2008.
Assembling of major detector-components was completed in 2009. Most part of 2010 was devoted for final
tuning of the detector and data handling system. We are very close to start the data taking.

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IPMU Annual Report 2010

Research Program

Dark Matter Experiment Group

Detector Development Group
MemberMain Interest

Karsten Heeger

Liquids scintillator, water Cherenkov, and bolometric detectors. Ultralow backgrounddetectors and techniques.

Kunio Inoue

Neutrino oscillation, neutrino geophysics, neutrino astrophysics, neutrinoless double
beta decay, and directional measurement of anti-neutrinos.

Kai Martens

Continuous removal of radon from liquid xenon.

Yasuo Takeuchi

Development of high sensitivity radon detectors in air, in water, and in xenon.
Development of impurity measurement systems in xenon.

Mark Vagins

Improving the neutrino response of water Cherenkov detectors.

IPMU Annual Report 201017

The Universe is expanding; the further
away a galaxy is, the faster it is moving,which is known as the Hubble’s law.
This observational fact implies that, if
we go back in time, the Universe wassmall, dense and extremely hot. The
evolution of the early universe is described by the Friedmann-LemaitreRobertson-Walker (FLRW) universe,a homogeneous and isotropic solutionof the Einstein equations of the generalrelativity, and the standard big bang
theory is based on the FLRW universe.
Credit: NASA/WMAP Science TeamThe Hubble’s law, the big bang nucleosynthesis (BBN), the comic microwave background (CMB) radiation provide key support for the standard bigbang theory. Those three observations still remain important probes of the early Universe.
Despite its great success the big bang theory is plagued with serious theoretical issues such as the horizon
problem, the flatness problem, and the monopole problem. Those problems are beautifully solved by the introducing an inflationary expansion at the very early stage of the Universe. What is more important about
inflation is that quantum fluctuations of a scalar field driving the inflation (called an inflaton) generate tiny
density perturbations, which can account for the seed of the structures such as galaxies and clusters of thegalaxies seen in the current Universe. The properties of the density perturbations depend on the inflation
models, which can be probed by studying tiny inhomogeneities in the CMB temperature anisotropy.
The recent progress in observational techniques has enabled us to study the evolution of the early universe
with unprecedented precision, and our understanding of the Universe has significantly increased. Nevertheless it is not fully known how the inflation occurred, how the universe was reheated after inflation, how thedark matter as well as the baryon asymmetry were created, whether there is large non-Gaussianity in thedensity perturbations or not, and so on. We would like to tackle those questions in order to reveal how theuniverse evolved from the inflationary epoch into what it looks like at present.

Inflation and Early Universe Group
MemberMain Interest

Cosimo Bambi

General Relativity is our current and successful theory of gravity, but it has been tested
essentially only in the perturbative and weak field limit. The challenge is to figure out if
its predictions are still reliable in other contexts, such as the description of the universeor black hole physics.

Damien Easson

Building concrete models of infation from string theory. Observable predictions of
nonstandard infationary theories.

Motoi Endo

Supersymmetric models, including collider phenomenology and particle cosmology.

Emir Gumrukcuoglu

Models of inflation that give rise to new signatures, such as nongaussianity and/or
broken statistical isotropy. The effect of supersymetric flat directions on the time scaleof thermalization. Gravitational waves from cosmological sources, in particular, from thepreheating of flat directions.

Koichi Hamaguchi

BSM, in particular, SUSY models, their LHC phenomenology and application to

Research Program

Inflation and Early Universe

cosmology (baryogenesis, BBN constraints, dark matter and its signatures).
Minxin Huang

Non-Gaussianities in the Cosmic Microwave Background from inflation models.

Ken’ichi Izawa

Gauge/gravity-mediated supersymmetry breaking, supersymmetric inflation, unitedmodels.

Takeshi Kobayashi

Cosmology of the early universe through string theory.

Alexander Kusenko

Dark matter, baryogenesis, phase transitions.

Shinji Mukohyama

Inflation and brane cosmology.

Hitoshi Murayama

Leptogenesis. Models of inflation.

Seong Chan Park

Two different types of infation models, the orbifold GUT inflation and the theory withf (φ)R term, so called the nonminimal coupling term. The (p) reheating of the inflation
theory with the nonminimal coupling term.

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IPMU Annual Report 2010

Serguey Petcov

Leptogenesis. Low energy leptonic CP violation and leptogenesis.

Naoshi Sugiyama

Setting constraints on the inflation models and early universe phenomena such as bigbang nucleosynthesis by using observational data.

Fuminobu Takahashi

Mechanism of inflation and subsequent reheating processes. Origin of density
perturbations and non-Gaussianity. Baryogenesis. Big Bang nucleosynthesis.

Atsushi Taruya

Probing the early epoch of the Universe through direct and indirect measurementsof the stochastic background of gravitational waves via laser interferometers or
observations of CMB anisotropies.

Tsutomu Yanagida

Finding theories beyond the standard model.Theories for strongly interacting
gauge mediation and possible explanations on the anomalies observed in PAMELA
experiments of cosmic rays.

Jun’ichi Yokoyama

Inflation models. Generation of fluctuations. Stochastic inflation.

IPMU Annual Report 201019

In the 17th century, Newton found differential and integral calculus, giving alanguage and method to describe the lawof dynamics in nature. This is a good
example of mathematics providing thescientific community, and sometimes society in general, with a common language
and method to describe phenomena intheir study. This in turn helps to establish
a mathematician’s original concepts. Particularly in recent years the interaction
between mathematics and physics has
been in full flow.
Gauge theory, quantum field theory, general relativity, superstring theory and thetheory of integrable systems in physics
have provided major influences in thedevelopment of mathematics such as algebraic geometry, differential geometry,
topology, representation theory, algebraic
analysis and number theory. A large scale
development has been newly emerging.
This close collaboration between mathematics and physics is particularly important for advancing the study of theconcept of space and universe that havebeen developed by scientists such as Kepler, Newton, Gauss, Riemann, Maxwell,
Einstein and many others.
For the past twenty years, methods of quantum field theory have had a major influence on mathematics. Since
quantum field theory treats the differential and integral calculus of an infinite number of degrees of freedom,
the rigorous development of quantum field theory in mathematics has yet to be established. Nevertheless, inthese twenty years, a lot of concepts arising from quantum field theory such as quantum groups have had amajor influence on modern mathematics and physics.
Mathematicians at IPMU are working to develop modern mathematics by closely working with physicists.
The following are the fields of mathematics studied at IPMU. We divided the fields into geometry and algebra.

Geometry:
Geometric objects we study in mathematics include several kinds of spaces, such as topological spaces, differentiable manifolds, symplectic manifolds, complex manifolds and algebraic varieties. Recently these various branches of geometries are deeply connected and influence each other. For instance, mirror symmetry isa conjectural duality between symplectic manifolds and algebraic varieties, which was found by the duality
between different types of string theories. One of the research focus of our geometry group is to invent andinvestigate the mathematical notions which describe the mirror symmetry, and give some applications to thegeometric problems we are interested in.
In the theory of mirror symmetry, a Calabi-Yau 3-fold plays an important role. A Calabi-Yau 3-fold is a complex manifold of real dimension 6 with a Ricci flat metric. In string theory, the spacetime is expected to be
10-dimensional, and the extra 6-dimensional space is expected to take the form of a Calabi-Yau 3-fold. On a

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IPMU Annual Report 2010

Calabi-Yau 3-fold, we can define the quantum invariant counting Riemann surfaces on it, called Gromov-Witten (GW) invariant. One of the ways to describe the mirror symmetry is to establish the relationship between
GW-invariants and the period map on the mirror manifold. In our group, S. Galkin studies GW-invariant, K.
Saito studies the period map, and they develop these theories.
Another way to describe the mirror symmetry is to use the homological algebra proposed by M. Kontsevich.
It is stated as an equivalence of triangulated categories between derived category of coherent sheaves andderived Fukaya category on the mirror manifold. In our group, A. Bondal develops the theory of triangulated
categories, and describes the structure of several triangulated categories, e.g. to show the existence of the exceptional collections. The development of this theory is relevant in understanding the mirror symmetry.
On a Calabi-Yau 3-fold, we can define another quantum invariant, called Donaldson-Thomas (DT) invariant. It counts D-branes in terms of string theory, and is expected to be equivalent to the GW-invariant. (GW/
DT correspondence). The DT-theory depends on a choice of a stability condition on the derived category,
and the set of stability conditions form a complex manifold, which is expected to be a stringy Kahler moduli
space. Understanding DT-invariants and the structure of the space of stability conditions is important in connection with string theory, and Y. Toda studies these theories. Also the theory of quantum invariants of low
dimensional manifolds has begun with the study of quantum theory such as integrable systems, soliton equations and the conformal field theory. These quantum invariants turn out to have a deep connection with GWtheory, and T. Kohno studies these invariants.

Research Program

Mathematics

Algebra:Algebra is a collection of branches of mathematics, which studies the system of numbers such as integers
and polynomials. Some examples of the branches are set theory, group theory, (commutative) ring theory,(algebraic) number theory, category theory, algebraic geometry, combinatorics and representation theory. Of
course, each branch may not be fully contained in algebra, and may lie in between geometry.
Algebra studied at IPMU includes homological algebra and category theory. Homological algebra began as astudy of homology groups of topological spaces. K-theory is an example of cohomology theories. Recall thatin connection with string theory, an interesting and basic example is that an element of a K-group of a certain
topological space has a physical interpretation. This enables us to use the powerful machinery of homologicalalgebra to the study of string theory.
Nowadays, a basic algebraic invariant associated with a geometric object is a triangulated category. For
example, this appears from an algebraic variety as the derived category of coherent sheaves. The notion oftriangulated category is so abstract that they appear everywhere in mathematics. We know that some noncommutative geometry is better described in this language. Recent research is focused on finding a more
complicated structure than that of a triangulated category. Differential graded categories and model categories are examples of objects that are equipped with more structure than a triangulated category. We seek toreveal the algebraic structure common to various phenomena (which may or may not look unrelated) occurring in mathematics and physics.
Another basic example of an algebraic structure is a group or a group action. A group describes the symmetry of things. Groups are everywhere in mathematics from Galois groups in number theory to mappingclass groups in topology. Study of groups, or representation theory, will then lead to the explanation of thephenomena caused by the symmetry. Let us give a list of those groups (or algebras) our researchers are interested in, just to give an idea on how diverse we are. The groups (or algebras) that appear are vertex operator
algebras, Lie groups (algebras), braid groups, Galois groups, and mapping class groups. We refer to the tablebelow of group members for more information on how each deals with the group in his research.
We certainly hope to go the other direction. An example question would be if the product structure in Ktheory has an interpretation. We can ask if it has a physical interpretation. The “distance” of algebra fromphysics, compared with geometry, is greater, in the sense that many of the problems in physics are first statedusing (quantum) field theory. While geometry is used to describe the universe rather directly as if taking a
picture, algebra tends to seek for the exact laws behind the phenomena.

IPMU Annual Report 201021

Mathematics Group (Algebra)

MemberMain Interest

MemberMain Interest

Tomoyuki Abe

Arithmetic geometry by using the p-adic analysis especially arithmetic D-modules, andits application to the Langlands program for function field in the p-adic setting.

Scott Carnahan

Vertex algebras, infinite dimensional Lie algebras, automorphic forms, moonshine.

Sergey Galkin

Arithmetics of Landau-Ginzburg models, cluster categories, derived categories.

Scott Carnahan

Moduli problems, logarithmic geometry, formal geometry, geometric representation
theory.

Satoshi Kondo

Arithmetic geometry. Use of tools from algebraic geometry to study problems in number
theory.

Kwokwai Chan

Mirror symmetry for Calabi-Yau and toric manifolds, the SYZ conjecture and its
applications to mirror symmetry, open Gromov-Witten theory.

Mikael Pichot

Bruhat-Tits buildings. Group theory and group algebras. K-theory, the Baum–Connes
conjecture and the property of rapid decay. Noncommutative geometry.

Sergey Galkin

Fano varieties, their classification, degenerations, Gromov-Witten invariants, mirror dual
Landau-Ginzburg models.

Kyoji Saito

Alexander Getmanenko

Comlpex analytic methods for differential equations, with an application towards Witten
Morse theory and the Fukaya category.

Construction of primitive forms and associated period maps by use of infinite
dimensional Lie algebras (e.g. elliptic algebras and cuspidal algebras) and theirrepresentation theory. Partition functions of Ising models on (non-commutative) discretegroups and monoids.

Kentaro Hori

Mirror symmetry as a bridge between symplectic geometry and complex geometry, real
algebraic geometry, homological algebra, and their application to string theory.

Toshiyuki Kobayashi

Shinobu Hosono

Mirror symmetry of Calabi-Yau manifolds, and its applications to Gromov-Witten theory.

Toshiyuki Kobayashi

Discontinous groups for homogeneous manifolds preserving indefinite-Riemannian
structure, rigidity and deformation of discontinuous groups, and spectrum on locallyindefinite-Riemannian symmetric spaces. Synthetic and systemetic study of multiplicityfree representations by the original idea of ”visible actions” on complex manifods.

1. Discretely decomposable branching laws of the restriction of infinite dimensional
representations of reductive groups, and its application to modular varieties.
2. Minimal representations are buiding blocks of unitary representations. Focus on
geometric analysis on minimal representations, in particular, construction of generalized
Fourier transforms.

Hirosi Ooguri

Conformal field theories in diverse dimensions that are relevant to dynamics of stringsand branes in superstring theory. Application of conformal field theory techniques tostudy the landscape of string vacua.

Domenico Orlando

Spin chains (XXZ model and related two-dimensional lattices) in connection to dimer
models and topological strings.

Susanne Reffert(Quantum) dimer models. (Quantum) crystal melting and spin chains.

Yoshihisa Saito

Representation theory of infinite dimensional Lie algebras and quantum groups,
especially in geometric approach to these subjects. Study of the area around thesesubjects, for example, integrable systems, combinatrics, finite dimensional algebras,
algebraic groups, Hecke algebras and D-modules.

Kenneth Shackleton

Geometric group theory. Hyperbolic and relatively hyperbolic groups. Low-dimensional
topology. Teichmüller theory and mapping class groups. Curve complexes, pants
complexes.

Akihiro Tsuchiya

Conformal Feld theory based on representation theory of inFnite dimensional algebra
and the theory of D-modules.

Simon Wood

Understanding the representation theory of vertex operator algebras in the context ofconformal field theory.

Mircea Voineagu

Motivic and Morphic Cohomology. K-theory of algebraic varieties. Semi-topological
K-theory.

Toshitake Kohno

Construction of topological invariants for braids, knots and 3 dimensional manifold
based on quantum groups and conformal field theory. Algebraic structures of thehomology of the loop spaces of configuration spaces.

Todor Milanov

Gromov–Witten theory, singularity theory, and representations of infinite-dimesnional
Lie algebras.

Hirosi Ooguri

Application of new mathematical techniques emerging at the interface of string theory
and geometry to solve mysteries of quantum gravity.

Susanne Reffert

Calabi-Yau geometries in the framework of String compactifications.

Kyoji Saito

Construction of primitive forms and associated period maps by use of infinite
dimensional Lie algebras (e.g. elliptic algebras and cuspidal algebras) and theirrepresentation theory. Partition functions of Ising models on (non-commutative) discretegroups and monoids.

Yoshihisa Saito

22

Representation theory of infinite dimensional Lie algebras and quantum groups,
especially in geometric approach to these subjects. Areas around these subjects suchas integrable systems, combinatrics, finite dimensional algebras, algebraic groups,
Hecke algebras and D-modules.

Kenneth Shackleton

Large-scale geometry of groups (eg. mapping class groups), in the sense of Gromov
combinatorial rigidity in families of groups hyperbolic and relatively hyperbolic groups.

Yuji Tachikawa

String-inspired phenomena in mathematics (hyperkhler manifolds, geometricrepresentation theory etc.).

Yukinobu Toda

Derived categories of coherent sheaves on algebraic varieties and the theory of stability conditions on them. It is motivated by several backgrounds, such as minimal model
theory or homological mirror symmetry. Construction of generalized Donaldson-Thomas
type invariants, counting semistable objects in the derived category.

Mikael Pichot

Nonpositively curved geometry and geometric group theory (especially CAT(0) andhyperbolic). Foliation theory and topological dynamical systems.

Akihiro Tsuchiya

Conformal field theory based on representation theory of infinite dimensional algebra
and the theory of D-modules.

IPMU Annual Report 2010

IPMU Annual Report 2010

Research Program

Mathematics Group (Geometry)23

Models beyond the Standard Model
neutrino mass
Small Parameters of the SM

Initial Cond. of Big Bang Univ.
axion

flavor structure

supersymmetry
extra dimension
pseudo NG Higgs

deviation from the SM
prediction
in experimental data

inflaton, curvaton
dark energy, dark mattercosmic ray flux

The thermal history of early universe is described very well by the Standard Model at least back to the erawith the temperature of order MeV, but it is only with several input parameter values of initial condition of
the universe. Those initial condition parameters include baryon asymmetry, normalization of density contrast
and the amount of dark energy. How are these initial condition parameters set? Once again, it is impossible tothink about such problems without a model that extends the Standard Model.

Naturalness of EW / Planck
Electroweak Symmetry Breaking
Standard Model

Research Program

Up to now, we have seen that a quantum
field theory with quarks, leptons and vectorbosons for three different forces describes
reasonably well all the experimental data
available so far. Among the vector bosons,however, those corresponding to the weakforce (which is responsible for theβ-decayof nucleons) are known to have masses.
There are three such vector bosons, andthey are called W +, W − and Z bosons, or
weak bosons, as a whole. From the consistency of quantum field theories, it is known
that something must be behind the nonzero
masses of these vector bosons. It has notbeen confirmed experimentally yet how
these masses are generated.

We also address the following problems. The Standard Model is described by a quantum field theory with
about 30 parameters, and the values of these parameters can be determined only by measuring them experimentally. Would it be possible to determine them theoretically, by considering theoretical frameworks that
contain the Standard Model?

technicolor

For non-experts

What is called the Standard Model provides a simple theoretical idea how the weak bosons acquire masses.
According to the Standard Model, the masses originate from condensation of quanta of a new scalar boson,
called Higgs boson. The Higgs boson is the last missing piece of the Standard Model, and will be discovered
in experiments in near future, if the weak bosons have masses through the mechanism predicted by the Standard Model.

After kB, c and ℏ are set to unity, [length] = [energy] −1 is the only dimension left in physics. The
fundamental law of physics in nature has been probed down to the length scale of order 10 −3 fm =10 −8 Å, which is equivalent to the energy scale of order 102 GeV = 1011 eV. Nothing is known forsure yet, however, what is happening at even shorter distance scales.

Is that the end of the story? Maybe ..., but maybe not. Let us think about the following questions.
• The Higgs boson is the only scalar field in the Standard Model; all other dynamical degrees of freedom 		in the Standard Model are either fermions or vector fields. Why does the Standard Model have one scalar
field, and just one? Why does its condensation develop?

√• The Newton constant GN≃ 6.7×10 −11m3 kg/s2 corresponds to an energy scale 1/ GN ℏ /c3 〜 1019 GeV. 		
Why is there a huge hierarchy of order 1017 between this energy scale and the weak boson masses of 		
order 102 GeV, and how can the weak boson masses remain so small under quantum corrections?
In order to solve these questions theoretically, various models beyond the Standard Model have been constructed so far, and we still continue to do so in quest of a better solution to these problems. Once we haveconcrete models, we can examine whether such models are really consistent with all the available experimental data, predict what kind of signals can be expected in future experiments, and even propose experiments toconfirm such models.
The origin of the masses of the weak bosons is not the only puzzle of the Standard Model. It is known thathuge fraction of the universe consists of dark matter and dark energy. It is very unlikely that dark matter isactually the ordinary matter particles in the Standard Model.
This is where we find another motivation to extend the Standard Model. Our universe may have become solarge because of an inflationary process in the early universe, and quantum fluctuations of a scalar field may
become the fluctuations of density in the early universe, which eventually become galaxies and clusters ofgalaxies. So, here is another motivation to introduce a new degree of freedom and extend the Standard Model. Such cosmological issues as inflation, primordial density perturbations and dark matter motivate extensions of the Standard Model, and models in quantum field theories are the appropriate framework in order towork on these issues.
Recent reports of excess in high-energy cosmic ray fluxes, deviation from the Standard-Model prediction of
the anomalous magnetic moment of muon, and some other reports of deviations from the Standard Model
predictions may also be indications of some physics beyond the Standard Model. We therefore seek for theoretical models that account for these phenomena.

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26

MemberMain Interest

Chuan-Ren Chen

Collider phenomenology of the Standard Model and models beyond the Standard
Model, including SUSY and Little Higgs models. Interplay between the LHC phenomenology and cosmology.

Won Sang Cho

Supersymmetry/Extra Dimension models, and their collider and dark matter phenomenology.

Damien Easson

Physics beyond the Standard Model to explain the origin of the dark components of the
Universe.

Motoi Endo

Supersymmetric models including collider phenomenology and particle cosmology.

Brian Feldstein

Lately my work has focussed primarily on properties of dark matter, and possible signatures in direct detection or other types of experiments. I am also interested in cosmology, weak scale physics, etc.

Koichi Hamaguchi

SUSY models and their LHC phenomenology and application to cosmology (baryogenesis, BBN constraints, dark matter and its signatures).

Junji HisanoSupersymmetric models. Search for clues in accelerator and non-accelerator physics.
Construction of realistic models at TeV and at GUT scales.

Ken’ichi Izawa

Gauge/gravity-mediated supersymmetry breaking. Supersymmetric inflation. Unitedmodels.

William Klemm

Signatures from various beyond the standard models. Distinguishing from one anotherat a collider. Determination of spins of new particles.

Sourav Mandal

Models beyond the Standard Model, and their signatures in astrophysics, cosmic rays
and colliders.

Shigeki Matsumoto

New Physics models at the TeV scale (SUSY, Little Higgs, Extradimensions, GaugeHiggs Unification).

Hitoshi Murayama

Supersymmetry breaking models and phenomenology.

Hirosi Ooguri

General constraints on low energy effective theories that arise from superstring theory
or any other consistent theory of quantum gravity. Supersymmetry breaking mechanisms in gauge theories and superstring theory.

Yutaka Ookouchi

Model building with supersymmetric gauge theories. Application of gauge/gravity duality
to problems in particle physics.

Seong Chan Park

Various ideas of the BSM: warped extra dimension, model of EWSB in the context ofGauge-Higgs unification, orbifold GUT, little Higgs etc.

Serguey Petcov

Models of neutrino masses and mixing. Phenomenology of lepton flavour violation.

Jing Shu

Warped extra dimension models. Strongly coupled theory.

Matt Sudano

Dynamical supersymmetry breaking and its mediation.

Fuminobu Takahashi

Supersymmetry. Link between supersymmetric models and cosmology, such as SUSY
breaking, dark matter, and SUSY inflation models.

Kohsaku Tobioka

LHC Phenomenology of supersymmetry and extra dimensions.

Kai Wang

Model building of BSM physics, in particular SUSY models as well as
neutrino models. Their collider tests at the CERN LHC.

Taizan Watari

Model building and phenomenology beyond the Standard Model in general. SUSY
breaking and mediation, flavor pattern, GUT, inflation, Peccei-Quinn axion, quintessence, landscapes.

Tsutomu Yanagida

PAMELA and ATIC data searching for a convincing model that explains the observed
anomalies.

IPMU Annual Report 2010

Neutrino Physics
What are the building blocks of nature? Most
people have heard of electrons, which are indeed (as far as we can tell) fundamental particles, as well as protons and neutrons, which
are themselves composite objects composedof much smaller fundamental particles called
quarks. But there are much more unusual fundamental particles, too, and perhaps the mostmysterious of these are the neutrinos.
The Standard Model of particle physics contains three generations of fundamental particles. In each of these generations, or families,
there are two quarks and two much less massive particles called leptons. In the first family one such lepton is the electron, which carries an electric charge, and the other first-generation lepton iscalled the electron neutrino, which is electrically neutral. The second generation contains two more types ofquarks, a charged lepton called the muon, and the muon neutrino, while the third family contains a final pairof quarks, a charged lepton called the tau, and a tau neutrino.

Research Program

Models Beyond the Standard Model Group

The three types of neutrinos, the electron neutrino, the muon neutrino, and the tau neutrino, are exceedingly
challenging to study, because they hardly interact with matter at all. That means neutrino detectors need tobe very big, very sensitive, or both. At IPMU we have teams of researchers working on some of the best andmost famous neutrino detectors in the world.
The Super-Kamiokande [Super-K] detector is a 50,000 ton tank of water buried deep under the JapaneseAlps. By studying neutrinos generated by cosmic ray interactions in the Earth’s atmosphere, in 1998 SuperK made the stunning discovery that different types of neutrinos can spontaneously transform from one typeto another, a process known as neutrino oscillation. This also implied that at least two of the three neutrinos
have a small, but non-zero mass, something not predicted by the Standard Model. This was the first timesince its inception that the Standard Model needed to be revised based on solid experimental data. In 2001
Super-K made a crucial contribution to the solution of the solar neutrino problem by indicating that solar
neutrinos produced by the Boron-8 reaction in the Sun could change their flavor while in flight, and uniquely
selected the large mixing angle solution to the problem. IPMU members are now working on GADZOOKS!,
an initiative to enrich the ultrapure water inside Super-Kamiokande with the element gadolinium. This will
greatly reduce backgrounds and, among many other physics benefits, should allow the first-ever detection ofa constant stream of neutrinos from distant supernovas.
The KamLAND neutrino detector is located in the same ancient zinc mine as Super-Kamiokande, but instead of water it is filled with 1,000 tons of liquid scintillator. This makes it very sensitive, especially to low
energy neutrinos from nuclear reactors and those generated by radioactive decays within the Earth itself. In
2002 KamLAND was the first experiment to observe disappearance of reactor neutrinos, which matched other experiments’ solar neutrino data in spectacular fashion. After lowering the energy threshold at which theirdata could be analyzed, in 2005 KamLAND was the first experiment to detect geoneutrinos, ushering in an
entirely new way to study the Earth’s interior. Also in 2005, KamLAND saw evidence of spectral distortionsin the reactor neutrino signal; clear proof of neutrino oscillations. IPMU members are currently working on
modifying KamLAND to detect very low energy solar neutrinos produced by the Beryllium-7 reaction in theSun, as well as transforming the KamLAND detector into a huge neutrinoless double beta decay experiment
via the addition of Xenon-136 to the detector volume.
As we continue to understand the mysterious neutrinos, as well as the varied processes which produce themwithin the Earth, upon the Earth, above the Earth, within the Sun, and inside exploding stars, IPMU researchers are using these tiniest of particles to probe the most inaccessible places and farthest reaches of theuniverse itself.

IPMU Annual Report 201027

Member

Main Interest

Karsten Heeger

Neutrino oscillation experiments with reactor neutrinos. Search for neutrinoless double
beta decay.

Glenn Horton-Smith

KamLAND experiment. Neutrino oscillation.

Kunio Inoue

Neutrino oscillation. Neutrino geophysics. Neutrino astrophysics. Neutrinoless double
beta decay. Directional measurement of antineutrinos.

Takaaki Kajita

Atmospheric neutrino. Long baseline experiments. Neutrino oscillations.

Alexander Kusenko

Supernova neutrinos, sterile neutrinos.

Kai Martens

Super-Kamiokande experiment for detecting neutrinos from galactic supernova (type II)
explosion.

Sourav Mandal

Models beyond the Standard Model, and their signatures in astrophysics, cosmic rays
and colliders.

Hitoshi Murayama

Neutrino oscillation phenomenology. KamLAND.

Masayuki Nakahata

Boron-8 solar neutrino measurement by Super-Kamiokande detector. Precise
measurement of the energy spectrum for the confirmation of matter effect of theneutrino oscillation.

Serguey Petcov

All aspects of the physics of massive neutrinos, neutrino mixing and of neutrino
oscillations. The problems of determining, i) the nature (Dirac or Majorana) of massive
neutrinos, and ii) the type of spectrum (with normal or inverted ordering) the neutrino
masses obey. Tests of the “non-standard” mechanisms of neutrinoless double beta
decay. Leptonic (Dirac and/or Majoran) CP violation and its possible manifestations.

Henry W. Sobel

Super-Kamiokande and T2K experiments. Neutrino physics. Supernova. Proton decay.

Yoichiro Suzuki

Experimental study on neutrino oscillations by using extraterrestrial neutrinos and also
by using man-made neutrinos. Double beta decay experiments.

Yasuo Takeuchi

Low-energy neutrino observations in Super-Kamiokande.

Mark Vagins

Measurements of neutrinos and antineutrinos from supernovae, the sun, and nuclear
power reactors. T2K experiment. GADZOOKS experiment.

Observational Cosmology
Understanding the nature and origin oflarge-scale structure in the Universe is
one of most compelling issues in observational cosmology. The currently
most conventional scenario is given by
the cold dark matter (CDM) dominatedmodel, where gravitational instability
mainly driven by spatial inhomogeneitiesof CDM distribution amplifies the seeddensity perturbations to form the present-day hierarchical structures. Therefore revealing distribution and amountof CDM is crucial to understanding theformation of large-scale structure. In addition the presence of dark energy drives
the accelerating cosmic expansion, andtherefore affects the growth of structureformation. The dark matter distribution
and the nature of dark energy can be explored from massive galaxy surveys.

Research Program

Neutrino Physics GroupWe have been actively working bothon the measurements using currently
available telescope facilities and on theplanning of future instruments. The two
powerful investigative tools are the gravitational lensing effect and the baryon
acoustic oscillation.

Gravitational lensing effect:
The path of light ray emitted by a distant galaxy is bent by gravitational force of intervening large-scale
structure during the propagation, causing the image to be distorted—the so-called weak lensing shear. Conversely, measuring the coherent shear signals between galaxy images allows us to reconstruct the distributionof invisible dark matter. Moreover, since the weak lensing shear deals with the light propagation on cosmological distance scales, the lensing strengths depend on the cosmic expansion history that is sensitive to thenature of dark energy. Thus weak lensing based observables offer a powerful way for studying the nature ofinvisible components, dark matter and dark energy. We are carrying out observational and theoretical studies
of weak lensing phenomena using our own Subaru data sets as well as simulations of large-scale structure.

Baryon acoustic oscillation:
To measure properties of dark energy, one needs to measure the expansion history of the universe precisely.
Because light travels at a finite speed, one can measure the expansion rate of the past by looking far. Comparing the expansion rate at varying distances would reveal the expansion history. The expansion itself isrelatively easy to measure. The light emitted by a distant galaxy is stretched by the expansion of space andbecomes redder, which can be measured by any decent spectrograph.
To measure the expansion history, however, we also need to know how far back in time the light was emitted
from the galaxy, or equivalently, how far away it is. Measuring precise distances in cosmological scales isvery challenging. Clustering of baryonic matter at a certain characteristic scale that is imprinted by baryon
acoustic oscillation (BAO), or propagation of acoustic waves, in the early universe serves as a “standard
ruler” for cosmological observations. This technique requires to study millions of galaxies in a wide field ofview, and map the spatial distribution of luminous galaxies to detect the characteristic scale.

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29

The HSC, currently under construction, is the project to replace the prime focus camera of Subaru Telescope(8.2 meter optical-infrared telescope at the summit of 4,200m-Mauna Kea, Hawaii). with a new camera thathas wider field-of-view than the current one by a factor of 10. Fully utilizing the unique capabilities of HSC,
its survey speed and excellent image quality, we are planning and designing a massive galaxy survey thatcovers an area of a few thousands square degrees and reaches to the depth to probe the Universe up to redshifts of a few. In fact these data sets will provide us an ideal data sets for exploring the nature of dark matterand dark energy via measurements of cosmological observables available from the data, weak lensing andgalaxy clustering statistics. We, IPMU members, are actively involved in this HSC project, and working on
the designing and planning of HSC galaxy survey and development of data analysis pipeline.

Sloan Digital Sky Survey III:In January 2011, the SDSS-III collaboration released the largest digital color image of the sky ever made. The
image has been put together over the last decade from millions of 2.8-megapixel images taken at the 2.5-metertelescope at the Apache Point Observatory in New Mexico, thus creating a color image of more than a trillion pixels. This new SDSS-III data release, along with the previous SDSS-I and SDSS-II data releases thatit builds upon, gives astronomers the most comprehensive view of the night sky ever made. SDSS data havealready been used to discover nearly half a billion astronomical objects, including asteroids, stars, galaxies
and distant quasars.
IPMU has been a part of the SDSS-III and involved in the study of these rich images. But our focus has been
to conduct a new survey to a deeper universe with the improved spectrograph. This survey, the Baryon Oscillation Spectroscopic Survey (BOSS), maps the spatial distribution of luminous galaxies and quasars to detect
the characteristic scale imprinted by baryon acoustic oscillations in the early universe. Using the acoustic
scale as a standard ruler, we can infer the angular diameter distance to the galaxy redshift. The BOSS has
started to take data in 2009 and will continue until 2014. Its goal is to precisely measure how Dark Energy
has changed over the recent history of the Universe.

Observational Cosmology Group
MemberMain Interest

Rafael S. de Souza

Statistical analysis, PCA.

Emille Ishida

Supernova cosmology - wide field surveys - Observational strategies.

Issha Kayo

Extraction of cosmological information from the large-scale structure of the Universe,
particularly using the actual data taken by the Sloan Digital Sky Survey and virtual
data generated by N-body simulations. Construction of a homogeneous catalog ofgravitationally lensed quasars to constrain the dark energy.

Tsz Yan Lam

Galaxy surveys to constrain cosmological models. Large-scale structure probes ofprimordial non-Gaussianity.

Yen-Ting Lin

Formation and evolution of galaxies. Roles of galactic mergers and feedback fromsupermassive blackholes on the formation of giant galaxies. Data analysis of BOSS
survey and radio surveys to elucidate the phenomenon of radio-loud active galactic
nuclei. Evolutionary connections between galaxies at z=0 and z=1 using future HSC
data.

Keiichi Maeda

Supernova cosmology, especially in the evaluation of applicability of Type Ia supernovae
as cosmological distance indicators.

Takaya Nozawa

Evolution of dust throughout the cosmic history. Evaluation of the impacts of dust on theobservational cosmology using Type Ia supernovae as a standard candle.

Naoshi Sugiyama

Investigation of the Cosmic Microwave Background. Testing of dark energy models
using observational data such as the baryon acoustic oscillation and gravitational
lensing.

Masahiro Takada

Observational and theoretical studies of gravitational lensing caused by hierarchicalstructures of the universe. Nature of dark side of the universe, dark matter and darkenergy, with the gravitational lensing observables. Future Subaru Weak Lensing Survey.

Masaomi Tanaka

Supernova cosmology. Observations and modelling of nearby Type Ia supernovae tounderstand the origin of their diverse properties.

Masayuki Tanaka

Observational studies of the formation and evolution of galaxies and large-scale
structures using data from the Sloan Digital Sky Survey, Subaru telescope, and Very
Large Telescope.

Atsushi Taruya

Modeling dynamics and statistics of large-scale structure of the Universe, and testing
various cosmological scenarios and/or hypothesis through direct comparison between
theory and observations. A pursuit of the prospects for future observations such as HSC
and BOSS to constrain dark energy, massive neutrinos, primordial non-Gaussianity as
well as to test theory of gravity.

Jun’ichi Yokoyama

Analysis of CMB anisotropy.

Naoki Yoshida

Large galaxy surveys and weak lensing observations. Computer simulations togenerate a large number of mock catalogues for future observational programs.

PrimeFocusSpectrograph (PFS):The PFS project that mounts a next generation spectrograph on the Subaru telescope and is planned to startdata taking later this decade was overwelmingly endorsed at the Subaru Users meeting of January 2011. Using a wide angle view of Subaru telescope and the PFS, we can study several thousand galaxies at the sametime and use the baryon acoustic oscillation technique.
In addition to BAO, there are a number of other measurements to constrain the properties of dark energy using this instrument. Furthermore, this type of spectrograph with a large field of view and a massive multiobject capability will be unique among the largest telescopes in the world, allowing for unprecedented studies of formation and evolution of galaxies, as well as the assembly history of our own Milky Way Galaxy.
The strength of this project comes from exploiting the data using HyperSuprimeCam (HSC), a 3-tonne
digital camera with 900 million pixels, slated for the first light later this year. The combination of imaging
using HSC and spectroscopy using PFS on Subaru is dubbed SuMIRe, Subaru Measurement of Images andRedshifts. The SuMIRe project is expected to repeat and exceed the tremendous success of Sloan Digital Sky
Survey (SDSS), but with a much deeper view of the Universe back to the era that formed early stars and supermassive black holes.

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IPMU Annual Report 2010

Research Program

Hyper Suprime Camera (HSC):

IPMU Annual Report 201031

Particle Astrophysics

Ultra-high-energy cosmic rays

High-energy phenomena naturally occurring in the universe provide a wealth ofdata and new valuable insights into particle
physics and cosmology. IPMU researchers
use the universe as a laboratory for testing
new theories of dark matter and new physics beyond the Standard Model, and forunderstanding the basic properties of theuniverse. In the past year, several exciting
developments in particle astrophysics were
initiated by IPMU members.

Very high energy gamma-raysIts existence is supported by a substantial body of astrophysical evidence, but the identity of the dark matterparticle (or particles) remains a mystery. Since one does not know the interactions of dark matter particles,
besides their gravitational interactions, one must pursue a broad range of possibilities. IPMU researchers
have studied several well-motivated possibilities, such as number-theory dark matter, gravitino in supersymmetric theories, axions, sterile neutrinos, asymmetric, decaying, and universally leptophilic dark matter.
Number-theory dark matter is an elegant and novel possibility proposed by Nakayama, Takahashi, andYanagida. The stability of such dark-matter particles is due to a new symmetry, which is related to basic
number theory and the Fermat theorem. (It is fitting that such a theory has emerged from an institute that has“physics and mathematics” ingrained in its name and in its mission.)

The VHEG from bright distant sources, such as supermassive black holes that accrete stellar matter and accelerate particles in gigantic jets, allow one to study both the most powerful objects in the universe and theproperties of medium along the line of sight, such as the density of starlight photons and the intergalacticmagnetic fields. Kusenko and collaborators have found a link between the observed gamma-ray signals fromsupermassive black holes and the cosmic rays produced in their jets. The surprising connection explains theobserved spectra of the brightest gamma-ray sources in the universe, proves that cosmic rays are accelerated in active galactic nuclei, and sheds new light on cosmic backgrounds and magnetic fields. In particular, observational evidence points to the existence of universal magnetic fields of femtogauss (10 −15 Gauss)
strengths. Such fields may have astrophysical or primordial origin, and may permeate deep space since long
before the stars and galaxies have formed.

Research Program

Dark Matter

The UHECR presents a number of puzzles and scientific opportunities. Martens has spearheaded the experimental efforts at IPMU related to the Telescope Array experiment. On the theoretical side, Kusenko and collaborators have proposed that a non-negligible fraction of ultrahigh-energy nuclei in some energy range may
come from past gamma-ray bursts and other unusual stellar explosions in our own Milky Way galaxy, thus
explaining some recent data from Pierre Auger Observatory. While the protons leave the galaxy promptly, thenuclei get entangled in the web of galactic magnetic fields and bombard Earth over millions of years after thestellar explosion that produced them. This is first evidence of natural nuclear accelerators, such as gammaray bursts, in the past of our own galaxy.

Matsumoto and collaborators have studied several dark matter candidates and their implications for cosmicray observations.
Kawasaki and collaborators have investigated cosmological aspects of inflation in supersymmetric axion
models, as well as some general cosmological constraints on dark matter with velocity-dependent annihilation rates.
It is intriguing that the dark-matter particle can emerge from the neutrino sector in a natural and minimalistic
fashion. Indeed, right-handed or sterile neutrinos are believed to exist at some scale, hence explaining the observed neutrino masses via the seesaw mechanism. If one of these additional fields appears to be light, as canhappen in models with extra dimensions, the corresponding particle can account for cosmological dark matter. A simple model proposed by Kusenko, Takahashi, and Yanagida illustrates this possibility and motivatesthe search for sterile neutrinos. Loewenstein and Kusenko have began the first dedicated search for dark matter using three X-ray telescopes in space: Chandra, XMM-Newton, and Suzaku. The first published results
include new limits on sterile dark matter, as well as a tantalizing feature in the Chandra data that may be
the first hint of discovery. The search continues with scheduled new observations of dark-matter dominateddwarf spheroidal galaxies.

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IPMU Annual Report 2010

IPMU Annual Report 201033

Member

Main Interest

Cosimo Bambi

General Relativity is our current and successful theory of gravity, but it has been tested
essentially only in the perturbative and weak field limit. The challenge is to figure out if
its predictions are still reliable in other contexts, such as the description of the universeor black hole physics.

Koichi Hamaguchi

Physics beyond the standard model, in particular SUSY models, their LHC
phenomenology and application to cosmology (baryogenesis, BBN constraints, dark
matter and its signatures).

Karsten Heeger

Solar neutrinos.

Junji Hisano

Theoretical studies for dark matter detection.

Alexander Kusenko

Ultrahigh-energy cosmic rays and very high energy gamma rays, dark matter,astrophysical neutrinos.

Sourav Mandal

Models beyond the Standard Model, and their signatures in astrophysics, cosmic rays
and colliders.

Kai Martens

The Telescope Array experiment studies the highest energy cosmic rays that permeate
the Universe with the aim to positively identify their origin. On the way to that lofty goal I
want to use hybrid events to better understand the air showers themselves.

Hitoshi Murayama
Mihoko Nojiri
Seong Chan Park

34

Dark matter is my primary concern. As a short term goal, I hope to explain the recently
reported “anomalies” in astrophysical observations: The 511 keV line from the galactic
center and the positron excess preliminarily reported by PAMELA. I am also interested
in linking DM with inflaton.

Jing Shu

Baryogenesis, electroweak phase transition, topological defects, and dark matter.

Naoshi Sugiyama

Acceleration of cosmic rays and its relevance for structures of the universe.

Fuminobu Takahashi

High-energy cosmic rays from dark matter.

Mark Vagins

My work involves probing the reactions within the sun via its neutrino emissions, as wellas measuring the dynamics of supernovas via their neutrino spectra and time structure.
Neutron detection in large water Cherenkov detectors would allow early warning, up toa week in advance, of the impending stellar collapse of a large, relatively nearby starlike Betelgeuse, and it would enable the detection of very late-time black hole formation
following supernova explosions anywhere within our galaxy.

IPMU Annual Report 2010

Proton Decay
The stability of the proton represents oneof the greatest theoretical and experimental challenges in particle physics today. In
most grand unified theories, particularly
those with a TeV intermediate mass scale,the proton “wants” to decay. Experimentally, however, the proton seems determined to outlive us all. Beginning with thefirst large-scale searches in the 1980’s, one
promising theory after another has floundered on the shoals of nucleon decay. To
date, no hint of a nucleon decay signal has
emerged.

Research Program

Particle Astrophysics GroupIn spite of this, the study of nucleon decay
provides one of the few approaches to the
problem of confronting grand unified theories with experimental data, and any progress toward this goal has unique value for the future development ofphysics. This program has already been a success. The simplest unification model, minimal SU(5), has been
ruled out by the experimental results. Every subsequent grand unification theory will remain only a mathematical construct if further experimental information is not available.
The search for nucleon decay requires massive detectors. A search with a sensitivity of 1033 years, for example, requires a detector with approximately 1033 nucleons. Since there are 6 × 10 29 nucleons per ton of material, this implies detectors of multi-kiloton scale.
The “classical” proton decay mode, p → e+ π0, can be efficiently detected with low background. At present,
the best limit on this mode (τ/β > 1.21 × 1034 yr, 90% CL) comes from a 206 kton-yr exposure of SuperKamiokande. The detection efficiency of 45% is dominated by final-state π0 absorption or charge-exchange
in the nucleus, and the expected background is 2 events/Mton-yr.
Supersymmetric theories favor the mode p → νK+, which is experimentally more difficult due to the unobservable neutrino. The present limit from Super-Kamiokande is the result of combining several channels, themost sensitive of which is K+ → μ +ν accompanied by a de-excitation signature from the remnant 15N nucleus. Monte Carlo studies suggest that this mode should remain background free for the foreseeable future. The
present combined limit is τ/β > 3.3 × 1033 yr (90% CL).
Recent theoretical work suggests that if super-symmetric SO(10) provides the framework for grand-unification, the proton lifetime (into the favored νK + decay mode) must lie within about one order of magnitude ofpresent limits. Similarly, SO(10) theories suggest τ/β(eπ0 ) ≈ 1035 years—about a factor of ten beyond thepresent limit. Thus, continued progress in the search for nucleon decay inevitably requires larger detectors.
Moreover, the enormous mass and exposure required to improve significantly on existing limits (and theunknowable prospects for positive detection) underline the importance of any future experiment’s ability toaddress other important physics questions while waiting for the proton to decay. Proton decay experiments
have made fundamental contributions to neutrino physics and particle astrophysics in the past, and any future
experiment must be prepared to do the same.

IPMU Annual Report 201035

String Theory

MemberMain Interest

Takaaki Kajita

Updated searches for proton decays.

Henry W. Sobel

Updated measurement of proton decay.

Yoichiro Suzuki

Future large water Cherenkov detectors and also future multipurpose detectors for dark
matter, double beta decay and low energy solar neutrinos. Development of a new typeof light sensor for such detectors.

Mark Vagins

Improving the proton decay measurement in water-based detectors via detection offree neutrons significantly suppressing atmospheric neutrino-induced proton decay
backgrounds. Development of nextgeneration, megaton-scale experiments for proton
decay.

In the past few hundred years, scientists
have searched for fundamental lawsof nature by exploring phenomena at
shorter and shorter distances. Does thisprogression continue indefinitely? Surprisingly, there are reasons to think thatthe hierarchical structure of nature willterminate at 10 −35 meter, the so-called
Planck length. Let us perform a thoughtexperiment to explain why this might be
the case. Physicists build particle colliders to probe short distances. The moreenergy we use to collide particles, theshorter distances we can explore. Thishas been the case so far. One may thenask: can we build a collider with energy
so high that it can probe distances shorter than the Planck length? The answer is
no. When we collide particles with suchhigh energy, a black hole will form andits event horizon will conceal the entire
interaction area. Stated in another way,
the measurement at this energy would
perturb the geometry so much that the fabric of space and time would be torn apart. This would prevent
physicists from ever seeing what is happening at distances shorter than the Planck length. This is a new kindof uncertainty principle. The Planck length is truly fundamental since it is the distance where the hierarchicalstructure of nature will terminate.

Research Program

Proton Decay GroupSpace and time do not exist beyond the Planck scale, and they should emerge from a more fundamental
structure. Superstring theory is a leading candidate for a mathematical framework to describe physics at the
Planck scale since it contains all the ingredients necessary to unify general relativity and quantum mechanics and to deduce the Standard Model of particle physics. Superstring theory has helped us solve various
mysteries of quantum gravity such as the information paradox of black holes posed by Stephen Hawking. The
theory has given us insights into early universe cosmology and models beyond the Standard Model of particle
physics. It provides powerful tools to study many difficult problems in theoretical physics—often involving strongly interacting systems—such as QCD (theory of quark interactions), quantum liquid and quantum
phase transitions. It has also inspired many important developments in mathematics. All of these aspects ofstring theory are vigorously investigated at IPMU.

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IPMU Annual Report 201037

Simeon Hellerman

String theory and its connections to quantum gravity, cosmology, condensed matter,particle physics and mathematics. Development of tools to understand and apply string
theory in generic environments.
Aspects of the AdS/CFT correspondence such as pp-waves, and giant gravitons.
Topological string theory.

Kentaro Hori

4d N=1 string compactifications in various frameworks, especially, worldsheet
approaches to Type II orientifolds with D-branes and fluxes, M-theory on G_ 2 holonomy
manifolds, worldsheet approaches to heterotic strings. Topological strings as well as
supersymmetric gauge theories in various dimensions.

Shinobu Hosono

Mirror symmetry of Calabi-Yau manifolds and its applications to Gromov-Witten theory.

Toshiya Imoto

Holographic QCD.

Johanna Knapp

Mathematical structure of the compact dimensions, dualities, such as mirror symmetry,
which relate different string compactifications.

Wei LiBlack holes. Gauge/Gravity correspondence. 3D quantum gravity.

Todor Milanov

Topological string theory and its applications in geometry.

Shinji Mukohyama

String cosmology.

Hirosi Ooguri

Development of theoretical tools to apply string theory to questions relevant to highenergy physics, astrophysics, and cosmology.

Yutaka Ookouchi

4D supersymmetric gauge theories and its application to problems in particle physics,
including their work via string theories such as a gauge/gravity duality.

Domenico Orlando

Exact CFT solutions. Topological strings. Effective descriptions for M-theory.

Susanne Reffert

String compactifications. Topological string theory.

Johannes Schmude

Aspects of gauge/string duality, especially flavor-branes.

Kenneth Shackleton

Connection between string theory and the completion of the Weil-Petersson metric on
Teichmueller space.

Cornelius Schmidt-Colinet

Conformal field theory and its applications in string theory.

Shigeki Sugimoto

Conjectured duality between string theory and gauge theory, and its

Black Hole

Transparent

Earth LifeFirst Star
Galaxyn

Minxin Huang

The standard Big Bang model posits that theuniverse was nearly homogeneous and very
hot when it was born. Tiny “ripples” in the
distribution of matter were generated througha rapid expansion phase called inflation in thevery early universe. These primeval density
fluctuations grew by the action of gravity,
eventually forming luminous objects such as
galaxies.

Fir

Time

Adapted from “Physics of the history of the universe”
by Yasuo Fukui et al.

Research Program

Gauge/gravity correspondence, flavor branes, and condensed matter physics.

Present

Mitsutoshi Fujita

Cosmic Dark Age

utes
st 3 Mintio

Main Interest

fla

MemberThere are rich structures in the present-day
universe, such as stars, galaxies, and largescale structure. We study how these objects
are formed using large computer simulations
and sophisticated theoretical models.

In

Structure Formation

Big Bang

String Theory GroupThe energy content of the universe and basic statistic that describe the condition of the early universe havebeen determined with great accuracy from recent observations of cosmic microwave background radiation,
large-scale galaxy distribution and distant supernovae. Cosmology is now at a stage where theory can makesolid predictions, whereas a broad class of observations can be directly used to verify them. Planned large astronomical surveys such as Sloan Digital Sky Survey III and Subaru HyperSprime Cam Survey will provide
rich information on the nature of dark matter and dark energy. Accurate theoretical predictions are needed tomake the full use of the observational data.
Our primary interests are in primordial star formation in the early universe, the formation and evolution ofgalaxies, and the formation of large-scale structure. Results from these studies will be used for making goodplans and proposals for Subaru-HSC/PFS dark energy survey.

application to QCD and hadron physics.
Yuji Tachikawa

Study of supersymmetric field theories in various dimensions using the help of string
theory; study of mathematical structures behind string theory.

Tadashi Takayanagi

String theory as quantum gravity especially from the viewpoint of holography such as
AdS/CFT duality. Relation between the entanglement entropy and the gravitational
entropy such as the black hole entropy.

38

Taizan Watari

String phenomenology. Inflation (in the past). GUT and F-theory compactification.

Simon Wood

Conformal field theory and understanding its implications in string theory.

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39

40

MemberMain Interest

Rafael S. de Souza

Primordial magnetic fields, first stars, dark matter halos, primordial gamma ray bursts.

Issha Kayo

Extraction of cosmological information from the large-scale structure of the Universe,
particularly using the actual data taken by the Sloan Digital Sky Survey and virtual
data generated by N-body simulations. Construction of a homogeneous catalog ofgravitationally lensed quasars to constrain the dark energy.

Tsz Yan Lam

Distributions of dark matter halos and dark matter field. Environmental dependence of
halo formation.

Yen-Ting Lin

Atacama Cosmology Telescope (ACT) project, a large cluster survey that detects
clusters via the Sunyaev-Zel’dovich effect (SZE). Analyses of the data from ACT,
SDSS, and Subaru, to study the evolution of galaxies within clusters, as well as to use
the statistical properties of clusters (such as clustering and abundance) to constrain
cosmology.

Tomoki Saito

Observational studies of high-redshift galaxies using the data from Subaru Telescope,
Very Large Telescope, and various telescopes ranging from radio to X-ray. Calibration
studies for wide-field imaging surveys with the Hyper Suprime-Cam.

Ikkoh Shimizu

Theoretical models of high redshift galaxies.

John Silverman

Observational studies of active galactic nuclei and their host galaxies. The formationand evolution of supermassive black holes are being investigated in survey fields
including COSMOS, Chandra Deep Field South and the Sloan Digital Sky Survey.
For example, we are carrying out a near-infrared spectroscopic survey of AGNs andquasars with Subaru/FMOS to measure the distribution of black hole masses anddetermine whether the local black hole-host galaxy mass relation holds at high redshift.
Additional studies include the role of galaxy mergers in triggering accretion onto
supermassive black holes and the influence of larger scale structures such as galaxygroups and clusters.

Naoshi Sugiyama

Investigation of linear evolution of structure in the universe and effect of magnetic fields.

Masahiro Takada

Observational and theoretical studies of gravitational lensing caused by hierarchicalstructures of the universe. Nature of dark side of the universe, dark matter and darkenergy, with the gravitational lensing observables. Future Subaru Weak Lensing Survey.

Masayuki Tanaka

Observational studies of the formation and evolution of galaxies and large-scale
structures using data from the Sloan Digital Sky Survey, Subaru telescope, and Very
Large Telescope.

Atsushi Taruya

Modeling dynamics and statistics of large-scale structure of the Universe, and testing
various cosmological scenarios and/or hypothesis through direct comparison between
theory and observations. A pursuit of the prospects for future observations such as HSC
and BOSS to constrain dark energy, massive neutrinos, primordial non-Gaussianity as
well as to test theory of gravity.

Naoki Yoshida

Formation of stars, galaxies and the large-scale structure of the universe using
supercomputer simulations.

IPMU Annual Report 2010

Supernova
Supernovae are explosions of stars at theend of their lives. Core-collapse supernovae (Type II, Ib, and Ic) are the outcomeof the gravitational collapse of massive
stars (i.e., more than ten times as massive as the Sun), followed by formationof a neutron star or a black hole, announced by a huge amount of neutrinos.
Thermonuclear supernovae (Type Ia) are
explosions driven by nuclear reactions
within a white-dwarf star.
Research Program

Structure Formation Group

Supernovae provide natural laboratories
for a range of physical processes, suchas neutrino physics, some of which cannot be addressed by experiments on the
Earth. Furthermore, they are the main
contributors of heavy elements in the
Universe; without them, baryons in the
Universe would be only hydrogen, heCredit: Subaru telescopelium and some minor elements, although
in reality the Universe is filled with
about a hundred different sorts of elements. Their energy produced at the explosions is huge, and supernova
explosions could play important roles even in formation and evolution of galaxies. Finally, importance ofunderstanding their natures is highlighted by their use as cosmological distance indicators, leading to the discovery of the Dark Energy.
Our understanding of the above issues is still far from satisfying, with various issues still under investigation. At IPMU, we cover most of the topics related to supernovae both in theory and observation/experiment;
Evolution of stars toward supernovae, theory of explosions, attempt to detect these neutrinos at Kamioka,
nucleosynthesis of elements up to iron and beyond, formation of dust grains, theory of optical emission fromsupernovae and evaluation of their use as cosmological distance indicators, and observations using the Subaru telescope including future large survey planning with the HSC. By unifying these attempts, we aim tocomprehensively understand supernovae and their influences on the evolution of the Universe.

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6 Research Highlight

MemberMain Interest

Melina Bersten

Hydrodynamical models of core-collapse supernovae with the aim to study the physicalproperties of the progenitor stars.

Emille Ishida

Type Ia supernova-Influence on galaxies dark matter profile-Signatures in baryonicenvironment.

Rafael S. de Souza

Influence of the supernovae explosions in the dark matter density profile, magnetizationof the universe by first supernovae.

Gaston Folatelli

Supernova observations, including searches and intensive photometric andspectroscopic follow up. The goal is to gain a deeper understanding of the physicalprocesses involved in the explosion, and of the stellar evolution paths that lead todifferent types of supernovae.

Alexander Kusenko

Pulsar kicks, supernova neutrinos, supernova asymmetries.

Keiichi Maeda

Theory of nucleosynthesis and radiation transfer. Observations of individual
supernovae.

Masayuki Nakahata

Search for supernova neutrinos using Super-Kamiokande detector. It covers bothsupernova burst neutrinos and supernova relic neutrinos.

Ken’ichi Nomoto

Type Ia supernova cosmology to provide precision constraints on cosmic accelerationand the equation of state of dark energy by clarifying the progenitors and explosion
mechanism. Evolution and nucleosynthesis of first stars to study cosmic chemical
evolution. Gamma-ray bursts and hypernovae to clarify the production mechanisms ofhuge explosion energy from black holes and neutron stars.

Takaya Nozawa

Evolution of dust at high redshifts, considering the formation of dust in supernovae anddestruction of dust in the shock driven by supernovae.

Henry W. Sobel

Super-Kamiokande and T2K for studying neutrino physics, supernova, and proton
decay.

Yoichiro Suzuki

Development of future multi-megaton detectors which can detect neutrino bursts fromsupernovae every year.

Yasuo Takeuchi

Real-time neutrino burst search in Super-Kamiokande.

Masaomi Tanaka

Observations of core-collapse and Type Ia supernovae especially with optical
spectroscopy and spectropolarimetry. Numerical simulations of radiative transfer.

Mark Vagins

Detection of the diffuse neutrino background produced by distant supernovae.
Improvement of Super-Kamiokande experiment’s response to the arrival of a burst ofneutrinos from a supernova within our galaxy.

Naoki Yoshida

Theory of evolution of very massive stars and core-collapse supernovae. Supernova
light-curves and hunting for high redshift supernovae using groud-based and spacetelescopes.

Shedding Light on Dark Radiation
One of the most important discoveries in cosmology is that the Universe is expanding. According to generalrelativity, the expansion rate is determined by the energy contained in the Universe. In fact, measuring the
expansion rate has been one of the central issues, because it provides fundamental cosmic age and distancescales. For instance, a precise measurement of Type Ia supernovae revealed that the present Universe is filledwith dark energy, which accelerates the cosmic expansion. It is even possible to infer the particle content of
the Universe in the past, by measuring the primordial abundance of 4He, the cosmic microwave background(CMB) anisotropies, and large scale structure (LSS).
The primordial abundance of 4He was the key observational evidence for the big bang theory. The big bang
nucleosynthesis (BBN) calculation agreed reasonably well with the observed 4He mass fraction Yp together
with other light element abundances given in terms of a function of the baryon-to-photon ratio, η. In the
post-WMAP era, η was determined to a very high accuracy, which allowed the internal consistency checkof the BBN calculation based on the standard big bang cosmology. Recently, Izotov and Thuan claimed an
excess of Yp at the 2σ level which can be understood in terms of an extra light degrees of freedom, namely,
dark radiation. The CMB and LSS data are also sensitive to the presence of such dark radiation after matterradiation equality, and the recent analysis based on the CMB and LSS data shows a slight preference for darkradiation at the 2σ level. It is remarkable that, while the helium abundance, the CMB and LSS data are sensitive to the expansion rate of the Universe at vastly different times, all the data mildly favor dark radiation.

Research Highlight

Supernova Group

Suppose that there is indeed dark radiation. Question is then what it is made of. The dark radiation may becomposed of unknown particles. Fuminobu Takahashi and Tsutomu Yanagida at IPMU, in collaboration with
Kazunori Nakayama at KEK, tackled this timely and interesting issue and examined various theoretical possibilities from a cosmological, as well as from a particle physics point of view. Their main conclusion is thatthe most plausible candidate for dark radiation is a chiral fermion ψ charged under a new gauge symmetry,
under which the standard model fermions such as quarks and leptons are also charged. Here the new gauge
symmetry is to forbid a bare mass for the chiral fermion, and that is why it remains light and can be dark radiation. (If it had a large mass, it would be more like dark matter, not dark radiation.) In the early Universe,
the chiral fermionψ will be in thermal equilibrium through the new gauge interactions with the standard
model particles. If the new gauge symmetry is spontaneously broken at TeV scale, the chiral fermion decouples from plasma after the QCD phase transition, and therefore accounts for dark radiation if it still remains
light.
They also discussed a possible candidate for such new gauge symmetry. The simplest one is a U(1) gauge
symmetry, which must be free from the quantum anomaly. One of the anomalyfree U(1)s is U(1) B−L , which
naturally appears in the SO(10) GUT. Actually, however, the U(1) B−L symmetry should be spontaneously
broken at a scale much higher than the weak scale, in order to explain tiny neutrino masses through the seesaw mechanism. In fact, an additional anomaly-free U(1) often appears in the breaking pattern of a GUT
gauge group with a higher rank. They showed that there is indeed a suitable candidate for the new U(1) gauge
symmetry as well as the light chiral fermion ψ in an E6 -inspired GUT, which contains an additional U(1), as
E6 → SO(10) × U(1).
The new gauge symmetry must be spontaneously broken at TeV scale, in order to account for the recent observations. Interestingly, therefore, it is in principle possible to directly probe the dark radiation sector at thecollider experiments such as LHC! This was a rather unexpected result. The dark radiation may turn out tobe a crucial key to understand not only the evolution of the early Universe, but also the high-energy physics
from TeV scale up to the GUT scale.

Further reading: Physics Letters B 697, 275 (2011).

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IPMU Annual Report 201043

A team of researchers from Japan, Taiwan, and the United Kingdom has provided the first direct and clear
evidence for an extremely flattened shape of dark-matter distribution in massive clusters of galaxies, a findingthat confirms a major prediction of the prevailing dark matter model. The researchers took advantage of thegravitational lensing effect to make detailed measurements of the spatial distributions of dark matter in 20
massive clusters of galaxies. A thorough examination of the shape of dark-matter distribution in the cosmos
may open up a new way to explore the nature of this enigmatic matter.
The nature of dark matter is still unknown and is currently a central problem in modern astronomy and physics. Dark matter is dark in a couple of ways. It is undetectable to visible light and has escaped detection at allelectromagnetic wavelengths. Because it is invisible, its existence has to be inferred from its gravitational effect on other celestial objects as well as from theoretical models. Indirect evidence has established its relative
abundance in our universe—probably five times greater than visible matter—in addition to its significancefor understanding galaxy formation. For example, a considerable amount of dark matter probably sustains the
structure of galaxies, because the gravitational force of visible matter cannot bind its member stars. The scientific challenge is how to study the nature of dark matter. Astronomers seek ways to use their observations
to solve this puzzle.
One approach to a solution is to make detailed measurements of the spatial distribution of dark matter andthen compare the data to predictions drawn from theoretical models. Both aspects of this approach have theirdifficulties. How can the distribution of dark matter be measured? What are plausible assumptions to include
in models of dark matter?
A team led by Masamune Oguri at the National Astronomical Observatory of Japan and Masahiro Takada at
IPMU decided to use gravitational lensing to measure and analyze the distribution of dark matter. Gravitational lensing provides a unique opportunity to explore dark matter distributions by measuring the distancesthat light travels from distant to foreground objects. Einstein’s general theory of relativity predicts that lightfrom a distant object will bend around a massive object in the foreground, e.g., a cluster of galaxies or a concentration of dark matter. By measuring the distortion pattern of many distant galaxies, it is possible to infer
the mass(es) of the object(s) in the foreground. Since the technique does not rely on assumptions about thevisibility of the matter bending the light, gravitational lensing can be a powerful probe of dark matter.
A Subaru image of the A2390 cluster
region is superimposed with the analysis
result for dark matter distribution. Purple
hue shows the dark matter distribution,with the darker color indicating the denser
dark matter concentration.

The team fine-tuned their research by observing 20
massive clusters of galaxies with the Subaru Telescope’s Prime Focus Camera (Suprime-Cam). Clusters of galaxies are ideal sites for studying the distribution of dark matter, because they contain thousandsof galaxies and are known to accompany a large
amount of dark matter. The superb light-collecting
power and excellent image quality of the Subaru Telescope gave the researchers an extra advantage. By using Suprime-Cam at prime focus, they could capture
objects in a particularly wide field-of-view.
Observations with Suprime-Cam yielded wide-field
images of 20 massive clusters of galaxies (typicallylocated at 3 billion light years from Earth), which theteam then used to measure and analyze dark matter
distributions (first figure). From their detailed analysis
of gravitational lensing effects in the images, the teamobtained clear evidence that the distribution of dark
matter in the clusters has, on average, an extremely
flattened shape rather than a simple spherical contour(second figure). The measured degree of the flattening is quite large, corresponding to 2:1 in terms of theratio of major to minor axes of the ellipse. This finding represents the first direct and clear detection of
flattening in the dark matter distribution with the useof gravitational lensing.

Ellipticity of the dark matter distribution for 18 galaxy
clusters. Zero ellipticity means that the distribution isspherical, while a larger value indicates a more flattened
distribution. The measurement peaks at around 0.5 (corresponding the 2:1 ratio of major to minor axes of theellipse). The black curve shows a theoretical prediction
based on the standard collisionless, cold dark mattermodel (Yipeng Jing and Yasushi Suto, 2002), in good
agreement with the observation.

Research Highlight

Flat Dark-Matter Distribution

In addition to the promise of using gravitational
lensing for exploring the nature of dark matter, thisresearch contributes to the theoretical modeling of dark matter. Detailed comparisons of the team’s findings
with theoretical model predictions show that the observed degree of the flattening is in excellent agreementwith theoretical expectations.
Theoretical predictions depend on what kind of dark matter model is assumed. This research strongly supports the prevailing model, which begins with the assumption that dark matter consists of weakly interacting
massive particles that are relics of the Big Bang. These particles are assumed to be ”cold,” i.e., thermal motions of the particles are negligibly small. According to this scenario, clusters of galaxies are dynamically
young objects that form through the merging of many small objects. This theory predicts that the dark matter
distribution in clusters of galaxies would be non-spherical, reflecting a large-scale structure of dark matterfilaments (i.e, ribbons of cold material). Since the team’s findings confirm a non-spherical distribution, they
demonstrate the feasibility of exploring the nature of dark matter via flattening in the dark matter distribution.

Further reading: Monthly Notices of the Royal Astronomical Society 405, 2215, 2010.

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IPMU Annual Report 201045

Are “Standard Candles” Really Standard?
Type Ia supernovae have been playing a key role in cosmology and in the discovery of the Dark Energy, since
they can be used to measure distances across the Universe. This relies on the well-developed relation between
their brightness and the decline rates—brighter supernovae decline slower.
This single-parameter description of type Ia supernovae may well reflect the uniform nature of the progenitor
system. Type Ia supernovae are explosions of a white dwarf consisting of carbon and oxygen. The explosion
is triggered by sparks of thermonuclear flames ignited in the innermost part of the white dwarf, although how
the explosion is initiated is still in debate. The explosion most likely takes place when the white dwarf reaches the so-called Chandrasekhar mass (about 1.4 times the Sun) through accreting materials from its binary
companion or by merging with another white dwarf.
However, recent investigations haverevealed that the true nature of type Ia
supernovae is far more complicated.
They indeed do not look like a uniform
system in their spectral features: typeIa supernovae that look like twins concerning their luminosity evolution candemonstrate a quite different behavior in
the speed with which their spectral features evolve (the so-called velocity gradient). This spectral evolution diversity
was first noticed in the late 1980s, andquantified beyond the doubt in 2005.
The origin of this diversity has not beenclarified, raising a couple of concerns:
Are they really good standard candles?
Are they indeed from a uniform progenitor system?
The research group led by Keiichi Maeda (also including Ken’ichi Nomoto andMasaomi Tanaka of IPMU) has report(a) The relation between the velocity gradient (vertical axis, meaed that they have finally identified thesuring the speed of spectral evolution) and the late-time emission
velocity shift (horizontal axis, in which the wavelength shift is conorigin of the diversity. They have foundverted to the velocity shift). These two independent quantities havethat the velocity gradient is closely returned out to be correlated strongly, indicating that these diversities
lated to another independent observed
have the same physical origin. (b, c) The number of type Ia superquantity, namely the wavelength shiftnovae as a function of (b) the velocity gradient, and (c) the late-timeof emission lines in late-time spectra ofemission shift.
type Ia supernovae taken about > 200days after the explosion (first figure).
This late-time emission-line shift has astraightforward interpretation that the shift can arise only if the innermost part of supernovae is asymmetricand the degree of the shift depends on the direction from which a SN is observed. Now the origin of the spectral evolution diversity must be the same: it is merely a consequence of the random directions from which an
SN is viewed.
This finding is not only about uncovering the origin of the spectral diversity. It can get rid of a concern about
using type Ia supernovae for cosmology, since this viewing angle effect will average out if we collect manysupernovae for cosmology. In addition, the idea of the uniform progenitor system is rescued. Finally, this is
the first strong observational indication about how the thermonuclear flames are ignited in the explosion: thefinding points to asymmetric, off-centre explosions, as opposed to what most people had believed so far.

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Research Highlight

A schematic picture of structure of type Ia supernovae derived by
the observations. The ash of the initial sparks is at an offset (yellow). Depending on the viewing direction from which a supernova
is observed, a supernova manifests different spectral properties:
If viewed from the offset direction, it appears as a Low-VelocityGradient SN and shows blueshift in late-times. From the opposite
direction, a SN is a High-Velocity- Gradient SN and shows redshift (as is shoawn in the observational data in the first figure).
Here, low- and high-velocity-gradients SNe are those showing aslow and rapid evolution in spectral features, respectively.

Further reading: Nature2010 July 1 issue.

Instantons and Two-dimensional Conformal Field Theories
Instantons, which were introduced in the 1970s, are elementary excitations of the four-dimensional gauge
theory, localized in both spatial and temporal directions. They play important roles in the theoretical understanding of the dynamics of the quantum chromodynamics governing the ”strong force”, one of the four basic
forces of nature. Not only that, instantons turned out to be a rich source of mathematics. They obey a nonlinear partial differential equation, which was found to be exactly solvable on a flat four-dimensional spaceby Atiyah, Drinfeld, Hitchin and Manin. Furthermore, instantons were shown by Donaldson to provide a hostof new insights into the geometry of four-dimensional curved manifolds, revolutionizing the field.
Conformal field theory describes a physical system which is invariant under the change of the length scale.
This typically happens when the system is at the critical point, that is, when the parameter is chosen very
carefully so that its phase is about to change. A magnet exactly at the temperature when it loses its magnetization is an example of such a system. Conformal field theories in two dimensions are particularly interesting objects, because they have an infinite-dimensional symmetry. In the middle of 1980s, Belavin, Polyakov
and Zamolodchikov showed that this infinite-dimensional symmetry allows us, in some cases, to completely
determine the dynamics by the symmetry alone. Such systems can be experimentally realized, and the observed values were in agreement with the theoretical predictions.
Both instantons and two-dimensional conformal field theories are rigorous subjects in mathematical physics
intensively studied in the last thirty years. People had observed that there are tantalizing similarities between
these two types of objects, and finally in 2009, string theorists Alday, Gaiotto and Tachikawa found a concrete way to relate the quantity on one side to another quantity on the other side. The most basic instance ofthe relation is as follows: on the side of the instantons, one considers a statistical-mechanical ensemble ofinstantons, and compute its partition function; on the side of the two-dimesnional conformal field theory, one
studies a coherent state of the system, and take the norm of that coherent state. By a simple mapping of parameters, the partition function of the four-dimensional theory agrees with the norm of the coherent state.
Instantons are objects in four-dimensional spacetime, two-dimensional conformal field theories are obviously theories in two-dimensional spacetime. Therefore connecting them was a nontrivial manner, from a
traditional point of view of mathematical physics, which usually dealt with phenomena in a definite numberof spacetime dimensions, usually equal or less than four because our spacetime is four-dimensional. String
theory was useful in the following manner. First, the consistency of string theory requires that the spacetime

IPMU Annual Report 201047

This relation can be thought of as an instance of general phenomena, where a calculation of a physical quantity in string theory reduces to two completely different-looking calculations. Mirror symmetry which relates
symplectic geometry and complex geometry is another famous instance of this general phenomena. String
theory is not at all rigorous from the point of view of contemporary mathematics. However, the relation extracted from string theory, such as mirror symmetry or this relation between instantons and two-dimensional
conformal field theories, can be formulated completely rigorously, and becomes a conjecture to be proved byserious mathematicians.
In this particular example, the mathematically formulated version of this relation is that the equivariant cohomology group of the moduli space of instantons should have a natural action of the infinite-dimensional
Virasoro algebra. There is in fact a subfield of mathematics called geometric representation theory, where
infinite-dimensional algebras are constructed in terms of geometric structures, and this relation gave a lot of
impetus to the experts in this field. Simplified versions of this statement has already been proved in 2010, andthe full proof is said to be quite close.
This division of labor between string theorists and mathematicians can be compared to the division of labor
between theoretical physicists and experimental physicists. Experimental physicists perform experiments,
which theoretical physicists interpret and come up with a theory; then theoretical physicists give predictions
and experimental physicists either confirm or disprove them by real data. Similarly, mathematicians provide
theorems, which string theorists interpret in string theory; then string theorists give further conjectures inmathematics, which mathematicians prove by rigorous means.

7 Awards
David Spergel won the Shaw Prize in Astronomy jointly with Charles Bennett ofJohns Hopkins University and Lyman Page Jr of Princeton University in recognitionof their pioneering work on the satellite experiment ”Wilkinson Microwave Anisotropy Probe (WMAP)” that has contributed to breakthrough in better understanding
the shape, makeup and age of the universe.

Ken’ichi Nomoto was awarded the Institut d’Astrophysique de Paris Medal for his
theoretical contribution of the supernovae research. The IAP medal is awarded annually to an astrophysicist who made significant contribution in related fields on theoccasion of IAP’s annual colloquium.

Awardsis either ten or eleven-dimesnional. This causes great trouble when string theory is thought of as providing
a microscopic description of the real world, because our world is four-dimensional. However having a lot of
dimensions comes in handy in this case. String theory has solitonic objects called M5-branes, which extend
along six spacetime directions. The M5-branes, being six-dimensional, can be put on the product of a fourdimensional curved manifold and a two-dimensional curved manifold. Then, physical quantities associated to
the M5-branes can be calculated either from the four-dimensional view-point, or from the two-dimensional
viewpoint. The first route reduces to the calculation involving instantons, and the second route reduces to
two-dimensional conformal field theory. Most simply put, the important relation is that 6=4+2: the six-dimensional physics can encompass both two-dimensional and four-dimenisonal physics. String theorists Yuji
Tachikawa and Min-xing Huang at IPMU have worked and written papers on this subject.

Eiichiro Komatsu won the Nishinomiya-Yukawa Memorial Prize for his contribution
to constrain the cosmology parameters such as the age of the universe and the darkenergy, and to constrain the models of the early universe such as the inflation modelusing WMAP data.

Further reading: arXiv:1009.1126 and arXiv:1102.0076.

Tadashi Takayanagi won the Yukawa-Kimura Prize for his contribution on “Holography and tachyon condensation in superstring theory.” This prize is given annuallyto a scientist who made significant contribution to the fields of gravity theory, spacetime theories, and field theory. Selection is also based on if the recipients are likely
to be expected to play a leading role in those fields in future.

Classical and Quantum Gravity (CQG) Journal has selected an article “The renormalizability of Horava-Lifshitz-type gravities” by Domenico Orlando and SusanneReffert for one of the highlight papers of the period 2009-2010. This journal is wellacknowledged among physicists, mathematicians and cosmologists in the fields ofgravitation and the theory of spacetime.

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IPMU Annual Report 201049

8 Seminars
Young Scientist Award of the Physical Society of Japan was awarded to Fuminobu
Takahashi based on his three publications, “Gravitino overproduction in inflaton decay,” “The gravitino overproduction problem in inflationary universe” and “Inflaton
Decay in Supergravity.”Toshiyuki Kobayashi won the Inoue Science Prize for his important contribution
on analysis of symmetry of infinite dimensions. The citation said “His work is abeautiful harmony of all areas of basic concepts that constitute mathematics, namely
algebra, geometry and analysis. His work has given great impacts on many areas ofmathematics and has pioneered new areas of research.”

JFY2010
Masaomi Tanaka (IPMU)
Spectropolarimetric View of Supernova Explosions
Apr 01, 2010
Hiroyuki Fuji (Nagoya)
Volume Conjecture and Topological Recursion
Apr 06, 2010

Yoichiro Suzuki won the Bruno Pontecorvo Prize for his outstanding contribution
to the discovery of atmospheric and solar neutrino oscillations in the Super-Kamiokande experiment. The prize, awarded annually since 1995 by the Joint Institute for
Nuclear Research (JINR) in Russia, recognizes significant achievements in elementary particle physics.

Serguey Petcov won the Bruno Pontecorvo Prize for his fundamental contribution
to the investigation of neutrino propagation in matter, μ → e + γ, μ → 3e processes
and Majorana properties of neutrinos.

Joshua Ruderman (Princeton)
Hiding the Higgs with Lepton Jets
Apr 08, 2010
Bertrand Toen (Montpellier)Lecture 1: Generalities on dg-categories
Apr 13, 2010
Bertrand Toen (Montpellier)Lecture 2: Moduli 1: moduli space of simple objects
Apr 14, 2010
Alexander Kusenko (UCLA)
A tale of two spectra: from a gamma-ray puzzle to cosmic rays and dark matter
Apr 15, 2010
Bertrand Toen (Montpellier)Lecture 3: Moduli 2: moduli of non simple objects andhigher stacks
Apr 15, 2010
Boris Tsygan (Northwestern)
Oscillatory Modules and Applications to Symplectic
GeometryApr 15, 2010

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Seminars

The Young Scientist Award in Theoretical Physics was awarded to Seong Chan Park
based on his publication “Rotating black holes at future colliders: Greybody factors
for brane fields,” which treated black holes in detail, for the first time, for building aparticle physics model beyond-the-standard-model containing extra dimensions.

Bertrand Toen (Montpellier)Lecture 4: Topological and motivic invariants of dgcategories
Apr 16, 2010
Bruce Draine (Princeton)
New Views of Interstellar Dust
Apr 19, 2010
Masato Taki (YITP)
2D Conformal Symmetries, 4D Gauge Theories, & AGT
RelationsApr 20, 2010
Bruce Draine (Princeton)
Lecture 1 Observed Properties of Interstellar Dust
Apr 20, 2010
Bruce Draine (Princeton)
Lecture 2 Physics of Interstellar Dust (1)Apr 21, 2010
Christoph Weniger (DESY)
Decaying dark matter, anisotropies, lines, and the
Fermi LAT gamma-ray data
Apr 22, 2010
Bruce Draine (Princeton)
Lecture 3 Physics of Interstellar Dust (2)Apr 22, 2010
Andrea Prudenziati (SISSA)
Taming open/closed string duality with a Losev trickApr 23, 2010

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51

Akira Ishii (Hiroshima)
Dimer models and exceptional collections
Apr 26, 2010

Johanna Knapp (IPMU)
Global SO(10) F-theory GUTs
May 25, 2010

Alexander Voronov (Minnesota)
Higher Categories and TQFTs
Jun 29, 2010
Brian Wecht (IAS)
Recursion Relations and String Theory Amplitudes
Jun 30, 2010

Akishi Ikeda (Tokyo)
The correspondence between Frobenius algebra of
Hurwitz numbers and matrix models
Apr 26, 2010

Robert Quimby (Caltech)
The Illuminating Deaths of Massive Stars
May 25, 2010

Andrei Frolov (Simon Fraser)
Non-linear dynamics and primordial curvature perturbations from preheating
Jul 06, 2010

Bruce Draine (Princeton)
Lecture 5 Evolution of Interstellar Dust
Apr 27, 2010

Lawrence Krauss (Arizona State)
Cosmology as Science? From Inflation to Eternity
May 26, 2010

Valery Rubakov (Moscow, INR)
Infrared modified gravity with dynamical connection
Jul 08, 2010

Chris Belczynski (LANL, Warsaw Observatory)
Double Compact Objects in Universe
May 06, 2010

Lawrence Krauss (Arizona State)
Primordial Gravitational Waves as Probes of the Early
Universe
May 27, 2010

Daniel Holz (Los Alamos)
Cosmology from gravitational-wave standard sirens
Jul 09, 2010

Kazushi Ueda (Osaka)
Dimer models and exceptional collections (Part 1)
Tropical coamoebas and A-infinity categories ( Part 2)
May 10, 2010
Daniel Moskovich (JSPS/RIMS Kyoto)
Untying coloured knots
May 11, 2010

Takahiro Sumi (Nagoya)
Study of the Galactic structure and halo dark matterby Gravitational microlensing
May 27, 2010
Matthew Headrick (Brandeis)
New approaches to numerical Calabi-Yau metrics
Jun 01, 2010

Wolfgang Lerche (CERN)
Matrix Factorizations, Contact Terms and Intersecting
BranesMay 11, 2010

Daniel Greenwald (Max Planck Inst)
Muon Colliders & Frictional Cooling
Jun 01, 2010

Wolfgang Lerche (CERN)
Matrix Factorizations, Contact Terms and Intersecting
BranesMay 12, 2010

Linda Uruchurtu (Imperial College London)
Warped anti-de Sitter spaces from brane intersections
in type II string theory
Jun 08, 2010

Wolfgang Lerche (CERN)
Matrix Factorizations, Contact Terms and Intersecting
BranesMay 13, 2010

Andreas Karch (U Washington, Seattle)
A Particle Physicist’s Perspective on Topological Insulators
Jun 15, 2010

Charlie Beil (UC Santa Barbara)
The geometry of noncommutative singularity resolutions: shrinking exceptional loci to zero size
May 17, 2010

Martijn Wijnholt (Max Planck Inst)MSW Instantons
Jun 15, 2010

Antal Jevicki (Brown)
Classical AdS String : Solutions and Dynamics of Moduli
May 18, 2010
Frans Klinkhamer (Karlsruhe Inst Tech)
New approach to the cosmological constant problem:
q-theory
May 18, 2010
Satoshi Kondo (IPMU)Part 1: First introduction to number theory
May 19, 2010
Satoshi Kondo (IPMU)Part 2: Algebraic varieties (schemes) and some conjectures in number theory
May 19, 2010
Shigeki Matsumoto (Toyama)
CDMS II result and Light Higgs Boson Scenario of the
MSSM
May 21, 201052

Poshak Gandhi (ISAS, JAXA)
New constraints on accretion from Optical and X-ray
rapid timing observations of black hole binaries
May 25, 2010

IPMU Annual Report 2010

Jounghun Lee (Seoul Nat U)
Bullet Cluster: A Challenge to LCDM Cosmology
Jun 17, 2010
Roger Blandford (KIPAC, Stanford)
Fermi’s Restless Universe
Jun 18, 2010
Masahiro Futaki (Tokyo)
Homological mirror symmetry for toric Fano stack andsuspension for directed Fukaya categories
Jun 21, 2010
Nakwoo Kim (Kyung Hee U)
Holographic superconductors from M5-branes
Jun 22, 2010
Almudena Arcones (Basel)
Heavy element synthesis in neutrino-driven neutronstar winds of core collapse supernovae
Jun 22, 2010
Kentaro Nagao (Nagoya)Donaldson-Thomas theory and cluster algebras
Jun 28, 2010

Martin Guest (Tokyo Met U)
Differential equations aspects of quantum cohomology(Part 1) Some new solutions of the tt*-equations (Part 2)
Jul 12, 2010
Nobuhiko Katayama (KEK)
B is for BIRD
Jul 13, 2010
Alexander Voronov (Minnesota)
Introduction to Quantum Deformation Theory
Jul 13, 2010
Alexis Finoguenov (MPE)Groups and clusters of galaxies in deep X-ray surveys
Jul 14, 2010
Daisuke Nagai (Yale)
Cosmology and Astrophysics with Galaxy Clusters: Recent Advances and Future Challenges
Jul 15, 2010
Alexander Voronov (Minnesota)
Quantum Deformation Theory
Jul 20, 2010
Yuu Niino (Kyoto)
Host Galaxies of ”Dark” Gamma-Ray Bursts
Jul 21, 2010
Kentaro Nagamine (U Nevada Las Vegas)
Galaxy Formation with Cosmological Hydrodynamic
Simulations in the JWST Era
Jul 21, 2010
Valya Khoze (IPPP Durham)
Phenomenology of Pure General Gauge Mediation
Jul 22, 2010
Ed Segal (Imperial college London)
The Calabi-Yau/Landau-Ginzburg correspondence for
B-branes
Jul 26, 2010
Zheng Zheng (Yale)
Radiative Transfer Modeling of Lyman Alpha Emittersand New Effects in Galaxy Clustering
Jul 27, 2010
Alexander Voronov (Minnesota)
Quantum Deformation Theory
Jul 27, 2010

Yutaka Hosotani (Osaka)
Gauge-Higgs Unification: Stable Higgs, Dark Matter,and Colliders
Jul 29, 2010
Zohar Komargodski (IAS)
Methods in Supersymmetric Field Theories and Supergravity Theories
Aug 03, 2010
Massimo Porrati (New York U)
Strong Coupling and Causality in High-Spin Massive
Particles: the Charged Spin 3/2 Example
Aug 04, 2010
Alexander Voronov (Minnesota)
Quantum Deformation Theory
Aug 05, 2010
Ragnar-Olaf Buchweitz (Toronto)
The Annihilator of the Derived Singularity Category
Aug 17, 2010
Alexander Voronov (Minnesota)
Quantum Deformation Theory
Aug 18, 2010
Masahito Yamazaki (IPMU)
Donaldson-Thomas invariants, wall-crossing and matrix models
Aug 23, 2010
Chris Brook (U Central Lancashire)
Forming Bulgeless Disk Galaxies
Aug 24, 2010
Alexander Voronov (Minnesota)
Quantum Deformation Theory
Aug 25, 2010

Seminars

Bruce Draine (Princeton)
Lecture 4 Dust in Galaxies
Apr 26, 2010

Cornelius Schmidt-Colinet (IPMU)
2-dimentional lattice models and renormalization
Aug 26, 2010
Kyoji Saito (IPMU)
Special Geometry (after Strominger)
Aug 27, 2010
Makoto Miura (Tokyo)
Toric degenerations of Grassmann manifolds and mirror symmetry
Aug 30, 2010
Mircea Voineagu (IPMU)
Semi-topological invariants of real algebraic varieties
Aug 31, 2010
Emanuel Scheidegger (Augsburg U)
The Yau-Zaslow conjecture and Noether- Lefschetz
theorySep 01, 2010
Raphael Flauger (Yale)
Resonant Non-Gaussianity from Axion Monodromy
Inflation
Sep 02, 2010
Shin Nakamura (Kyoto)
Negative Differential Registivity from Holography
Sep 02, 2010
Zengo Tsuboi (Osaka City U)
Wronskian solutions of T, Q and Y-systems for AdS/
CFT
Sep 07, 2010

IPMU Annual Report 201053

Daniel Krefl (IPMU)
Instanton counting in Omega background and beyond
Sep 13, 2010
Scott Carnahan (IPMU)
Borcherds products in monstrous moonshine
Sep 14, 2010
Valeri Frolov (Alberta)
Motion of charged particles near weakly magnetized
Schwarzschild black holeSep 16, 2010
Yutaka Ookouchi (IPMU)
Cosmological Aspects in Direct Gauge Mediation
Sep 22, 2010
Vincent Desjacques (ITP Zurich)
A discrete approach to halo and galaxy clustering
Sep 24, 2010David Morrison (UC Santa Barbara/IPMU)
Quivers from Matrix Factorizations
Sep 27, 2010

Todor Milanov (IPMU)
Quasi-modular forms and Gromov–Witten theory of elliptic orbifold P1
Oct 18, 2010
Todor Milanov (IPMU)
Gromov-Witten invariants and representations of infinite dimensional Lie algebras
Oct 19, 2010
Emille Ishida (IPMU)
The expanding Universe, PCA and supernova: an attempt to avoid dark energy parameterizations
Oct 19, 2010
Rafael da Silva de Souza (IPMU)
The Magnetized Universe
Oct 21, 2010
Koji Hashimoto (Riken)
Nuclear Matrix Model
Oct 26, 2010
Brian Feldstein (IPMU)
Luminous Dark Matter
Oct 28, 2010

Robbert Dijkgraaf (Amsterdam)
Gauge theories and matrix models
Oct 01, 2010

Raphael Ponge (Tokyo)
Fefferman’s program on conformal geometry and theGreen functions of the conformal powers of the LaplacianOct 28, 2010

Domenico Orlando (IPMU)
Lectures on the Bethe Ansatz: the physical system andthe original Bethe solution for the XXX1/2 spin chain
Oct 01, 2010

Yue Shen (CfA)
Searching for binary supermassive black holes: fromtens of kpc to sub-pc scales
Nov 01, 2010

Nathan Broomhead (Leibniz)
Dimer models and noncommutative crepant resolutions
Oct 04, 2010

Ahmet Emir Gumrukcuoglu (IPMU)
Inflation, reheating and flat direction preheating
Nov 04, 2010

Alexei A. Starobinsky (Landau Inst)
Non-perturbative predictions of stochastic inflation andtheir dependence of initial conditions
Oct 07, 2010

Luca Ciotti (Bologna)
Physical processes on stellar dynamics (relaxation, dynamical friction, phase-space consistency, etc)
Nov 04, 2010

Domenico Orlando (IPMU)
Lectures on the Bethe Ansatz: the Algebraic Bethe
Ansatz for XXX1/2 spin chain
Oct 08, 2010

Luca Ciotti (Bologna)
Tidal fields, stellar escape from galaxies in clusters
Nov 05, 2010

Washington Taylor (MIT)Supergravity and string vacua in six dimensions
Oct 12, 2010David Shih (IAS)
General Gauge Mediation at the Tevatron and LHC
Oct 13, 2010
Charles Steinhardt (IPMU)
New Puzzles in Supermassive Black Hole Evolution
Oct 14, 2010
Richard Eager (UC Santa Barbara)
Quivers, Non-Commutative Geometry, and AdS/CFT
Oct 14, 2010
Yifung (Bess) Ng (Case Western Reserve U)
The magnetized universe via CMB
Oct 14, 2010

Domenico Orlando (IPMU)
Lectures on the Bethe Ansatz: the physical spectrum
for the XXX1/2 spin chain
Nov 05, 2010Davide Forcella (ENS)
Hydrodynamics, Holographic Optics and Negative
Refractive Index
Nov 09, 2010
Hitoshi Murayama (IPMU)Five Founding Questions of IPMU
Nov 11, 2010
Domenico Orlando (IPMU)
Lectures on the Bethe Ansatz: the XXZ spin chain and
the SL(2)q quantum symmetry
Nov 12, 2010
Marco Baumgartl (LMU, Munich)
D-Brane Superpotentials: A Worldsheet Perspective
Nov 15, 2010

54

IPMU Annual Report 2010

Ruben Minasian (CEA/Saclay)
String-Loop Corrections to c-a
Nov 16, 2010
Yoichi Mieda (Kyushu)
Lefschetz trace formula and the l-adic cohomology of
the Rapoport-Zink spaces
Nov 16, 2010
Tomoyuki Abe (Tokyo)
The theory of arithmetic D-modules and characteristic
cyclesNov 17, 2010
Enrico Trincherini (SISSA)
The galileon
Nov 18, 2010David Morrison (UC Santa Barbara)
Supersymmetric T 3 Fibrations
Nov 18, 2010
Alexey Bondal (IPMU/Aberdeen)
Mirror Symmetry for Minuscule Varieties
Nov 19, 2010
Domenico Orlando (IPMU)
Lectures on the Bethe Ansatz: recent developments
Nov 19, 2010
Sergei Gukov (Caltech)Surface Operators and Wall Crossing
Nov 19, 2010
Yukiko Konishi (Kyoto)
Local B-model and mixed Hodge structure
Nov 22, 2010
Atsushi Nishizawa (IPMU)
Measurement of large scale fluctuation of CMB inducedby large scale structure
Nov 25, 2010
Tomoki Nakanishi (Nagoya)Dilogarithm identities in CFT and cluster algebras
Nov 25, 2010
Tomoo Matsumura (Cornell)
Hamiltonian torus actions on orbifolds and orbifoldGKM theorem (joint work with T. Holm)
Nov 26, 2010
Osamu Iyama (Nagoya)Calabi-Yau triangulated categories and Cluster tilting
Nov 29, 2010
Scott Carnahan (IPMU)
Borcherds products in monstrous moonshine
Nov 29, 2010
Osamu Iyama (Nagoya)Calabi-Yau triangulated categories and Cluster tilting
Nov 30, 2010
Krzysztof Gawedzki (ENS-Lyon)
Gerbes and Topological Actions in Field Theory
Nov 30, 2010
Krzysztof Gawedzki (ENS-Lyon)
Global Gauge Anomalies in Two Dimensions
Dec 01, 2010
Sergey Sibiryakov (Moscow INR)
Khrono-metric model: the low-energy limit of HoravaLifshitz gravity
Dec 02, 2010

Robert Quimby (Caltech)
Charting the Transient Sky: The Palomar Transient
Factory
Dec 03, 2010
Shri Kulkarni (Caltech)
The Next Generation Transient Facility
Dec 03, 2010
Martin Elvis (CfA)
Quasar Eclipses
Dec 06, 2010
Takeo Nishinou (Tohoku)
Toric degeneration and tropical curves
Dec 06, 2010
Takamitsu Miyaji (UNAM)
Clustering of AGNs from the ROSAT All-Sky Survey
and Halo Occupation Distribution
Dec 07, 2010
Johannes Schmude (IPMU)
G-structures and calibrations in supergravity and steps
towards SUSY breaking on the conifold
Dec 07, 2010
Alexey Bondal (IPMU/Aberdeen)
Degeneration of minuscule varieties, quiver toric varieties and mirror symmetry
Dec 08, 2010
Kevin Bundy (UC Berkeley)
How are Massive Galaxies Built Over Cosmic Time?
Dec 08, 2010
Toshiyuki Kobayashi (Tokyo)
Analysis on Minimal Representations
Dec 09, 2010

Seminars

Adam Martin (Fermilab)
Boosting BSM Higgs discovery with jet substructure
Sep 09, 2010

Masahide Shimizu (Hokkaido)
Open mirror symmetry for Pfaffian Calabi-Yau manifold
Dec 09, 2010
Constantin Teleman (UC Berkeley)
Lie group actions on linear categories
Dec 13, 2010
Serge Richard (U.Lyon, Tsukuba U)
Wave operators and a topological version of Levinson’s
theorem
Dec 14, 2010
Constantin Teleman (UC Berkeley)
The structure of 2D semi-simple field theories
Dec 14, 2010
Nemanja Kaloper (UC Davis)
Levitating Dark MatterDec 15, 2010
Shigeki Matsumoto (IPMU)
Fate of the False Vacuum Revisited
Dec 16, 2010
Xi Yin (Harvard)
Higher spin gauge theory and vector models
Dec 16, 2010
Gaston Folatelli (IPMU)
Distance Precision with Type Ia Supernovae
Jan 06, 2011

IPMU Annual Report 201055

Albrecht Klemm (Bonn)
Wall-crossing holomorphic anomaly and mock modularity of multiple M5-branes
Jan 11, 2011

Elena Sorokina (Sternberg Astronomical Inst)
Supernova Explosions inside Carbon-Oxygen Circumstellar Shells
Feb 10, 2011

Fuminobu Takahashi (IPMU)
Another dark component of the Universe
Jan 13, 2011

Carsten Rott (Ohio State U)
Closing in on Dark MatterFeb 15, 2011

Andrea Ferrara (Scuda Normale Superiore, Pisa)
First Stars and their Local Relics
Jan 21, 2011

Norikazu Yamada (KEK)
Search for Walking Technicolor theory using Lattice
Feb 17, 2011

Oscar Varela (MPG)
Consistent truncations from wrapped branes, and a
Lifshitz solution
Jan 24, 2011

Ed Turner (Princeton)
The Limits of Reductionism
Feb 18, 2011

Maria J Rodriguez (MPI)
New nonspherical black holes and charged black rings
Jan 24, 2011

Hiroshi Iritani (Kyoto)
Ruan’s conjecture and integral structures in quantum
cohomology
Feb 21, 2011

Luis Ho (Carnegie Observatories)
Supermassive Black Holes in Nearby Galaxies: Insights
into Accretion and Jet Physics
Jan 24, 2011

Roger Wendell (Duke)Long and Longer Baseline Neutrino Oscillations:Searching for Symmetry Violation
Feb 22, 2011

Dongsu Bak (Seoul Nat U)
Phase Transitions in the U(1) Charged Sector of ABJM
TheoryJan 25, 2011

Scott Dodelson (Fermilab/ U Chicago)
The Dark Sector vs. Modified Gravity
Feb 23, 2011

Dmitry Kaledin (Steklov)
Witt vectors as a polynomial functor
Jan 31, 2011
Kwokwai Chan (IPMU)
Mirror symmetry for toric Calabi-Yau manifolds fromthe SYZ viewpoint
Jan 31, 2011
Melina Bersten (IPMU)
Comparing Hydrodynamic Models with Observationsof Type II Plateau Supernovae
Feb 01, 2011
Kazuyuki Furuuchi (NCTS Hsinchu)
D-branes Wrapped on Fuzzy del Pezzo Surfaces
Feb 01, 2011
Stefano Liberati (SISSA)
Quantum Gravity phenomenology: achievements andchallenges
Feb 03, 2011
Kwokwai Chan (IPMU)
The SYZ picture of mirror symmetry
Feb 04, 2011
Yoonbai Kim (Sungkyunkwan U)
Fluxes and BPS Vortices in ABJM model
Feb 08, 2011
Luc Dessart (Lab d’Astrophysique de Marseille)
Core-collapse supernovae: Cosmological probes andastrophysical laboratories for stellar evolution and explosion
Feb 09, 2011

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IPMU Annual Report 2010

Yusei Koyama (Tokyo)
Panoramic mapping of star formation in and arounddistant clusters of galaxies
Feb 24, 2011
Michel Granger (Univ d’Angers)
Linear free divisors and quivers
Feb 28, 2011
Yuji Tachikawa (IPMU)
6 = 4+2
Mar 01, 2011
Hajime Sugai (Kyoto)
Active galaxies observed with integral field spectroscopy
Mar 03, 2011

JFY2010
April 5–6
Workshop on Recent Advances in Mathematics at IPMU 2

November 15
Workshop on Population III Gamma-Ray Burst

April 28–29
Mini-Workshop on Cosmic Dust

December 1
The 4-th Meeting of OMEG Institute “Supernova
Explosions and Nucleosynthesis”

June 28–July 2
CL J2010: from Massive Galaxy Formation to Dark Energy

Ezequiel Treister (Hawaii)Super-massive Black Holes Across the Cosmic History
Mar 04, 2011

July 13
IDEAS (IPMU Day of Extragalactic Astrophysics
Seminars)on Chemical Evolution

Takuya Okuda (Tokyo)
Exact results for ’t Hooft loops in supersymmetricgauge theories
Mar 08, 2011

August 4–5
Workshop “Galaxy and Cosmology with Thirty Meter
Telescope(TMT)”

Shinobu Hosono (Tokyo)
Mirror symmetry and projective geometry of Reye congruences
Mar 10, 2011
Kentaro Hori (IPMU)
Motivation and Application of Recent Development inSupersymmetric Gauge Theories
Mar 10, 2011
Eibun Senaha (NCTS)
Electroweak baryogenesis in the MSSM revisited
Mar 31, 2011

Conferences

Luis Ho (Carnegie Observatories)
Coevolution of Black Holes and Galaxies: Recent Developments
Jan 26, 20119 Conferences

December 9–10
PFS (Prime Focus Spectrograph) Science Workshop
February7–8, 2011
Workshop on Geometry and Analysis of DiscriminantsFebruary 24
Workshop “Log Hodge Theory and Elliptic Flat Invariants”
February 21–25
IPMU Workshop on Black Holes

September 9–10
Subaru Future Instrumentation Workshop
September 27–October 1
Horiba International Conference COSMO/CosPA 2010
October 4–8
Focus Week: String Cosmology
October 25–28
Workshop “Evolution of Massive Galaxies and Their
AGNs with SDSS-III/BOSS Survey”
November 8–11
Mini Workshop on Neutrinos

IPMU Annual Report 201057

(including seminars given outside IPMU)

JFY2010
Seminar at SITP
(2010.04.13 - 05.02, Stanford University)
Simeon Hellerman
Cosmology and the large-D Matrix Model
Seminar at University of Kentucky(2010.04.07 - 04.10, Lexington, Kentucky)
Simeon Hellerman
A Universal Inequality for CFT and Quantum Gravity
Seminar at Hsinchu University(2010.04, Hsinchu, Taiwan)
Domenico Orlando
What is the next number in the sequence?
Theoretical AstroPhysics Including Relativity(TAPIR) Seminar(2010.04.12, Caltech, Pasadena) Mark Vagins
GADZOOKS! Supernova Neutrinos Without theAnnoying Wait
Colloquium at National Taiwan University(2010.04.13, Taipei, Taiwan)
Chuan-Ren Chen
Recent Excitements in Particle Physics: LHC & Dark
MatterSeminar at National Taiwan University(2010.04, Taipei, Taiwan)
Susanne Reffert
From Random Walks to non-Lorentz Invariant Field
Theories
Strings at the LHC and in the Early Universe(2010.04.17 - 05.07, KITP, Santa Barbara)
Taizan Watari
GUT’s and Strings
Deciphering the Ancient Universe with Gamma-Ray
Bursts(2010.04.19 - 04.23, Kyoto)
Masahiro Takada
Hyper Suprime-Cam Survey
Ken’ichi Nomoto
Diversity of Supernovae and Its Relation to First Stars
and GRBs
Seminar at IAS(2010.04.23, Princeton)
Matthew Sudano
General Gauge Mediation with Gauge Messengers
Opening Meeting of the Program: Perspectives inDeformation Quantization and Noncommutative Geometry(2010.06.26 - 06.28, RIMS, Kyoto)
Kentaro Hori
String theory and K-theory
Berkeley String Theory Seminar(2010.04.27 - 04.28, UC Berkeley)
Simeon Hellerman
Dynamical Cobordisms in General Relativity andString Theory

58

IPMU Annual Report 2010

KITP Theory Seminar(2010.04.29 - 04.30, Kavli Institute for Theoretical Physics,
UCSB)
Simeon Hellerman
A Universal Inequality for CFT and Quantum Gravity
ESI program on Quantum Field Theory on Curved Spacetimes and Curved Target Spaces(2010.04.29, Erwin Schrödinger Institute, Vienna)
Tadashi Takayanagi
Holographic Entanglement Entropy
Seminar at LBL/Berkeley(2010.04, Berkeley)
Jing Shu
Thinking about Tevatron Anomalies
Seminar at Cornell University(2010.04, Ithaca, New York)
Jing Shu
New (theoretical) Ideas in Dark Matter
Seminar at UC Irvine(2010.04, Irvine)
Jing Shu
New (theoretical) Ideas in Dark Matter
Seminar at UC Berkeley(2010.04, Berkeley)
Jing Shu
New (theoretical) Ideas in Dark Matter
Conference on Interplay between Representation Theory
and Geometry(2010.05.03 - 07, Tsinghua University, Beijing)
Kentaro Hori
D-branes and Categories
Conference in honor of Claus Ringel and Kyoji Saito(2010.05.05, Xinhoa university, Beijing)
Kyoji Saito
The lattice of vanishing cyceles of types A 12 ∞ and D 12 ∞PHENO 2010(2010.05.10 - 05.12, Madison, Wisconsin)
Chuan-Ren Chen
Higgs scenario from Peccei-Quinn mechanism at the
LHC
Won Sang Cho
New particle mass spectrometry at the LHC
2nd Holographic Cosmology Workshop(2010.05.10 - 05.11, McGill University)
Shinji Mukohyama
Cosmology with Gravity in the Higgs phase
Seminar at Tohoku University(2010.05.10, Sendai)
Fuminobu Takahashi
Axion in the sky and at the LHC
Astronomy with Megastructures(2010.05.10 - 14, Greece)
Masami Ouchi
Galaxy Formation and Young Universe II

CITA@25/Bond@60(2010.05.12 - 05.16, CITA, Toronto)
Shinji Mukohyama
Cosmological implications of gravity at a Lifshitz point

Seminar at Johns Hopkins University(2010.05, Baltimore, Maryland)
Jing Shu
New (theoretical) Ideas in Dark Matter

Seminar at Kyoto University(2010.05.12, Kyoto)
Fuminobu Takahashi
Axion from Cosmology and Collider Experiments

Seminar at University of Maryland(2010.05, College Park, Maryland)
Jing Shu
Thinking about Tevatron Anomalies

Seminar at Tohoku University(2010.05.13, Sendai)
Matthew Sudano
General Gauge Mediation with Gauge Messengers

Arithmetic geometry workshop 2010(2010.05, Okinawa)
Satoshi Kondo
On the product structures of motivic cohomology
theories

Seminar at Fermilab Theoretical Astrophysics group(2010.05.14, Fermilab)
Masahiro Takada
Subaru Weak Lens Study of X-ray Luminous Clusters
IEU-APCTP Workshop: Cosmology and Fundamental
Physics(2010.05.16 - 05.19, IEU, Ewha Womans Univ, Korea)
Tsz Yan Lam
Primordial non-Gaussianity and Large-scale structure
Seong Chan Park
Split UED and Dark Matter
Institute for the Early Universe Inaugural Workshop(2010.05.17, Seoul)
Hitoshi Murayama
Cosmology at IPMU
CERN Academic Training Lecture Committee(2010.05.25, Geneva)
Hitoshi Murayama
Lepto and baryogenesis
APS DAMOP session on Early Universe(2010.05.26, Houston, Texas)
Naoki Yoshida
Primordial gas chemistry in the early universe
Planck 2010(2010.5.31 - 06.04, CERN)
Mihoko M. Nojiri
On weighting the superpartners at the “early stage” of
LHC
Seong Chan Park
Kaluza-Klein Dark Matter
Fuminobu Takahashi
Probing Variant Axion Models at LHC
Brian Feldstein
Discoverying Asymmetric Dark Matter with AntiNeutrinos
Hitoshi Murayama
Dark Matter and Dark Energy from Topology
Workshop on Geometry and Physics of the LandauGinzburg Model(2010.05.31 - 06.04, Institut Fourier, Grenoble)
Kentaro Hori
Gauged Landau-Ginzburg models
Kyoji Saito
Primitive forms of types A 12 ∞ and D 12 ∞Memorial lecture in honor of Andrjzej Jankovski(2010.05.31, Gdansk, Poland)Alexey Bondal
Derived categories of coherent sheaves on algebraic
varieties

Eurostrings(2010.06, Madrid)
Domenico Orlando
Warped anti-de Sitter spaces in String Theory
Susanne Reffert
Relating Supersymmetric Gauge Theories via Gauge/
Bethe Correspondence
KMI workshop on particle physics and cosmology(2010.06.04, Kobayashi-Maskawa Inst for the Origin ofParticles and the Universe (KMI), Nagoya)
Masahiro Takada
Recent progresses in gravitational lensing studies
QFT, String Theory & Mathematical Physics(2010.06.07 - 08.13, KITP, Beijing)
Minxin Huang
Top quarks as a window to string resonances
Oort Workshop(2011.06.07 - 10, Oort, Netherlands)
Masami Ouchi
Escape Fraction and the Reionization History
Long-term Workshop on “Gravity and Cosmology(GC2010)”(2010.6.07 - 06.11, YITP, Kyoto)
Shigeki Sugimoto
Mesons as Open Strings in a Holographic Dual of QCD

Conference Talks

10 Conference Talks

CMB Workshop 2010(2010.6.07 - 06.09, NAOJ, Mitaka, Tokyo)
Masahiro Takada
Gravtational lensing and CMB
Shinji Mukohyama
CMB and ultra high-energy physics
NEB 14: Recent Developments in Gravity(2010.6.08 - 06.11, Ioannina, Greece)
Cosimo Bambi
Violation of the Carter-Israel conjecture and its
astrophysical implications
Physics at LHC 2010(2010.06.08, Hamburg)
Hitoshi Murayama
Theory of Beyond the Standard Model Physics
Cosmo Coffee(2010.06.09, CERN)
Fuminobu Takahashi
Dark Matter and Split Seesaw

IPMU Annual Report 201059

Seminar at Academia Sinica(2010.06.10, Taipei)
Chuan-Ren Chen
The variant axion models at the LHC
The First Galaxies, Quasars & Gamma-Ray Bursts(2010.06.14 - 16, USA)
Masami Ouchi
Statistics of 207 Lya Emitters at z-7
Workshop: Geometry, Quantum Fields, and Strings:
Categorical Aspects(2010.06.07-11, Mathematisches Forschungsinstitut
Oberwolfach, Oberwolfach, Germany)
Kentaro Hori
D-branes, T-duality, and Index theory, part II
Seminar at Riken(2010.06.14, Riken, Japan)
Tadashi Takayanagi
Mini Black Holes and Quantum Quench from AdS/
CFT
Seminar at Titec(2010.06.16, Tokyo)
Shigeki Sugimoto
Mesons as Open Strings in a Holographic Dual of QCD
Seminar at Tubingen University(2010.06.16, Tubingen, Germany)
Hitoshi Murayama
Why go beyond the Standard Model?
Neutrino 2010(2010.06.19, Athens, Greece)
Mark Vagins
Detection of Supernova Neutrinos
Algebra and Geometry of Configuration Spaces and related
structures(2010.06.21 - 06.25, Centro de Ricerca Matematica Ennio
De Giorgi, Pisa, Italy)
Toshitake Kohno
Quantum representations of mapping class groups andtheir images
Seminar at University of Tokyo(2010.06.21, Hongo, Tokyo)
Tadashi Takayanagi
Mini Black Holes and Quantum Quench from AdS/
CFT
Seminar at Tokyo Institute of Technology(2010.06.23, Tokyo)
Tadashi Takayanagi
Mini Black Holes and Quantum Quench from AdS/
CFTWorkshop on D-branes, Effective Actions and Homological
Mirror Symmetry(2010.06.23, Erwin Schrödinger Institute, Vienna)
Johanna Knapp
Normal Functions, Superpotentials and Mirror
Symmetry

60

IPMU Annual Report 2010

Seminar at SISSA(2010.06.24, SISSA, Trieste, Italy)
Cosimo Bambi
Testing strong gravity with future VLBI observations
IAP Annual Colloquium: Progenitors and environments ofstellar explosions(2010.06.28 - 07.02, Institut d’ Astrophysique de Paris)
Masaomi Tanaka
Spectropolarimetry of Type Ib/c Supernovae
Keiichi Maeda
Observational Diagnostics of Asymmetry in type Ia
supernovae, and implications for progenitors andcosmology
Ken’ichi Nomoto
Unusual supernovae and their progenitors
Topics in Resurgence Theory(2010.06.28 - 07.02, Kyoto)
Alexander Getmanenko
Towards constructing resurgent solutions of a linear
ODE
New Mathematical Methods in Quantum Gauge Theories(2010.06.28 - 07.24, Aspen Center for Physics)
Hirosi Ooguri
Wall Crossing As Seen By M-Theory And Matrix
ModelsYKIS2010 symposium: Cosmology – The Next
Generation–(2010.06.28, YITP, Kyoto)
Tadashi Takayanagi
Time-dependent Holography and Emergent Black
Holes on D-branes
Fuminobu Takahashi
Chaotic Inflation with Running Kinetic Term
Seminar at Osaka University(2010.06.30, Osaka)
Tadashi Takayanagi
Mini Black Holes and Quantum Quench from AdS/
CFT
Frontier Physics Working Month(2010.07, Beijing and Shanghai)
Jing Shu
Top Forward-backward Asymmetry
Seminar at Nagoya GCOE
(2010.07, Nagoya)
Susanne Reffert
From Random Walks to non-Lorentz Invariant Field
Theories
CLJ2010+0628: from massive galaxy formation todark energy(2010.07.01, IPMU)
Masayuki Tanaka
Environmental dependence of galaxy properties at z >1.5
Seminar at Nagoya University(2010.07, Nagoya)
Domenico Orlando
What is the next number in the sequence?
Lecture at Summer School on Mathematical String Theory(2010.07.01, Virginia Tech, Blackburg, Virginia)
Cornelius Schmidt-Colinet
The vacuum amplitude of the bosonic string

Workshop on Low Energy Neutrinos at DeepCore(2010.07.01 - 07.02, Penn State)
Sourav K. Mandal
Dark Matter in DeepCore: Complementary Uses ofTrack-like and Cascade Events
Seminar at Hokkaido University(2010.07.02, Sapporo, Japan)
Tadashi Takayanagi
Artificial Black Holes on D-branes in AdS and Nonequilibrium Systems
Hadron square(2010.07.03, Kyoto University)
Shigeki Sugimoto
Mesons as Open Strings in a Holographic Dual of QCD
Santa-Fe 2010, Los Alamos National Lab(2010.07.04 - 07.09, Santa Fe, New Mexico)
Seong Chan Park
Split UED
Novel Searches for Dark Matter with Neutrino Telescopes(2010.07.05 - 07.06, CCAPP, Ohio)
Sourav K. Mandal
Extrasolar Dark Matter Detection andCharacterization in DeepCore
19th International Conference on General Relativity andGravitation(2010.07.05 - 07.09, Mexico City)
Cosimo Bambi
Violation of the Carter-Israel conjecture and its
astrophysical implications
3rd workshop, Vacuum structure and quark dynamics
based on QCD(2010.07.07, Tsukuba University, Japan)
Shigeki Sugimoto
Analysis of QCD via superstring theory
Experimental Search for Quantum Gravity(2010.07.12 - 07.16, Stockholm)
Cosimo Bambi
Searching for quantum gravity effects in astrophysicalblack hole candidates
Seminar at Max-Planck-Institut fur Astrophysik(2010.07.13, MPA, Garching, Germany)
Ken’ichi Nomoto
The evolution and explosion of mass-accreting Pop III
stars
IDEAS2010(2010.07.13, IPMU)
Mark Vagins
GADZOOKS! Supernova Neutrinos Without theAnnoying Wait
The 11th Symposium on Nuclei in the Cosmos(2010.07.19 - 23, Heidelberg)
Ken’ichi Nomoto
Hypernovae and gamma-ray bursts
COSPAR Probing the High Redshift Universe(2010.07.20, Bremen, Germany)
Naoki YoshidaStar formation in the early universe
NAOJ, Theoretical Astrophysics Colloquium(2010.07.21, NAOJ, Mitaka, Tokyo)
Keiichi Maeda
The explosion mechanism of type Ia supernovae andthe origin of their observational diversity

YITP seminar(2010.07.22, YITP, Kyoto)
Keiichi Maeda
Toward a unified picture of type Ia supernovae
What Drives the Growth of Black Holes?
(2010.07.26 - 07.29, Durham)
John Silverman
Co-evolving AGN activity and star formation within thezCOSMOS density fieldPhysics of Accreating Compact Binaries(2010.07.26 - 07.30, Kyoto)
Masaomi Tanaka
Super-Chandrasekhar Mass White Dwarf as an Originof Extremely Luminous Type Ia Supernovae
Keiichi Maeda
A new insight into type Ia supernova explosions andimplications for the progenitor evolution
Ken’ichi Nomoto
Progenitors of Type Ia SupernovaeHigh Energy Strong Interactions 2010(2010.07.27, YITP, Kyoto)
Shigeki Sugimoto
Hadrons in Holographic QCD
Kobayashi-Maskawa Institute Seminar(2010.07.28, KMI, Nagoya)Tadashi Takayanagi
Quantum Gravity explored by entanglement entropy
Bonji seminar at KMI(2010.07.29, KMI, Nagoya)
Shigeki Sugimoto
Mesons as Open Strings
Seminar at Hokkaido University(2010.07.30, Sapporo, Japan)
Daniel Krefl
Instanton counting in Omega backgroundWorkshop on Arithmetic Geometry 2010(2010.08.02 - 08.07, Okinawa, Japan)
Satoshi Kondo
On the product structure of motivic cohomology
theories

Conference Talks

Gravity and Cosmology 2010(2010.06.10 - 15, YITP, Kyoto)
Tadashi Takayanagi
Mini Black Holes and Quantum Quench from AdS/
CFT
Shinji Mukohyama
Cosmological implications of gravity at a Lifshitz point

Summer School on Astronomy & Astrophysics 2010(2010.08.03, Toyohashi, Japan)
Shinji Mukohyama
String theory and brane inflation
Summer Institute 2010(2010.08.04 - 08.14, Fuji-Yoshida, Japan)
Cosimo Bambi
Probing the space-time around astrophysical black holecandidates with future VBLI experiments
Tadashi Takayanagi
Introduction to AdS/CMT
Domenico Orlando
Relating Gauge Theories via Gauge/Bethe
Correspondence
Seong Chan Park
Kaluza-Klein Dark Matter
Fuminobu Takahashi
Running Kinetic Inflation
Susanne Reffert
Relating Supersymmetric Gauge Theories via Gauge/
Bethe Correspondence

IPMU Annual Report 201061

Wakate Summer School(2010.08.06 - 08.07, Kishimadaira, Japan)
Tadashi Takayanagi
Lectures on AdS/CFT
Aspen workshop: Taking Supernova Cosmology into the
Next Decade(2010.08.09 - 20, Aspen, Colorado)
Ken’ichi Nomoto
Progenitors theory
Seminar at Hirosaki University(2010.08.10, Hirosaki, Japan)
Masahiro Takada
Subaru Weak Lensing Study of Galaxy Clusters
SLAC Summer Institute(2010.08.12 - 13, SLAC)Mark Vagins
Atmospheric Neutrinos
The 4th International Conference on Representation
Theory(2010.08.13, Xian, China)
Kyoji Saito
Highest weight representation of Elliptic Lie AlgebrasInternational conference and summer school on LHC
physics(2010.08.16 - 08.25, Tsinghua university, China)
Jing Shu
New Physics from the 3rd generation?
Jing Shu
Looking for New Physics in the 3rd Generation
ESI Programme on AdS Holography and the Quark-Gluon
Plasma(2010.08.17, ESI, Geneva)
Shigeki Sugimoto
Mesons as open strings in holographic QCD
APCTP Focus Program Aspects of Holography andGauge/string duality(2010.08.17 - 08.18, APCTP, Pohang, Korea)
Tadashi Takayanagi
Emergent Horizons on D-branes and Quantum Quench
from AdS/CFT
Tadashi Takayanagi
Topological Insulators and Superconductors from
String Theory
NAOJ Symposium(2010.08.19, NAOJ, Mitaka, Tokyo)
Hitoshi Murayama
Status of SuMIRe project
SUSY 2010(2010.08.23 - 08.28, University of Bonn)
Won Sang Cho
New Particle Mass Spectrometry at the LHC :M_CT2 for boosted decay systems
Mirror symmetry and differential equations(2010.08.24, Tokyo Metropolitan University, Tokyo)
Sergey Galkin(Mirror) modularity of Fano threefolds

62

IPMU Annual Report 2010

DENET Dark Energy Summer School(2010.08.30 - 09.01, Kochi University of Technology,
Japan)
Masahiro Takada
The impact of massive neutrino on spherical collapse
modelInternational Neutrino Summer School(2010.08, KEK)
Takaaki Kajita
Experiments with atmospheric neutrinos
Aspects of multiple zeta values(2010.09.06 - 09.10, RIMS, Kyoto University)
Toshitake Kohno
Gauss-Manin connections for the space of conformal
blocksSubaru Future Instrumentation Workshop(2010.09.09 - 09.10, IPMU)
Keiichi Maeda
Supernova explosion mechanism probed by latetime
NIR spectroscopy with AO
Masayuki Tanaka
From SDSS to PFS; a statistical study of galaxy
evolution
JPS fall meeting(2010.09.11 - 09.14, Kyushu kogyo University, Japan)
Fuminobu Takahashi
Dark Matter from Split Seesaw
Shigeki Sugimoto
Quark Confinement and Chiral Symmetry from String
TheoryNu TheME: Neutrino Theory, Models, and Experimental
Perspective(2010.09.15, Geneva)
Hitoshi Murayama
Perspective Talk in Neutrino Physics
Workshop: Observational signatures of type Ia supernova
progenitors(2010.09.20 - 24, Lorentz Center, Leiden, Netherlands)
Ken’ichi Nomoto
Single degenerate progenitor models
Workshop on Topologies for Early LHC Searches(2010.09.22 - 09.25, SLAC)
Mihoko M. Nojiri
Class of Models with Jets+MET, Kinematics, Branches
and Interactions
International Conference Japan-Mexico on Topology andits Applications(2010.09.27 - 10.01, Colima University, Mexico)
Toshitake Kohno
Quantum representations of mapping class groups
COSMO/CosPA2010(2010.09.27 - 10.01, Tokyo)
Shinji Mukohyama
Cosmological implications of gravity at a Lifshitz point
Fuminobu Takahashi
Higgs inflation with a running kinetic term
Chuan-Ren Chen
The variant axion models at the LHC
Emir Gumrukcuoglu
Signature from Anisotropic Inflation

Seminar at The Dark Cosmology Centre(2010.09.30, The Dark Cosmology Centre, Copenhagen)
Ken’ichi Nomoto
The Evolution and Explosion of First Stars
KIAS workshop on flavor physics and CP violation(2010.09, Seoul)
Jing Shu
Top Forward-backward Asymmetry
Neutrino oscillation workshop 2010(2010.09, Conca Specchiulla, Italy)
Takaaki Kajita
Recent results from atmospheric neutrino experiments
Seminar at UC Davis(2010.09, Davis, California)
Won Sang Cho
New particle mass spectrometry at the LHC
Japan Mathematical Society(2010.09, Nagoya University)
Satoshi Kondo
On the product structures on motivic cohomology
Arithmetic goemetry and p-adic Sato theory(2010.09, Tohoku University, Sendai)
Satoshi Kondo
Survey on θ and τ by Anderson I, II
Phenomenological ALMA-Subaru Workshop 2010(2010.10.01, NAOJ)
Masayuki Tanaka
Galaxy formation in forming clusters
Lecture series at University of Tokyo(2010.10 - 11, Hongo, Tokyo)
Domenico Orlando
Lectures on the Bethe Ansatz
Thirty Meter Telescope (TMT) workshop(2010.10.04 - 10.05, NAOJ, Mitaka, Tokyo)
Masaomi Tanaka
Spectropolarimetry of Supernovae: Prospects for TMT
Keiichi Maeda
Supernova observations with TMTThe Observational Pursuit of Dark Energy after Astro2010(2010.10.07 - 10.08, Caltech, Pasadena)
Masahiro Takada
panel discussion: Astro2010 and ground-based issues(as a panelist)
Masahiro Takada
Cosmology with SuMIRe HSC/PFS
Autumn Symposium on String/M Theory(2010.10.14 - 10.17, KIAS, Korea)
Tadashi Takayanagi
Black Holes and Holographic Quantum Quench
Domenico Orlando
What is the next number in the sequence? (or,Sublattice counting and orbifolds)
Theoretical Physics Seminar at Hokkaido University(2010.10.15, Sapporo, Japan)
Johanna Knapp
Global SO(10) F-theory GUTs
Theoretical Physics Seminar at KEK(2010.10.19, KEK)
Johanna Knapp
Global SO(10) F-theory GUTs

The US/Japan HEP Collaboration 30th Anniversary
Symposium(2010.10.21, Hawaii)
Hitoshi Murayama
Physics Prospect
Kinosaki Symposium of Algebraic geometry(2010.10.25, Kinosaki, Japan)
Kyoji Saito
Limit partition functions associated with Cancellative
monoids
BOSS Evolution of Massive Galaxies and AGN Workshop(2010.10.26 - 10.27, IPMU)
Masayuki Tanaka
A new method to identify AGNs
Masayuki Tanaka
BOSS spectrophotometry
New Development of Numerical Simulations in LowDimensional Quantum Systems(2010.10.27 - 10.29, YITP, Kyoto)
Tadashi Takayanagi
Geometric Calculation of Entanglement Entropy via
AdS/CFTYITP Lecture series(2010.10.27 - 10.28, YITP, Kyoto)
Tadashi Takayanagi
AdS/CFT from condensed matter viewpoints
Seminar at Max Planck Institute(2010.10.28, MPP)
Fuminobu Takahashi
A theory of extra radiation in the Universe
Seminar at Technical University of Munich(2010.10.29, TUM, Germany)
Fuminobu Takahashi
A theory of extra radiaion in the Universe
Colloquim at Kyoto University(2010.10.29, Kyoto)
Charles Steinhardt
New Puzzles in Supermassive Black Hole Evolution

Conference Talks

ESI Programme on AdS Holography and the Quark-Gluon
Plasma(2010.08.02 - 10.29, Erwin Schrödinger Intitute, Vienna)
Shigeki Sugimoto
Hadrons in Holographic QCD
Shigeki Sugimoto
Mesons as open strings in holographic QCD

2010 Workshop on Major DUSEL Physics Topics(2010.10, Rapid City, USA)
Takaaki Kajita
Results from atmospheric Neutrino experiments andfuture prospects
The special values of L-function and arithmetic geometry(2010.10, Miyama, Kyoto)
Satoshi Kondo
On a formula expressing the local L and e factors in
Hecke eigenvalues
AdS/CM duality and other approaches(2010.11.01 - 11.05, KITPC, Beijing)
Tadashi Takayanagi
Entanglement Entropy and Quantum Quenches in
AdS/CFT
Topical Workshop in Low Radioactivity Techniques(2010.10, Sudbury, Canada)
M. Nakahata
Asian facilities
Conference on Real Singularities(2010.11.01, RIMS, Kyoto)
Kyoji Saito
Singularities of the transcendental functions of types
A 12 ∞ and D 12 ∞IPMU Annual Report 201063

International Workshop on Dark Matter, Dark Energy
and Matter-antimatter Asymmetry(2010.11.05 - 11.06, Hsinchu, Taiwan)
Chuan-Ren Chen
Model Independent Studies of Dark Matter
Theory Seminar at UBC(2010.11.08, UBC, Vancouver)
Cosimo Bambi
Measuring the spin parameter of astrophysical blackhole candidates
ExDiP2010(2010.11.09, KEK)
Shinji Mukohyama
Viability of Horava-Lifshitz theory
Cosmology seminar at SFU(2010.11.09, Simon Fraser University, Canada)
Cosimo Bambi
Accretion process in Kerr space-time with arbitraryvalue of the spin parameter
Seminar in Relativity at UT Austin(2010.11.12, Austin, Texas)
Cosimo Bambi
Constraining the quadrupole moment of black holecandidates through the continuum fitting method
Seminar at LSU(2010.11.15, Baton Rouge, Louisiana)
Cosimo Bambi
Constraining the quadrupole moment of astrophysicalblack hole candidates through the continuum fitting
methodSeminar at NCTS
(2010.11.17, NCTS, Taiwan)
Shigeki Matsumoto
Fate of False Vacuum Revisited
Workshop on Beyond Standard Models and the Dark
Sides of Our Universe(2010.11.18 - 11.20, Shanghai)
Chuan-Ren Chen
Cosmic-ray from decaying dark matter
Seminar at University of Tokyo(2010.11.22, Hongo, Tokyo)
Shigeki Sugimoto
Mesons as Open Strings
ASH: Astronomy of Supernovae and Hypernovae(2010.11.23 - 11.25, University of Iceland, Iceland)
Keiichi Maeda
Asymmetry in supernova explosions and theirobservational diversities
Seminar at Academia Sinica(2010.11.26, Academia Sinica, Taiwan)
Shigeki Matsumoto
Fate of False Vacuum Revisited
Conference on Lattices, Reflection groups and Algebraic
Geometry(2010.11.26, Nagoya)
Kyoji Saito
Reflection groups of type A 12 ∞ and D 12 ∞64

IPMU Annual Report 2010

Seminar at Tokyo Metropolitan University(2010.11.26, Tokyo)
Todor Milanov
Simple singularities and representations of affine Liealgebras
Seminar at Saitama Institute of Technokogy(2010.11.26, SIT, Saitama, Japan)
Emir Gumrukcuoglu
Inflation, reheating and fate of flat directions
Seminar at University of Michigan(2010.11.29, Ann Arbor, Michigan)
Cosimo Bambi
Testing Astrophysical Black Holes
Lecture Series at University of Tokyo(2010.11.30 - 12.01, Komaba, Tokyo)
Shigeki Sugimoto
QCD and string theory
LC10(2010.11.30 - 12.03, INFN - Frascati, Italy)
Shigeki Matsumoto
Dark Matter wants the Linear Collider
Seminar at University of Toronto(2010.11, Toronto)
Brian Feldstein
Form Factor Dark Matter
International Workshop in Flavor Physics in the LHC Era(2010.11, Singapore)
Takaaki Kajita
Neutrino Oscillation Experiments
Theory Seminar at Columbia University(2010.12.06, Columbia University)
Tsz Yan Lam
Primoridal non-Gaussianity and large-scale structure
Focus Program: Frontiers of Black Hole Physics(2010.12.07 - 09, APCTP, Korea)
Shinji Mukohyama
Cosmology and black holes in ghost condensate
Shinji Mukohyama
Status of Horava-Lifshitz gravity

SPICA Science Workshop 2010(2010.12.16 - 12.17, NAOJ, Mitaka, Tokyo)
Masaomi Tanaka
Observations of Supernova Dust with SPICA
Tomoki Saito
Exploring the frontier of redshifted & obscured
galaxies with SPICA/MIR
Lecture Series at Titech(2010.12.13 - 12.22, Tokyo)
Shigeki Matsumoto (2010.12.13, 12.14)
WIMP Dark Matter and Cosmic-ray observatios
Tadashi Takayanagi (2010.12.20, 12.22)
AdS/CFT from condensed matter viewpoints
Lecture Series and Colloquium at University of Tokyo(2010.12.14 - 12.15, Komaba, Tokyo)
Shigeki Sugimoto
QCD and string theory
Seminar at University of Tokyo(2010.12.20, Hongo, Tokyo)
Shigeki Matsumoto
Fate of False Vacuum Revisited
Lecture series at University of Technology in Vienna(2010.12.20 - 12.22, 2011.01.10 - 01.12, Vienna, Austria)
Johanna Knapp
String Theory I
Astro-H workshop(2010.12.27, Tokyo University of Science, Tokyo)
Keiichi Maeda
Supernova Explosions and Nucleosynthesis
Masahiro Takada
Cluster physics with Astro-H and Subaru HSC surveys
Seminar at Max Planck Institute(2010.12, Munich)Susanne Reffert
Relating Supersymmetric Gauge Theories via Gauge/
Bethe Correspondence
String theory seminar(2010.12, Universita di Roma II “Tor Vergata”,Rome)
Susanne Reffert
Relating Supersymmetric Gauge Theories via Gauge/
Bethe Correspondence

2010 Topical Program at NCTS
(2010.12.08 - 12.10, NCTS, Taiwan)
Shigeki MatsumotoComprehensive Analysis on the Light Higgs Scenario in
NUHM
Chuan-Ren Chen
Top quarks as a probe of heavy resonances at the LHC

String Theory Seminar(2010.12,Universita degli Studi di Napoli Federico II,
Napoli)
Susanne Reffert
Relating Supersymmetric Gauge Theories via Gauge/
Bethe Correspondence

PFS science workshop(2010.12.09 - 12.10, NAOJ, Mitaka, Tokyo)
Masahiro Takada
Cosmology with SuMIRe HSC/PFS surveys
Hitoshi Murayama
PFS updates

Integrable systems, random matrices, algebraic geometry
and geometric invariants(2010.12, Kyoto University)
Satoshi Kondo
Expressions of local L and e factors in Hecke
eigenvalues

Second Latin Congress on Symmetries in Geometry andPhysics(2010.12.13 - 12.17, Universidade Federal do Parana,
Brazil)Sergey Galkin(Two constructions for) Mirrors of Fano varieties

Cosmology and String Theory program(2011.01.03 - 08.31, Institute for Advanced Studies Hong Kong)
Emille E. O. Ishida
Supernova Cosmology - observations and data analysis
Rafael de Souza
Exploring the cosmic dawn, the first light after dark
ages
KIPAC Seminar(2011.01.04, KIPAC, Stanford University)
Charles Steinhardt
New Puzzles in Supermassive Black Hole Evolution

Indian Strings Meeting(2011.01.04 - 01.11, Puri, India)
Tadashi Takayanagi
Holographic Entanglement Entropy and Black Holes
Field theory and quantum gravity(2011.01.05, Rikkyo University, Japan)
Shinji Mukohyama
Status of Horava-Lifshitz gravity
Japan-Vietnam Bilateral Program(2011.01.05, Tohoku University, Sendai)
Kyoji Saito
Spectral decomposition of the Coxeter elementsof types A 12 ∞and D 12 ∞Niigata Winter Workshop 2011
(2011.01.06 - 01.08, Echigo-Yuzawa, Japan)
Shigeki Matsumoto
Fate of False Vacuum Revisited
TAPIR Seminar(2011.01.07, Caltech)Charles Steinhardt
New Puzzles in Supermassive Black Hole Evolution
Physics Beyond the Standard Model and Predictable
Observables(2011.01.07, Kobe University, Japan)
Shinji Mukohyama
Status of Horava-Lifshitz gravity
Seminar at NAOJ
(2011.01.07, Mitaka, Tokyo)
Hitoshi Murayama
Trends in Particle Physics, DUSEL/LHC
Lecture Series at Waseda University(2011.01.12, 01.19, 01.26, Tokyo)
Shinji Mukohyama
Gravitation and Cosmology
Fields and Strings Seminar(2011.01.13, LMU, Munich)
Johanna Knapp
Construction of Global F-theory GUTs

Conference Talks

The 4th KIAS Workshop “Cosmology and Structure
Formation”(2010.11.03 - 11.06, KIAS, Korea)
Masahiro Takada
Subaru Weak Lensing Studies of X-ray Luminous
Clusters

CIMPA-Vietnam School and Workshop on Braids in
Algebra, Geometry and Topology(2011.01.17 - 01.28, Institute of Mathematics, Hanoi,
Vietnam)Toshitake Kohno
Braid groups, configuration spaces and iterated
integrals
Seminar at Drexel University(2011.01.17, Philadelphia)
Charles Steinhardt
New Puzzles in Supermassive Black Hole Evolution
Subaru Users’ Meeting 2010(2011.01.19 - 01.20, NAOJ, Mitaka, Tokyo)
Masahiro Takada
Cosmology with SuMIRe HSC/PFS surveys
Hitoshi Murayama
PFS Overview
Wunch Seminar(2011.01.19, Princeton University)
Charles Steinhardt
New Puzzles in Supermassive Black Hole Evolution
Japan-France Advanced Science Symposium (JFFoS)(2011.01.21, Tokyo)
Hitoshi Murayama
Dark Energy

IPMU Annual Report 201065

Seminar at University of Tokyo(2011.01.24, Hongo, Tokyo)
Matthew Sudano
Non-Renormalization Theorems and D-term SUSY
Breaking
Extra Dimension 2011
(2011.01.24 - 01.25, Osaka University)
Shigeki Matsumoto
Indirect detections of dark matter using cosmic rays
Kohsaku Tobioka
Discovery of minimal UED at the LHC
ADC Colloquium(2011.01.25, NAOJ, Mitaka, Tokyo)
Tomoki Saito
Survey for extended Ly-alpha sources toward reionization epoch

Seminar at KIAS
(2011.02.07, KIAS, Korea)
Issha Kayo
Velocity Power Spectrum of the SDSS Galaxies;
Spherical Harmonics Analysis
The 4th Symposium on Deciphering the Ancient Universe
with Gamma-Ray Bursts(2011.02.07 - 09, Tokyo Tech)
Ken’ichi Nomoto
The evolution and final fate of mass accreting Pop III
stars
2011 Shanghai Asia-Pacific School and Workshop on
Gravitation(2011.02.10, Shanghai Normal University, China)
Shinji Mukohyama
Alternative Gravity Theories

Conference on Derived Category(2011.01.26, University of Tokyo, Komaba, Tokyo)
Kyoji Saito
The lattice of vanishing cycles of types A 12 ∞ and D 12 ∞Alexey Bondal
Derived Categories of Coherent Sheaves

KIAS Geometry Seminar(2011.02.11, 02.14, 02.21, KIAS, Korea)
Sergey Galkin
Mirror symmetry for minuscule varieties
Sergey Galkin
Degenerations, mirros and their mutations
Sergey Galkin
Mirrors for Fano threefolds

From Pixels to Shear (2011 GREAT Workshop 1)(2011.01.26 - 01.28, e-Science Institute, Edinburgh)
Masahiro Takada
SuMIRe HSC/PFS Project
Hironao Miyatake
Shapes Using Multiple Exposures

Unsolved Problems in Astrophysics and Cosmology(2011.02.14, Velazquez, Spain)
Hitoshi Murayama
Neutrinos

Lecture series at Waseda University(2011.01.26 , Tokyo)
Shinji Mukohyama
Gravitation and Cosmology

Seminar at King’s College(2011.02.24, King’s College London)
Sergey Galkin
Mirrors for minuscule varieties
Colloquium at University of Toledo(2011.02.25, Toledo, Spain)
Todor Milanov
Integrable systems in GW theory
Fireworks workshop 2011
(2011.02.22 - 25, Caltech, Pasadena)
Ken’ichi Nomoto
The evolution and explosion of mass-accreting Pop III
stars
Integrable systems, random matrices, algebraic geometry
and geometric invariants(2011.02, Steklov Mathematical Institute, Moscow)
Satoshi Kondo
Expressions of local L and e factors in Hecke
eigenvalues
Seminar at Carnegie Observatories(2011.03.01, Carnegie Observatories, Pasadena)
Ken’ichi Nomoto
The Explosion of Pop III Stars and Extremely MetalPoor Stars

Exponential Asymptotics and Virtual Turning Points(2011.03.10 - 2011.03.11, RIMS, Kyoto)
Alexander Getmanenko
Resurgent analysis of the Witten Laplacian in one
dimensionPFS Technical Meeting(2011.03.10, Princeton)
Hitoshi Murayama
PFS Status
Electroweak Symmetry Breaking(2011.03.11 - 2011.03.17, YITP, Kyoto Univ.)
Shigeki Matsumoto
Discussion: Composite Higgs models
Instantons in Complex Geometry(2011.03.14 - 18, Moscow)
Alexey Bondal
Coherent sheaves on minuscule varieties
Cosmological Perturbation and Cosmic Microwave
Background(2011.03.15, Kyoto)
Shinji Mukohyama
Status of Horava-Lifshitz gravity

Multi Messenger from Supernovae(2011.03.01 - 2011.03.03, NAOJ, Tokyo)
Masaomi Tanaka
3D Geometry of Supernovae Revealed by Optical
Spectropolarimetry

Rencontres de Moriond(2011.03.20 - 2011.03.27, La Thuile, Aosta, Italy)
Cosimo Bambi
Compact objects with spin parameter a* > 1
Shigeki Sugimoto
Holographic Description of Hadrons from String
TheorySeminar at Kinki University(2011.03.04, Kinki University, Japan)
Tadashi Takayanagi
Holographic Entanglement Entropy

Spring meeting of the German Physical Society(2011.03.21, Muenster, Germany)
Kai Martens
XMASS Experiment in Kamioka

Seminar at Cambridge University(2011.02.16, 02.17, DAMTP, Cambrige)
Shigeki Sugimoto
Baryons as Solitons in Holographic QCD
Shigeki Sugimoto
Mesons as Open Strings in Holographic QCDLong Term Workshop Geometry and Analysis (Japan
France Sakura-project)(2011.03.07, Kyoto University)
Kyoji Saito
F-functions associated with cancellative monoids

Symposium on Future Applications of Germanium
Detectors in Fundamental Research(2011.03.23 - 2011.03.29, Beijing)
Jing Liu
Pulse shape simulation for segmented detectors

U.Tokyo GCOE-physics research assistant retreat(2011.02.18, Izu-Nagaoka, Japan)
Taizan Watari
Is String Theory Useful for Particle Physics

DENET 2011 Subaru HSC meeting(2011.03.07, ASIAA, Taiwan)
Masayuki Tanaka
Photo-z working group progress report

Himeji PDE conference(2011.02.19 - 2011.02.20, Himeji, Japan)
Alexander Getmanenko
Resurgent analysis of the Witten Laplacian in one
dimension

Center for Cosmology and Particle Physics Seminar(2011.03.08, Ohio State University)
Mark Vagins
GADZOOKS! How to See Extragalactic Neutrinos by
2016

Branes and Bethe Ansatz in Supersymmetric Gauge
Theories Workshop(2011.03.23, Simons Center for Geometry And Physics)
Domenico Orlando
The Gauge-Bethe correspondence: Dualities andBranesColloquium at National Central University(2011.03.09, National Central University, Taiwan)
Tsz Yan Lam
Analytical modelings in large-scale structure

Gravitational-wave Physics&Astronomy Workshop(2011.01, Milwaukee, U.S.A.)
M. Nakahata
Neutrino observatories

Workshop on Fano Varieties and Extremal Laurent
Polynomials(2011.02.22 - 2011.02.25, Imperial College London)
Sergey Galkin
1. Beyond Minkowski ansatz,
2. Cones and Unsections; Tom, Jerry and Spike,
3. Special Cremona group gauge-equivalence principle:
Cremona ansatz and towards “ Usnich ansatz”

Deciphering the Ancient Universe with Gamma-Ray
Bursts, 4th symposium(2011.02.07 - 2011.02.09, Tokyo Tech)
Masaomi Tanaka
Spectropolarimetry of Supernovae

Colloquium at Excellence Cluster(2011.02.23, Excellence Cluster, Garching)
Masayuki Tanaka
A new method to identify AGNs and the nature of lowluminosity AGNs

Lecture at International Christian University(2011.01.27, ICU, Mitaka, Tokyo)
Ken’ichi Nomoto
Supernovae
Aspen conference: Strongly Correlated Systems andGauge/Gravity Duality(2011.01.31 - 2011.02.05, Aspen Center for Physics)
Tadashi Takayanagi
Holographic Quantum Quenches
Seminar at OIQP
(2011.01, Okayama, Japan)
Wei Li
Holography and Entanglement of Flat Space66

Subaru seminar(2011.02.10, NAOJ, Hilo, Hawaii)
Masayuki Tanaka
A new method to identify AGNs and the nature of lowluminosity AGNs

IPMU Annual Report 2010

PHY 880 Guest Lecture(2011.03.09, Ohio State University)
Mark Vagins
Chasing Neutrinos Around the World: A Personal
History
Special Seminar at ASIAA(2011.03.10, ASIAA, Taiwan)
Tsz Yan Lam
Analytical modelings in large-scale structure

Conference Talks

Workshop on Mirror Symmetry and Related Topics(2011.01.23 - 02.04, University of Miami, Florida)
Sergey Galkin
Laurent phenomenon for Landau-Ginzburg potential
Sergey Galkin
G-Fano threefolds and Mathieu group

Joint Seminar on Number Theory of Laboratoire J.-V.
Poncelet and Sector 4.1 IITP RAS(2011.03.28, Independent University of Moscow)
Sergey Galkin
Fano and Mathieu
Seminar of the Department of Algebra(2011.03.29, Steklov Mathematical Institute, Russia)
Sergey Galkin
Mutations of potentials
JPS Annual Meeting(2011.03, Niigata, Japan)
Kohsaku Tobioka
Discovery of minumal UED at the LHC

IPMU Annual Report 2010

67

(This list includes principal investigators and joint appointment staff.)

Edwin Turner, Princeton (USA), astrophysics 5.27-6.15

Hiroyuki Ikeda, Ehime (Japan), astronomy 6.23-6.25

Takahiro Sumi, Nagoya (Japan), astroparticle physics
5.27-5.28

Hung-Yu Jian, NTU (Taiwan), astrophysics 6.23-6.25

Matthew Headrick, Brandeis (USA), string theory 5.286.05

JFY2010
2010
Charlie Beil, UC Santa Barbara (USA), mathematics
03.24-06.18
Thomas O’Donnell, LBL (USA), neutrino physics 3.276.25
Michael Ratz, Technical U Munich (Germany), particle
theory 3.28-4.02
George Smoot, LBL (USA), astrophysics 4.02-4.04
Alexandr Usnich, Zurich(Switzerland), mathematics 4.034.25
Alejandro Ibarra, Technical U Munich (Germany),
particle theory 4.04-4.18
Alexey Bondal, Aberdeen (UK), mathematics 4.04-4.17
Alexander Kusenko, UCLA (USA), particle theory 4.056.05
Josh Ruderman, Princeton (USA), particle theory 4.054.11
Daniel Sternheimer, Bourgogne (France), mathematics
4.05-4.06
Tomoyuki Abe, Tokyo (Japan), mathematics 4.05-4.06
Ryo Ookawa, Tokyo Tech (Japan), mathematics 4.05-4.06
Masaaki Harada, Yamagata (Japan), mathematics 4.054.06
Akihiro Munemasa, Tohoku (Japan), mathematics 4.054.06
Makoto Sakurai, Tokyo (Japan), mathematics 4.05-4.06
Noriyuki Abe, Tokyo (Japan), mathematics 4.05-4.06
Nobuharu Sawada, Sophia U (Japan), mathematics 4.054.06
Ryosuke Kodera, Tokyo (Japan), mathematics 4.05-4.06
Roland de Putter, UC Berkeley (USA), astrophysics 4.064.12
Hiroyuki Fuji, Nagoya (Japan), astroparticle physics 4.064.06

Malte Schamm, Kyoto (Japan), astrophysics 5.31-6.04

Yusei Koyama, Tokyo (Japan), 6.23-6.23
Kenta Matsuoka, Ehime (Japan), cosmology 6.23-6.25
Sogo Mineo, Tokyo (Japan), astrophysics 6.23-6.25
Satoshi Miyazaki, NAOJ (Japan), astronomy 6.23-6.25

Masato Taki, Kyoto (Japan), string theory 4.20-4.21

Eiichiro Komatsu, Texas (USA), cosmology 6.01-7.01

Chris Belczynski, New Mexico State (USA), astronomy
4.24-5.08

Daniel Greenwald, MPI (Germany), high energy physics
6.01-6.01

Hiroyuki Hirashita, Academia Sinica (Taiwan),
astronomy 4.25-5.01

Vikram Rentala, UC Berkeley (USA), particle theory
6.01-8.07

Hiroaki Nishioka, Academia Sinica (Taiwan), astrophysics 6.23-6.25

Typhoon Lee, Academia Sinica (Taiwan), astrophysics
4.25-5.01

Alexander Voronov, Minnesota (USA), mathematics 6.028.30

Atsushi Nishizawa, Tokyo (Japan), astronomy 6.23-6.25

Akira Ishii, Hiroshima (Japan), mathematics 4.26-4.27

Giovanni Marozzi, Inst Astro Paris (France), cosmology
6.05-6.13

Tomohiro Okamura, Tohoku (Japan), astronomy 6.236.25

Christopher Gauthier, Michigan Ctr Theo Phys (USA),cosmology 6.07-6.14

Jun Okumura, Kyoto (Japan), astrophysics 6.23-6.25

Sergei Blinnikov, ITEP (Russia), astronoly 4.27-5.11
Takashi Onaka, Tokyo (Japan), astrophysics 4.28-4.29
Itsuki Sakon, Tokyo (Japan), astronomy 4.28-4.29
Shinya Komugi, JAXA (Japan), astrophysics 4.28-4.29

Sanjay Jhingan, Jamia Millia Islamia (India), cosmology
6.09-6.09

Shintaro Koshida, Tokyo IoA (Japan), astronomy 4.284.29

Sachiko Tsuruta, Montana State (USA), astrophysics
6.11-6.11

Ryou Ohsawa, Tokyo (Japan), astronomy 4.28-4.29

Jounghun Lee, SNU (Korea), cosmology 6.14-7.02

Hinako Fukushi, Tokyo IoA (Japan), astronomy 4.28-4.29

Andreas Karch, Washington (USA), string theory 6.156.16

Kazuyuki Omukai, Kyoto (Japan), astrophysics 4.28-4.29
Akio Inoue, Osaka Sangyo U (Japan), astrophysics 4.284.29
Poshak Gandhi, JAXA (Japan), astronomy 4.28-4.29
Hanindyo Kuncarayakti, Tokyo IoA (Japan), astronomy
4.28-4.29
Shogo Masaki, Nagoya (Japan), astrophysics 4.28-4.29
Hisanori Ohashi, Kyoto (Japan), mathematics 4.28-4.29
Nozomu Tominaga, Konan U (Japan), astrophysics 4.295.05

Tomoki Morokuma, NAOJ (Japan), astronomy 6.23-6.25
Tohru Nagao, Ehime (Japan), astronomy 6.23-6.25

Masamune Ooguri, NAOJ (Japan), cosmology 6.23-6.25

Yuki Okura, NAOJ (Japan), astronomy 6.23-6.25
Kazuhiro Shimasaku, Tokyo (Japan), astronomy 6.236.25
Ken-ichi Tadaki, Tokyo (Japan), astronomy 6.23-6.25
Ryuichi Takahashi, Hirosaki U (Japan), astronomy 6.236.25
Mikito Tanaka, Tohoku (Japan), astronomy 6.23-6.25

Roger Blandford, KIPAC (USA), cosmology 6.17-6.18

Atsushi Taruya, Tokyo (Japan), astrophysics 6.23-6.25

Almudena Arcones, Basel (Switzerland), astrophysics
6.18-6.24

Tsuyoshi Terai, Kobe (Japan), astronomy 6.23-6.25

Masahiro Futaki, Tokyo (Japan), mathematics 6.21-6.21
Nakwoo Kim, Kyung Hee U (Korea), string theory 6.216.25
David Fallest, N Carolina State (USA), astrophysics 6.228.25

Nozomu Tominaga, Konan U (Japan), astrophysics 6.236.25
Yuji Urata, NCU (Taiwan), astronomy 6.23-6.25
Keiichi Umetsu, Academia Sinica (Taiwan), astrophysics
6.23-6.25
Yousuke Utsumi, NAOJ (Japan), astronomy 6.23-6.25

Steve Bickerton, Princeton (USA), astronomy 6.22-6.25

Pin-Wei Wang, NTNU (Taiwan), astronomy 6.23-6.25

Tadashi Ishibe, Hiroshima (Japan), mathematics 4.30-5.02

Craig Loomis, Princeton (USA), cosmology 6.22-6.25

Yoshihiro Ueda, Kyoto (Japan), astrophysics 6.23-6.24

Yuri Efremenko, Tennessee (USA), neutrino physics 5.025.12

Robert Lupton,Princeton (USA), cosmology 6.22-6.25

Chi-Hung Yan, ASIAA (Taiwan), astrophysics 6.23-6.23

Nobuhiro Okabe, Academia Sinica (Taiwan), astronomy
6.22-7.08

Kohki Konishi, Tokyo ICRR (Japan), astronomy 6.23-6.25

Sanshiro Enomoto, Washington (USA), neutrino physics
5.09-5.18
Frans Klinkhamer, Karlsruhe (Germany), particle theory
5.10-6.05

Rachel Mandelbaum, Princeton (USA), cosmology 6.226.27
Kinya Oda, Osaka (Japan), particle theory 6.22-6.24

Melody Wolk, ENS Cachan (France), cosmology 6.25-7.02
Toshihiro Kawaguchi, Tsukuba (Japan), astrophysics
6.25-6.25
August Evrard, Michigan State (USA), astrophysics 6.267.07

Wolfgang Lerche, CERN (Switzerland), string theory
5.10-5.14

Yasuhiro Hashimoto, NTNU (Taiwan), astronomy 6.226.26

Kazushi Ueda, Osaka (Japan), mathematics 5.10-5.11

Bin Wei, NTNU (Taiwan), astronomy 6.22-6.26

Henk Hoekstra, Leiden (Netherlands), cosmology 6.267.03

Mitsutoshi Fujita, Kyoto (Japan), particle theory 5.10-5.13

Induk Lee, NCU (Taiwan), astronomy 6.22-6.26

Paul Martini, Ohio State (USA), astrophysics 6.26-7.03

Daniel Moskovich, Kyoto (Japan), mathematics 5.11-5.11

Kentaro Nagamine, Nevada (USA), astrophysics 6.23-7.30

Johan Richard, Durham (UK), cosmology 6.26-7.08

Boris Tsygan, Northwestern (USA), mathematics 4.13-4.16

Antal Jevicki, Brown (USA), field theory 5.13-6.04

James Gunn, Princeton (USA), astrophysics 6.23-7.02

Anthony Gonzalez, Florida (USA), astrophysics 6.27-7.03

Tomonori Totani, Kyoto (Japan), astroparticle

Shigeki Matsumoto, Toyama (Japan), cosmology 5.17-5.22

Michael Strauss, Princeton (USA), astronomy 6.23-7.02

Physics 4.14-4.14

Henry Sobel, UC Irvine (USA), astroparticle physics 5.185.23

Masashi Chiba, Tohoku (Japan), astronomy 6.23-6.25

William Holzapfel, UC Berkeley (USA), astrophysics
6.27-7.02

Bertrand Toen, Montepelliler 2 (France), mathematics
4.11-4.23
Yi-Fu Cai, Chinese Academy of Sciences (China),
cosmology 4.12-4.23

Bruce Draine, Princeton (USA), astrophysics 4.16-5.02
Hsin-Wei Chen, IES Academia Sinica (Taiwan),
astronomy 4.18-4.30

68

Daisuke Yamasawa, Hokkaido (Japan), astronomy 4.194.30

Linda Uruchurtu Gomez, Cambridge (UK), string theory
5.29-6.21

Nobuhiko Katayama, KEK (Japan), high energy physics
6.23-6.25

Enrico Barausse, Maryland (USA), cosmology 5.23-6.05
Robert Quimby, Caltech (USA), astronomy 5.24-6.02

Sebastien Foucaud, NTNU (Taiwan), astrophysics 6.236.25

Stefano Borgani, U Trieste (Italy), cosmology 6.27-7.03
James Bullock, UC Irvine (USA), cosmology 6.27-7.03

Andrea Prudenziati, SISSA (Italy), string theory 4.184.24

Atsushi Nishizawa, Tohoku (Japan), astronomy 5.24-5.26

Hisanori Furusawa, NAOJ Hawaii (Japan), astronomy
6.23-6.25

Kiyotomo Ichiki, Nagoya (Japan), cosmology 5.24-5.27

Tomotsugu Goto, Hawaii (USA), astronomy 6.23-6.24

Gabriella De Lucia, INAF-OAT Trieste (Italy), astronomy
6.27-7.04

Johannes Heinonen, Cornell (USA), particle theory 4.195.02

Lawrence Krauss, Arizona State (USA), astronomy 5.256.01

Takashi Hamana, NAOJ (Japan), astronomy 6.23-6.23

Hans Boehringer, MPI (Germany), cosmology 6.27-7.03

Brice Menard, CITA (Canada), astrophysics 4.19-5.02

Masao Hayashi, Tokyo (Japan), astronomy 6.23-6.23

Sudeep Das, LBL (USA), cosmology 6.27-7.07

Poshak Gandhi, JAXA (Japan), astronomy 5.25-5.25

IPMU Annual Report 2010

Visitors

11 Visitors

Daisuke Nagai, Yale (USA), cosmology 6.27-7.16

IPMU Annual Report 201069

Daniela Bettoni, INAF Padova (Italy), astronomy 6.27-7.03

Tommaso Treu, UC Santa Barbara (USA), astrophysics
6.27-7.03

Dale Kocevski, UC Santa Cruz (USA), astronomy 6.27-7.03

Bodo Ziegler, European Southern Observatory, astronomy
6.27-7.03
Kevin Bundy, UC Berkeley (USA), astronomy 6.27-7.03
Alexie Leauthaud, LBL (USA), astrophysics 6.27-7.03
Jesper Rasmussen, Carnegie Observatories (USA),astronomy 6.27-7.03
Ming Sun, Virginia (USA), astronomy 6.27-7.03
Suet Ying Mak, U Southern California (USA), astronomy
6.27-7.02
Renbin Yan, Toronto (Canada), astrophysics 6.27-7.03

Alfonso Aragon-Salamanca, Nottingham (UK),
astronomy 6.27-7.03

Hyunmi Song, SNU (Korea), astrophysics 6.27-7.03

Alexis Finoguenov, MPI (Germany), astronomy 7.05-7.16

Sophie Maurogordato, CNRS Cote d’Azur (France),
astronomy 06.27-7.03

Atsushi Nishizawa, Tokyo (Japan), astronomy 6.27-7.03

Chiaki Hikage, Princeton (USA), cosmology 7.05-7.17

Ernst Kuiper, Leiden (Netherlands), astronomy 6.27-7.03

Eiichi Egami, Arizona (USA), astronomy 7.05-7.07

Mike Hudson, Waterloo (Canada), 6.27-7.03

Andreas Piepke, Alabama (USA), neutrino physics 7.067.13

Masao Hayashi, Tokyo (Japan), astronomy 6.27-7.03
Radoslaw Wojtak, N. Copernicus Astr Ctr (Poland),astronomy 6.27-7.03
Nicolas Clerc, CEA-Saclay (France), astronomy 6.27-7.03

David Atlee, Ohio State (USA), astronomy 6.27-7.03

Pasquale Mazzotta, Rome Tor Vergata (Italy),
astrophysics 6.27-7.08

Yuko Ideue, Ehime (Japan), astronomy 6.27-7.03

Susan Ilani Loubser, U Western Cape (South Africa),
6.27-7.03
Victoria Hamilton-Morris, Birmingham (UK),
astrophysics 6.27-7.08

Yusei Koyama, Tokyo (Japan), astronomy 6.27-7.03
Massimo Meneghetti, INAF Bologna (Italy), astronomy
6.27-7.03

Masatoshi Shoji, Texas (USA), cosmology 6.27-7.02
Fredrick High, Harvard (USA), astronomy 6.27-7.03

Begoña Ascaso, UC Davis (USA), cosmology 6.27-7.03
Kimihiko Nakajima, Tokyo (Japan), astronomy 6.27-7.03
John Mulchaey, Carnegie Obs (USA), astronomy 6.27-7.03
Shogo Masaki, Nagoya (Japan), astrophysics 6.27-7.03
Joon Hyeop Lee, KASI (Korea), astronomy 6.27-7.03
Alexander Fritz, Gemini Obs (USA), astronomy 6.27-7.03

Wako Aoki, NAOJ (Japan), astronomy 7.13-7.13

Kai-yang Lin, ASIAA (Taiwan), cosmology 6.27-7.03
Ana Lopes, Nature News & Views (UK), 6.27-7.03

Matt Owers, Swinburne (Australia), astrophysics 6.27-7.03

Takayuki Tamura, JAXA (Japan), astronomy 6.27-7.03

Eduardo Rozo, Chicago (USA), astronomy 6.27-7.03

Bianca Poggianti, INAF Padova (Italy), astronomy 6.287.03

Douglas Rudd, IAS (USA), astrophysics 6.27-7.03
David Willman, MPI (Germany), astronomy 6.27-7.03
Luca Lamagna, Rome (Italy), astrophysics 6.27-7.03
Elizabeth McGrath, UC Santa Cruz (USA), astronomy
6.27-7.03

Gilbert Holder, McGill (Canada), astrophysics 6.28-7.03
Tetsu Kitayama, Toho (Japan), cosmology 6.28-7.01
Tadayuki Kodama, NAOJ (Japan), astronomy 6.28-7.02
Graham Smith, Birmingham (UK), astronomy 6.28-7.08

Sean Moran, Johns Hopkins (USA), astrophysics 6.28-7.02

Daniel John, Durham (UK), astronomy 6.27-7.03

Eiichi Egami, Arizona (USA), astronomy 6.27-7.03

Hao-Yi Wu, KIPAC (USA), astronomy 6.27-7.03

Florian Pacaud, AIFA Bonn (Germany), astronomy 6.277.03

Jose Diego, IFCA (Spain), astronomy 6.27-7.03
Yuval Birnboim, Harvard (USA), astronomy 6.27-7.03
Spencer Stanford, UC Davis (USA), astronomy 6.27-7.03
Yutaka Fujita, Osaka (Japan), astronomy 6.27-7.02
Sadanori Okamura, Tokyo (Japan), astronomy 6.27-7.03
Patricia Sanchez-Blazquez, IAC (Spain), astronomy 6.277.03
Felipe Menanteau, Rutgers (USA), astronomy 6.27-7.03
Brian Mason, NRAO (USA), astronomy 6.27-7.03

IPMU Annual Report 2010

Nobuhiko Katayama, KEK (Japan), high energy physics
7.13-7.13

Hiroaki Nishioka, Academia Sinica (Taiwan),
astrophysics 6.27-7.03

Keiichi Umetsu, Academia Sinica (Taiwan), astrophysics
6.27-7.03

Piero Rosati, ESO (Germany), astronomy 6.27-7.03

Hsiang-nan Li, Inst Physics (Taiwan), particle theory 7.127.18

Motokazu Takizawa, Yamagata (Japan), 6.27-7.03

David Maltby, Nottingham (UK), astronomy 6.27-7.03

Neelima Sehgal, KIPAC (USA), astronomy 6.27-7.03

Martin Guest, Tokyo Metropolitan U (Japan), mathematics
7.12-7.12

Kyoko Matsushita, Tokyo U Sci (Japan), astronomy 7.137.13

Kentaro Nagao, Nagoya (Japan), mathematics 6.28-6.28

Silvia Galli, Paris 7 (France), astronomy 6.27-7.02

Kenji Kadota, Michigan (USA), particle theory 7.10-7.14

Hung-Yu Jian, NTU (Taiwan), astrophysics 6.27-7.03

Michael Gladders, KICP (USA), cosmology 6.27-7.03

Anna Ferre-Mateu, Inst Astro Canarias (Spain),astronomy 6.27-7.03

Valery Rubakov, Russian Academy Sci (Russia), string
theory 7.08-7.08

Pasi Nurmi, Turku (Turkey), astronomy 6.27-7.03

Kaustuv Basu, MPI (Germany), astronomy 6.28-7.03

Stefania Giodini, MPI (Germany), astrophysics 06.27-7.03

Daisuke Nagai, Yale (USA), cosmology 7.07-7.16

Nina Hatch, Nottingham (UK), astronomy 6.27-7.03

Maciej Bilicki, N. Copernicus Astr Ctr (Poland),astrophysics 6.27-7.03

Matthew George, UC Berkeley (USA), astronomy 6.277.03

Hiromitsu Sato, York U (Canada), particle theory 7.077.07

Megan Gralla, Chicago (USA), astronomy 6.27-7.03

Maria Pereira, Arizona (USA), astrophysics 6.27-7.07

Audrey Galametz, Strasbourg Astr Obs(France),astronomy 6.27-7.03

Michitoshi Yoshida, Hiroshima (Japan), astronomy 6.277.03

Jean Coupon, Tohoku (USA), astronomy 6.27-7.03

Kyoko Matsushita, Tokyo U Sci (Japan), astronomy 6.277.03

Wojciech Hellwing N., Copernicus Astr Ctr (Poland),astronomy 6.27-7.04

Erwin Lau, Chicago (USA), astrophysics 6.27-7.03

Kohji Yoshikawa, Tsukuba (Japan), astrophysics 6.27-7.03

Adam Muzzin, Yale (USA), astronomy 6.27-7.03

Silvia Ameglio, U Southern California (USA), astrophysics
6.27-7.03

Matthew Bayliss, Chicago (USA), astrophysics 6.27-7.03

Ben Granett, Hawaii (USA), astronomy 6.27-7.03

Chris Haines, Birmingham (UK), astrophysics 6.27-7.08
Paul May, Birmingham (UK), astronomy 6.27-7.08

Tao Liu, Chicago (USA), particle theory 7.04-7.12

Rene Fassbender, MPI (Germany), astrophysics 6.27-7.03

Benedetta Vulcani, Padova (Italy), astronomy 6.27-7.03

Roderik Overzier, MPI (Germany), astrophysics 6.27-7.03

Martha Milkeraitis, UBC (Canada), astronomy 6.27-7.03

Daniel Holz, Los Alamos (USA), astrophysics 7.04-7.14
Andrei Frolov, Simon Fraser (Germany), cosmology 7.047.07

Yara Ribbi, Nottingham (UK), astronomy 6.27-7.03

Carlos Cunha, Michigan (USA), astrophysics 6.27-7.03

Teresa Riehm, Stockholm (Sweden), astronomy 6.27-7.03

Dan Marrone, KICP (USA), cosmology 7.03-7.08

Alain Mazure, OAMP (France), astronomy 6.27-7.03

Masato Onodera, CEA-Saclay (France), astrophysics
6.27-7.03

Yu-Ying Zhang, AIFA Bonn (Germany), astronomy 6.277.07

70

Tiziano Valentinuzzi, Padova (Italy), astronomy 6.27-7.03

Sarah Hansen, UC Observatories (USA), astrophysics
6.27-7.03

Lihwai Lin, ASIAA (Taiwan), astrophysics 6.27-7.03
Steven Crawford, South African Astr Obs (South Africa),
6.27-7.03
Casey Papovich, Texas A&M (USA), astronomy 6.27-7.03
Dario Fadda, IPAC Caltech (USA), astronomy 6.27-7.03
Ian McCarthy, KICC (UK), cosmology 6.27-7.03

Arjen de Hoon, AIP (USA), astrophysics 6.28-7.02

Jean-Paul Kneib, OAMP (France), astronomy 7.18-7.22
Anne Ealet, CPPM (France), astronomy 7.18-7.22
Richard Ellis, Caltech (USA), astronomy 7.18-7.21
Ian Parry, Cambridge (UK), astronomy 7.18-7.21
Masashi Chiba, Tohoku (Japan), astronomy 7.19-7.20
Masayuki Akiyama, Tohoku (Japan), astronomy 7.19-7.20
Yu Niinou, Kyoto (Japan), astrophysics 7.20-7.22
Massimo Porrati, NYU (USA), cosmology 7.22-8.23

Zheng Zheng, Yale (USA), cosmology 7.25-8.01

Stefano Ettori, INAF Bologna (Italy), astronomy 6.28-7.02

Ed Segal, Imperial Coll London (UK), mathematics 7.257.29

Naohisa Inada, Tokyo RESCEU (Japan), astronomy 6.287.02

Henry Sobel, UC Irvine (USA), astrophysics 7.26-8.06

Madoka Kawaharada, RIKEN (Japan), astrophysics
6.28-7.02

Hokuto Uehara, Tokyo Metropolitan U (Japan),mathematics 7.26-7.27

Tomoaki Ishiyama, NAOJ (Japan), astronomy 6.28-7.02

Masamune Ooguri, NAOJ (Japan), cosmology 7.28-7.30

Naomi Ota, Tokyo Tech (Japan), astrophysics 6.28-7.02

Zohar Komargodski, IAS (USA), particle theory 7.288.04

Brian Wecht, IAS (USA), particle theory 6.29-7.06

Ben Hoyle, Barcelona (Spain), cosmology 6.27-7.03

Stavros Katsanevas, IN2P3.CNRS (France), astrophysics
7.17-7.20

Yoshiki Matsuoka, Nagoya (Japan), astronomy 6.28-7.02

Alessandro Rettura, UC Riverside (USA), astronomy
6.27-7.03

Anja von der Linden, KIPAC (USA), astronomy 6.27-7.03

Natsuko Izutani, Tokyo (Japan), astronomy 7.13-7.13

James Stone, Boston U (USA), high energy physics 7.237.29

Conor Mancone, Florida (USA), astronomy 6.27-7.03

Mark Brodwin, Harvard (USA), astronomy 6.27-7.03

Ko Nakamura, NAOJ (Japan), astronomy 7.13-7.13

Mathilde Jauzac, OAMP (France), astronomy 6.28-7.08

Masayasu Kamimura, RIKEN (Japan), nuclear physics
6.29-7.01

Sune Toft, Copenhagen (Denmark), cosmology 6.27-7.03

Takashi Yoshida, NAOJ (Japan), astronomy 7.13-7.13

Yutaka Hosotani, Osaka (Japan), particle theory 7.29-7.29

C. S. Kim, Yonsei (Korea), particle theory 7.01-7.30

Christopher Walter, Duke (USA), neutrino physics 8.028.22

Chang Soon Park, Caltech (USA), string theory 7.02-8.13

Tadayuki Kodama, NAOJ (Japan), astronomy 8.04-8.05

Tadashi Ishibe, Hiroshima (Japan), mathematics 7.02-7.04

Nobunari Kashikawa, NAOJ (Japan), astronomy 8.048.05

Lars Hernquist, Harvard (USA), astroparticle physics
7.02-7.08

Visitors

Takashi Hamana, NAOJ (Japan), astronomy 6.27-7.03

IPMU Annual Report 201071

Kentaro Motohara, Tokyo IoA (Japan), astronomy 8.048.05

Kazuharu Bamba, Natl Tsing Hua (Taiwan), cosmology
9.27-10.01

Masashi Hazumi, KEK (Japan), high energy physics 9.2710.01

Sumit Ranjan Das, Kentucky (USA), string theory 10.0310.07

Toru Misawa, Shinshu U (Japan), astronomy 8.04-8.05

Priyotosh Bandyopadhyay, KIAS (Korea), particle theory
9.27-10.01

Xiao-Gang He, NTU (Taiwan), particle theory 9.27-10.01

Tatsuo Kobayashi, Kyoto (Japan), particle theory 10.0310.09

Chihiro Toukoku, Tohoku (Japan), astronomy 8.04-8.05
Masamune Ooguri, NAOJ (Japan), cosmology 8.04-8.05
Masakazu Kobayashi, NAOJ (Japan), astronomy 8.048.05
Jonathan Trump, Arizona (USA), astronomy 8.05-8.05
Hiroaki Nishioka, Academia Sinica (Taiwan),
astrophysics 8.15-9.09
Kate Scholberg, Duke (USA), neutrino physics 8.16-9.06
Keiichi Umetsu, Academia Sinica (Taiwan), astrophysics
8.16-8.17
Ragnar Buchweitz, Toronto (Canada), mathematics 8.178.17
Emanuel Scheidegger, Augsburg (Germany), mathematics
8.19-9.10

Mar Bastero-Gil, Granada (Spain), cosmology 9.27-10.01

W-Y. Pauchy Kwang, NTU (Taiwan), astrophysics 9.2710.01

Jochen Baumann, MPI (Germany), cosmology 9.27-10.01

Kiyotomo Ichiki, Nagoya (Japan), cosmology 9.27-10.01

Nicole Bell, Melbourne (Australia), particle theory 9.2710.01

Shoichi Ichinose, Shizuoka (Japan), particle theory 9.2710.01

Francis Bernardeau, CEA-Saclay (France), astronomy
9.27-10.01

Keiji Igi, Riken (Japan), particle theory 9.27-10.01

Ole Bjaelde, RWTH Aachen (Germany), cosmology 9.2710.01
Luis Maria T Bo-ot, U Philippines (Philippines), general
physics 9.27-10.01
Wilfried Buchmuller, DESY (Germany), particle theory
9.27-10.01
Thomas Tram Bülow, Aarhus (Denmark), particle theory
9.27-10.01

Hideo Iguchi, Nihon U (Japan), cosmology 9.27-10.01
Naohisa Inada, Tokyo RESCUE (Japan), astronomy 9.2710.01
Takeo Inami, Chuo U (Japan), field theory 9.27-10.01
Kaiki Taro Inoue, Kinki U (Japan), cosmology 9.27-10.01
Yoshizumi Inoue, Tokyo ICEPP (Japan), high energy
physics 9.27-10.01
Fabio Iocco, IAP (France), cosmology 9.27-10.01

Erminia Calabrese, Rome Spienza (Italy), astrophysics
9.27-10.01

Mark Jackson, Leiden (Netherlands), cosmology 9.2710.01

Gianluca Calcagni, MPI(Germany), gravitational physics
9.27-10.01

Hiroyuki Ishida, Niigata (Japan), particle theory 9.2710.01

Feng-Yin Chang, LeCosPA (Taiwan), cosmology 9.2710.01

Aya Ishihara, Chiba (Japan), astrophysics 9.27-10.01

Alexey Bondal, Aberdeen (UK), mathematics 8.22-9.20

Teeraparb Chantavat, Oxford (UK), astrophysics 9.2710.01

Kwang Sik Jeong, Tohoku (Japan), particle theory 9.2710.01

Raphael Flauger, Texas (USA), cosmology 8.23-10.22

Pisin Chen, SLAC (USA), cosmology 9.27-10.01

Shin Nakamura, Kyoto (Japan), particle theory 9.02-9.02

Takeshi Chiba, Nihon U (Japan), cosmology 9.27-10.01

Mario Kadastik, NIPCB/CERN (Switzerland),astrophysics 9.27-10.01

Sanjoy Biswas, Harish-Chandra Res Inst (India), particle
theory 9.07-10.06

Yuji Chinone, Tohoku (Japan), astronomy 9.27-10.01

Kenji Kadota, Michigan (USA), particle theory 9.27-10.01

Sirichai Chongchitnan, Oxford (UK), cosmology 9.2710.01

Kimmo Kainulainen, Jyväsklä (Finland), particle theory
9.27-10.01

Sebastien Clesse, Brussels (Belgium), cosmology 9.2710.01

Nemanja Kaloper, UC Davis (USA), high energy physics
9.27-10.01

Vittoria Demozzi, LMU Munich (Germany), astrophysics
9.27-10.01

Kohei Kamada, Tokyo (Japan), cosmology 9.27-10.01

Vincent Desjacques, UZH (USA), astrophysics 9.27-10.01

Kazumi Kashiyama, Kyoto (Japan), cosmology 9.27-10.01

Marco Drewes, EPFL (Switzerland), particle theory 9.2710.01

Shinta Kasuya, Kanagawa (Japan), cosmology 9.27-10.01

Chris Brook, Central Lancashire (UK), cosmology 8.218.26
Robert Lupton, Princeton (USA), cosmology 8.22-9.02
Craig Loomis, Princeton (USA), csmology 8.22-9.02
Pyungwon Ko, KIAS (Korea), high energy physics 8.228.25

Zengo Tsuboi, OIQP (Japan), mathematical physics 9.079.07
Adam Martin, Fermilab (USA), particle theory 9.07-9.10
Dragan Huterer, Michigan (USA), cosmology 9.08-9.08
Valeri Frolov, Alberta (Canada), cosmology 9.12-9.20
John Mangual, UC Santa Barbara (USA), mathematics
9.16-12.14
Richard Eager, UC Santa Barbara (USA), mathematics
9.17-12.13

Koji Ishidoshiro, KEK (Japan), relativity 9.27-10.01

Toshiya Kashiwagi, Tokyo (Japan), cosmology 9.27-10.01

Johanna Dunkley, Oxford (UK), cosmology 9.27-10.01

Norita Kawanaka, KEK (Japan), particle theory 9.2710.01

David R. Morrison, UC Santa Barbara (USA),mathematics 9.20-12.20

Francesc Ferrer, U Washington (USA), cosmology 9.2710.01

Masahiro Kawasaki, Tokyo ICRR (Japan), cosmology
9.27-10.01

Leszek Roszkowski, Sheffield (UK), particle theory 9.2110.01

Fabio Finelli, INAF Bologna, cosmology 9.27-10.01

Salomeh Khoeini Moghaddam, IPM (Iran), cosmology
9.27-10.01

Graziano Rossi, KIAS (Korea), cosmology 9.24-9.24

Takeshi Fukuyama, Ritsumeikan (Japan), particle theory
9.27-10.01

Jihn E. Kim, SNU (Korea), particle theory 9.27-10.01

Mischa Gerstenlauer, Heidelberg (Germany), cosmology
9.27-10.01

Hajime Goto, KEK (Japan), cosmology 9.27-10.01

Jinn-Ouk Gong, Leiden (Netherlands), cosmology 9.2710.01

Takao Fukui, Dokkyo U (Japan), astronomy 9.27-10.01

Vincent Desjacques, Zurich (Switzerland), astrophysics
9.24-9.24
Robert Brandenberger, McGill (Canada), cosmology
9.26-10.09
Kiwoon Choi, KAIST (Korea), particle theory 9.26-10.09

Yuichi Fukazawa, Chuo (Japan), particle theory 9.27-10.01

Daniel Figueroa, HIP (Finland), cosmology 9.27-10.01
Tomohiro Fujita, Tokyo (Japan), cosmology 9.27-10.01

Petr Horava, UC Berkeley (USA), string theory 9.26-10.01

Hajime Goto, KEK (Japan), cosmology 9.27-10.01

Kensuke Fukunaga, Tokyo (Japan), cosmology 9.27-10.01

Urjit Yajnik, IIT Bombay (India), cosmology 9.26-10.08

Michael Grefe, DESY (Germany), particle theory 9.2710.01

Stepan Paul, UC Santa Barbara (USA), mathematics 9.2812.12

Je-An Gu, NTU (Taiwan), cosmology 9.27-10.01

Devendra Kumar Sahu, IIAP (India), astronomy 9.3010.30

Eva Silverstein, SLAC (USA), high energy physics 9.279.29
Siamak Akhshabi, UMZ (Iran), mathematics 9.27-10.01
Antusch Stefan, MPI (Germany), particle theory 9.2710.01
Shoji Asai, Tokyo ICEPP (Japan), high energy physics
9.27-10.01

Sebastian Halter, MPI (Germany), string theory 9.2710.01
Tetsuya Hara, Kyoto Sangyo U (Japan), astrophysics 9.2710.01
Yusuke Hayashi, Kyushu (Japan), astrophysics 9.27-10.01

Robbert Dijkgraaf, Amsterdam (Netherlands),
mathematical physics 10.01-10.01
Nathan Broomhead, Bath (UK), mathematics 10.02-10.16
Daniel Baumann, IAS (USA), cosmology 10.03-10.09

Gary Shiu, Wisconsin (USA), string theory 10.03-10.09
Kostas Skenderis, Amsterdam (Netherlands), string
theory 10.03-10.09
Elias Kiritsis, Crete (Greece), cosmology 10.03-10.09
Cristiano Germani, LMU Munich (Germany), cosmology
10.03-10.09
Jinn-Ouk Gong, Leiden (Netherlands), cosmology 10.0310.09
Alexander Vikman, CERN (Switzerland), cosmology
10.03-10.08
Oleg Evnin, ITP-CAS (China), string theory 10.03-10.09
Mark Jackson, Leiden (Netherlands), cosmology 10.0310.09
Takahiro Tanaka, Kyoto (Japan), cosmology 10.03-10.09
Fabian Schmidt, Caltech (USA), cosmology 10.03-10.05
Sergey Ketov, Tokyo Metropolitan U (Japan), cosmology
10.04-10.08
Kei-ichi Maeda, Waseda (Japan), cosmology 10.04-10.08
Akihiro Ishibashi, KEK (Japan), cosmology 10.04-10.08
Hideo Kodama, KEK (Japan), cosmology 10.04-10.08
Osamu Seto, Hokkai-Gakuen U (Japan), particle theory
10.04-10.08
Hajime Goto, KEK (Japan), cosmology 10.04-10.08
Yosuke Sumitomo, TIFR (India), particle theory 10.0410.08
Shuichiro Yokoyama, Nagoya (Japan), cosmology 10.0410.08
Takeo Inami, Chuo (Japan), field theory 10.04-10.08
Masato Minamitsuji, Kwansei Gakuin U (Japan),cosmology 10.04-10.08
Sebastian Halter, MPI (Germany), string theory 10.0410.08
Jiajun Xu, Wisconsin (USA), cosmology 10.04-10.08
Yasuhiro Sekino, OIQP (Japan), string theory 10.04-10.08
Kyung Kiu Kim, IEU Ewha Womans U (Korea), particle
theory 10.04-10.08
Igmar Rosas-Lopez, Sokendai (Japan), particle theory
10.04-10.08
Gonzalo Palma, Chile (Chile), cosmology 10.04-10.08

Visitors

Tomonori Totani, Kyoto (Japan), astrophysics 8.04-8.05

Jun’ichi Yokoyama, Tokyo RESCEU (Japan), astrophysics
10.04-10.08
Shingo Torii, Tokyo (Japan), string theory 10.04-10.08
Ken’ichi Saikawa, Tokyo ICRR (Japan), string theory
10.04-10.08
Kenji Ikegami, Tokyo Dental College (Japan), relativity
10.04-10.08
Masayoshi Nakamura, Tokyo (Japan), string theory
10.04-10.08
Toshifumi Noumi, Tokyo (Japan), string theory 10.0410.08
Koichi Miyamoto, Tokyo ICRR (Japan), string theory
10.04-10.08
Igmar Rosas-Lopez, Sokendai (Japan), cosmology 10.0410.08

Guillermo Ballesteros, INAF Padova (Italy), 9.27-10.01

72

IPMU Annual Report 2010

IPMU Annual Report 201073

Yoshihisa Kitazawa, KEK (Japan), particle theory 10.0410.08
Yuko Urakawa, Waseda (Japan), cosmology 10.04-10.08
Ryo Wakebe, Waseda (Japan), relativity 10.04-10.08
Masahiro Kawasaki, Tokyo ICRR (Japan), cosmology
10.04-10.08
Jong-Chul Park, KIAS (Japan), particle theory 10.0410.08
Shoichi Ichinose, Shizuoka (Japan), particle theory 10.0410.08

Takayuki Kiwanami, KEK (Japan), particle theory 11.0811.11

Motohiko Kusakabe, Tokyo ICRR (Japan), particle theory
12.01-12.01

Michael Strauss, Princeton (USA), astronomy 10.24-10.29

Tsuyoshi Nakaya, Kyoto (Japan), high energy physics
11.09-11.11

Sho Sato, Tokyo (Japan), astronomy 12.01-12.01

Christopher Walter, Duke (USA), neutrino physics 11.0911.14

Hidetoshi Yamaguchi, Tokyo CNS (Japan), nuclear
physics 12.01-12.01

Ruben Minasian, CEA-Saclay (France), string theory
11.13-11.19

Keigo Takayama, Tokyo (Japan), relativity 12.01-12.01

Enrico Trincherini, SISSA (Italy), particle theory 11.1411.29

Tadaaki Isobe, Tokyo (Japan), astrophysics 12.01-12.01

Robert Gibson, Washington (USA), astrophysics 10.2410.29
Yue Shen, Harvard (USA), astronomy 10.24-11.03
David Wake, Yale (USA), astronomy 10.24-10.29
Brice Menard, CITA (Canada), astrophysics 10.24-10.29
Daryl Haggard, Washington (USA), astronomy 10.2410.29

Hajime Goto, KEK (Japan), cosmology 12.01-12.01

Kaori Otsuki, Fukuoka (Japan), astrophysics 12.01-12.01

Nic Ross, LBL (USA), astrophysics 10.24-10.29

Shrinivas Kulkarni, Caltech (USA), astronomy 12.0312.03

Yoji Koyama, Chuo (Japan), particle theory 10.04-10.08

Sanshiro Enomoto, Washington (USA), neutrino physics
11.15-11.24

Luca Ciotti, Bologna (Italy), astrophysics 10.24-10.29

Yoichi Mieda, Kyushu (Japan), mathematics 11.15-11.19

Robert Quimby, Caltech (USA), astronomy 12.03-12.03

Yuichi Fukazawa, Chuo (Japan), particle theory 10.0410.08

Xin Liu, Princeton (USA), astronomy 10.24-11.03

Yudai Suwa, Tokyo (Japan), astrophysics 11.15-11.15

Martin Elvis, Harvard (USA), astrophysics 12.05-12.12

Christina Tremonti, Wisconsin (USA), astronomy 10.2410.28

Kunihito Ioka, KEK (Japan), particle theory 11.15-11.15

James Stone, Boston (USA), high energy physics 12.0612.17

Washington Taylor, MIT (USA), particle theory 10.0610.20
David Shih, Rurgers (USA), high energy physics 10.0610.20

Ting-Wen Lan, ASIAA (Taiwan), astronomy 10.24-11.30
Mamoru Doi, Tokyo IoA (Japan), astronomy 10.25-10.28

Alexei Starobinsky, Landau Inst (fRussia), cosmology
10.07-10.14

Naohisa Inada, Tokyo RESCUE (Japan), astronomy
10.25-10.28

Larry Weber, NSF Tokyo Office (USA), 10.08-10.08

Yen-Ting Lin, ASIAA (Taiwan), astrophysics 10.25-12.31

Anne Emig, NSF Tokyo Office (USA), 10.08-10.08

Yuri Efremenko, Tennessee (USA), neutrino physics
10.25-11.03

Agnieszka Maria Bodzenta-Skibinska, Warsaw (Poland),mathematics 10.11-12.17
Edwin Turner, Princeton (USA), astrophysics 10.12-10.29
Yosuke Sumitomo, TIFR (India), particle theory 10.1210.12
Tadashi Ishibe, Hiroshima (Japan), mathematics 10.1410.16

Koji Hashimoto, RIKEN (Japan), particle theory 10.2610.26

Kazuyuki Omukai, Kyoto (Japan), astrophysics 11.1511.15
Takashi Hosokawa, Kyoto (Japan), astrophysics 11.1511.15

Tomoyuki Abe, Tokyo (Japan), mathematics 11.16-11.19

Takamitsu Miyaji, Inst Astr Ensenada (Mexico),
astronomy 12.07-12.08

Tadashi Ishibe, Hiroshima (Japan), mathematics 11.1611.17
Le Dung Trang, ICTP (Italy), mathematics 11.16-11.16

Nobuhiko Katayama, KEK (Japan), high energy physics
10.27-10.27

Mitsutoshi Fujita, Kyoto (Japan), particle theory 11.1611.19

Raphael Ponge, Tokyo (Japan), mathematics 10.28-10.28

Sergei Gukov, Caltech (USA), particle theory 11.19-11.20
Yukiko Konishi, Kyoto (Japan), mathematics 11.22-11.22

Nobuhiko Katayama, KEK (Japan), high energy physics
11.01-11.01

Sergey Sibiryakov, INR (Russia), mathematical physics
11.24-12.04

Alexey Bondal, Aberdeen (UK), mathematics 10.162011.01.31

Brice Menard, CITA (Canada), astrophysics 11.012011.1.21

Luca Panizzi, IPNL (France), particle theory 11.24-11.24

Brian Fujikawa, LBL (USA), neutrino physics 10.18-11.09

Edward Kearns, Boston (USA), neutrino physics 11.0611.14
Werner Rodejohann, MPI (Germany), neutrino physics
11.07-11.13

Shirley Ho, LBL (USA), cosmology 10.21-10.30

Morimitsu Tanimoto, Niigata (Japan), particle theory
11.07-11.11

Katarina Kovac, MPI (Germany), astrophysics 10.2310.29

Morgan Wascko, Imperial Coll. London (UK), neutrino
physics 11.07-11.13

Yanmei Chen, Nanjing (China), astronomy 10.24-10.29

Alexander Himmel, Caltech (USA), high energy physics
11.07-11.11

Guinevere Kauffmann, MPI (Germany), astrophysics
10.24-10.28
Guangtun Zhu, NYU (USA), astrophysics 10.24-10.29
Rita Tojeiro, Portsmouth (UK), cosmology 10.24-10.29
Khee-Gan Lee, Princeton (USA), astronomy 10.24-10.29
Timothy Heckman, Johns Hopkins U (USA), astrophysics
10.24-10.29
Kevin Bundy, UC Berkeley (USA), astronomy 10.24-10.29
Alexie Leauthaud, LBL (USA), astrophysics 10.24-10.29
Janine Pforr, Portsmouth (UK), astrophysics 10.24-10.29
Nikhil Padmanabhan, Yale (USA), astrophysics 10.2410.29
Renbin Yan, NYU (USA), astrophysics 10.24-10.29
Claudia Maraston, Portsmouth (UK), cosmology 10.2410.29
Daniel Thomas, Portsmouth (UK), cosmology 10.24-10.28

IPMU Annual Report 2010

Atsushi Watanabe, Niigata (Japan), neutrino physics
11.07-11.11

Tatsuma Nishioka, Princeton (USA), particle theory
12.09-2011.01.13
Toshiyuki Kobayashi, Tokyo (Japan), mathematics 12.0912.09
Tadashi Ishibe, Hiroshima (Japan), mathematics 12.1012.12
Sergei Blinnikov, ITEP (Russia), astronomy 12.122011.02.12
Constantin Teleman, UC Berkeley (USA), mathematics
12.12-12.18

Tomoki Nakanishi, Nagoya (Japan), mathematics 11.2511.27

Xi Yin, Harvard (USA), string theory 12.14-12.20

Krzysztof Gawedzki, Lyon (France), mathematicalphysics 11.28-12.08

Nemanja Kaloper, UC Davis (USA), high energy physics
12.14-12.18

Osamu Iyama, Nagoya (Japan), mathematics 11.29-11.30

Reiko Toriumi, UC Irvine (USA), cosmology 12.16-12.18

Serge Richard, Lyon (France), mathematics 12.14-12.14

Akitoshi Ueda, NAOJ (Japan), astronomy 11.29-11.29
Friedel Thielemann, Basel (Switzerland), astrophysics
12.01-12.01
Christian Ott, Caltech (USA), astrophysics 12.01-12.01
Nozomu Tominaga, Konan U (Japan), astrophysics 12.0112.01
Kentaro Someya, JAXA (Japan), astrophysics 12.01-12.01

Hajime Ishimori, Niigata (Japan), particle theory 11.0711.11

Tomoyuki Maruyama, Nihon (Japan), nuclear physics
12.01-12.01

Yusuke Shimizu, Niigata (Japan), particle theory 11.0711.11

Hiroari Miyatake, KEK (Japan), nuclear physics 12.0112.01

Tadafumi Kishimoto, Osaka (Japan), high energy physics
11.08-11.09

Nobuya Nishimura, NAOJ (Japan), astronomy 12.01-12.01

Marco Baumgartl, LMU Munich (Germany), string
theory 11.08-11.17

Kevin Bundy, UC Berkeley (USA), astronomy 12.07-12.14
Masahide Shimizu, Hokkaido (Japan), string theory
12.07-12.11

Kenta Matsuoka, Ehime (Japan), cosmology 11.01-11.05

James Sully, UC Santa Barbara (USA), mathematics
10.20-11.21

Takeo Nishinou, Tohoku (Japan), mathematics 12.0612.06

Nozomu Tominaga, Konan U (Japan), astrophysics 11.1511.15

Yifung (Bess) Ng, Case Western (USA), relativity 10.1410.14

Le Dung Trang, ICTP (Italy), mathematics 10.19-10.19

74

Jonas Johansson, Portsmouth (UK), astrophysics 10.2410.29

Hiroki Nagakura, Waseda (Japan), astrophysics 12.0112.01

2011
Alexey Bondal, Aberdeen (UK), mathematics 2010.10.161.31
Brice Menard, CITA (Canada), astrophysics 2010.11.011.21
Tatsuma Nishioka, Princeton (USA), particle theory
2010.12.09-1.13
Sergei Blinnikov, ITEP (Russia), astronomy 2010.12.122.12
Sachiko Tsuruta, Montana State (USA), astrophysics
1.05-1.05

Toshitaka Kajino, NAOJ (Japan), astronomy 12.01-12.01

Albrecht Klemm, Bonn (Germany), string theory 1.061.15

David Kahl, Tokyo CNS (Japan), nuclear physics 12.0112.01

Patrick Decowski, Nikhef (Netherlands), high energy
physics 1.11-1.16

Ryosuke Sato, Tokyo (Japan), particle theory 11.08-11.11

Shigeru Kubono, Tokyo CNS (Japan), nuclear physics
12.01-12.01

Dongsu Bak, SNU (Korea), particle theory 1.17-1.30

Ken-ichi Senda, KEK (Japan), particle theory 11.08-11.11

Ko Nakamura, NAOJ (Japan), astronomy 12.01-12.01

Jose Valle, Valencia (Spain), astrophysics 11.08-11.14
Kate Scholberg, Duke (USA), neutrino physics 11.0811.14

Visitors

Jun Nishimura, KEK (Japan), particle theory 10.04-10.08

Andrea Ferrara, SISSA (Italy), astronomy 1.18-1.22
Norihiro Iizuka, KIPT UCSB (USA), string theory 1.191.24

IPMU Annual Report 201075

Oscar Varela, MPI (Germany), string theory 1.22-1.29

Masanori Sato, Nagoya (Japan), astrophysics 2.22-2.23

Maria Rodriguezâ, MPI (Germany), asring theory 1.221.29

Samir Mathur, Ohio State (USA), particle theory 2.232.26

Patrick Decowski, Nikhef (Netherlands), high energy
physics 1.22-1.28

Shin Nakamura, Kyoto (Japan), particle theory 2.23-2.24

Malte Schamm, Kyoto (Japan), astronomy 1.23-1.26
Luc Dessart, OAMP (France), astronomy 1.28-2.28
Dmitry Kaledin, Steklov Inst (Russia), mathematics 1.292.02
Stefano Liberati, SISSA (Italy), astronomy 1.30-2.06
Elena Sorokina, Sternberg Astr Inst (Russia), astrophysics
2.01-2.28
Young-Hwan Hyun, Sungkyunkwan (Korea), string
theory 2.04-2.18

Sampei Usui, Osaka (Japan), mathematics 2.24-2.24
Ikuo Satake, Osaka (Japan), mathematics 2.24-2.24
Masataka Chida, Kyoto (Japan), mathematics 2.24-2.27
Shigeyuki Kondo, Nagoya (Japan), mathematics 2.24-2.24
Daniel Sternheimer, Bourgogne (France), mathematics
2.24-2.24
Toshiyuki Katsura, Hosei (Japan), mathematics 2.24-2.24
Takashi Otofuji, Nihon U (Japan), mathematics 2.24-2.24

Kiyoshi Takeuchi, Tsukuba (Japan), mathematics 2.082.09

Akishi Ikeda, Tokyo (Japan), mathematics 2.24-2.24

Jiro Sekiguchi, Tokyo U of Agr & Tech (Japan),mathematics 2.08-2.09

Xu-Feng Wang, Hefei (China), particle theory 2.25-2.28

Oksu Seon, Nagoya (Japan), high energy physics 2.10-2.10
Gordon Semenoff, UBC (Canada), string theory 2.15-2.15
Luis Lehner, Perimeter Inst (Canada), astrophysics 2.202.26
Samir Mathur, Ohio State (USA), cosmology 2.20-2.26
Jeffrey McClintock, Harvard (USA), astrophysics 2.202.26
Frans Pretorius, Princeton (USA), mathematical physics
2.20-2.26

Hidemasa Oda, Tokyo (Japan), mathematics 2.24-2.24
Paul Price, Princeton (USA), astrophysics 2.26-3.06
Craig Loomis, Princeton (USA), cosmology 2.26-3.05
Robert Lupton, Princeton (USA), cosmology 2.26-3.06
Chiaki Kobayashi, Australian Natl U (Australia),
astronomy 2.28-3.01
Michel Granger, U Angers (France), mathematics 2.282.28
Steve Bickerton, Princeton (USA), astronomy 3.01-3.16
Serguey Petcov, SISSA (Italy), particle theory 3.01-4.18

Rohta Takahashi, RIKEN (Japan), astrophysics 2.20-2.25

Ezequiel Treister, Hawaii (USA), astronomy 3.03-3.04

Enrico Barausse, Maryland (USA), cosmology 2.20-2.26

Hajime Sugai, Kyoto (Japan), astronomy 3.03-3.03

Noriaki Ogawa, Kyoto (Japan), particle theory 2.20-2.26

Binata Panda, Inst Phys, Bhubaneswar (India), string
theory 3.07-3.11

Tatsuo Azeyanagi, Kyoto (Japan), particle theory 02.202.26

Takuya Okuda, Tokyo (Japan), string theory 3.08-3.08

Thomas Hartman, Princeton (USA), particle theory 2.202.26

Yuri Efremenko, Tennessee (USA), neutrino physics 3.083.16

Massimo Dotti, MPI (Germany), astrophysics 2.20-2.26

Salman Habib, Los Alamos (USA), csmology 3.10-3.11

Kei-ichi Maeda, Waseda (Japan), cosmology 2.21-2.25

Shinobu Hosono, Tokyo (Japan), mathematical physics
3.10-3.10

Shin Mineshige, Kyoto (Japan), astrophysics 2.21-2.25
Tomohiro Takahashi, Kyoto (Japan), astrophysics 2.212.26

Hui Luo, Zhejiang (China), particle theory 3.13-3.15
Shun Saito, UC Berkeley (USA), cosmology 3.22-3.25

Chulmoon Yoo, Kyoto (Japan), cosmology 2.21-2.25

Ken Mawatari, Tohoku (Japan), astrophysics 3.23-4.03

Robert Mann, Waterloo (Canada), mthematical physics
2.21-2.25

Wataru Kasai, Tohoku (Japan), astronomy 3.25-4.09

Marc Henneaux, Brussels Free U (Belgium),mathematical physics 2.21-2.25

Eibun Senaha, NCTS (Taiwan), high energy physics 3.294.05

Tomohiro Harada, Rikkyo (Japan), mathematical physics
2.21-2.25
Vincent Fish, MIT (USA), astronomy 2.21-2.25
Akihiro Ishibashi, KEK (Japan), cosmology 2.21-2.25
Hiroshi Iritani, Kyoto (Japan), mathematics 2.21-2.21
Kazunori Akiyama, Tokyo (Japan), astronomy 2.21-2.25
Yukinori Sasagawa, Waseda (Japan), cosmology 2.21-2.25
Yuki Yokokura, Kyoto (Japan), particle theory 2.21-2.25
Tatsuo Azeyanagi, Kyoto (Japan), particle theory 2.222.26
Kiyotomo Ichiki, Nagoya (Japan), cosmology 2.22-2.23

76

Yusei Koyama, Tokyo (Japan), astronomy 2.24-2.24
Atsushi Takahashi, Osaka (Japan), mathematics 2.24-2.24

IPMU Annual Report 2010

Tadashi Ishibe, Hiroshima (Japan), mathematics 3.24-3.29

JFY2007

JFY2008

1. Multidimensional simulations for early-phase
spectra of aspherical hypernovae: SN 1998bw and
off-axis hypernovae,
Masaomi Tanaka, Keiichi Maeda, Paolo A. Mazzali,
Ken’ichi Nomoto,
Astrophysical Journal, 668, (1), pp. L19-L22, 2007,
OCT 10 2007.

1. Cosmic microwave background-weak lensing
correlation: Analytical and numerical study ofnonlinearity and implications for dark energy,
Atsushi J. Nishizawa, Eiichiro Komatsu, Naoki
Yoshida, Ryuichi Takahashi, Naoshi Sugiyama,
Astrophysical Journal Letters, 676, (2), pp. L93-L96,
2008, APR 1 2008.

2. The aspherical properties of the energetic type Ic
SN 2002ap as inferred from its nebular spectra,
P. A. Mazzali, K. S. Kawabata, K. Maeda, R. J. Foley,
K. Nomoto, J. Deng, T. Suzuki, M. Iye, N. Kashikawa,
Y. Ohyama, A. V. Filippenko, Y. Qiu, J. Wei,
Astrophysical Journal, 670, (1), pp. 592-599, 2007,
NOV 20 2007.

2. The outermost ejecta of Type Ia supernovae,
Masaomi Tanaka, Paolo A. Mazzali, Stefano Benetti,
Ken’ichi Nomoto, Nancy Elias-Rosa, Rubina Kotak,
Giuliano Pignata, Vallery Stanishev, Stephan
Hachinger,
Astrophysical Journal, 677, (1), pp. 448-460, 2008,
APR 10 2008.

3. The r-process in supersonic neutrino-driven
winds: The role of the wind termination shock,Takami Kuroda, Shinya Wanajo, Ken’ichi Nomoto,
Astrophysical Journal, 672, (2), pp. 1068-1078, 2008,
JAN 10 2008.

3. Probing nonstandard neutrino physics by two
identical detectors with different baselines,
Nei Cipriano Ribeiro, Hiroshi Nunokawa, Takaaki
Kajita, Shoei Nakayama, Pyungwon Ko, Hisakazu
Minakata,
Physical Review D, 77, (7), 073007, 2008, APR 2008.

4. nu-process nucleosynthesis in population III corecollapse supernovae,
Takashi Yoshida, Hideyuki Umeda, Ken’ichi Nomoto,
Astrophysical Journal, 672, (2), pp. 1043-1053, 2008,
JAN 10 2008.
5. Estimation prospects of the source number densityof ultra-high-energy cosmic rays,
Hajime Takami, Katsuhiko Sato,
Astroparticle Physics, 28, (6), pp. 529-539, 2008, JAN
2008.
6. How much Ni-56 can be produced in corecollapse
supernovae? Evolution and explosions of 30-100
M-circle dot stars,
Hideyuki Umeda, Ken’ichi Nomoto,
Astrophysical Journal, 673, (2), pp. 1014-1022, 2008,
FEB 1 2008.
7. Gravitino dark matter from inflaton decay,
Fuminobu Takahashi,
Physics Letters B, 660, (3), pp. 100-106, 2008, FEB
21 2008.
8. Asphericity in supernova explosions from latetime
spectroscopy,
Keiichi Maeda, Koji Kawabata, Paolo A. Mazzali,
Masaomi Tanaka, Stefano Valenti, Ken’ichi Nomoto,Takashi Hattori, Jinsong Deng, Elena Pian, Stefan
Taubenberger, Masanori Iye, Thomas Matheson,
Alexei V. Filippenko, Kentaro Aoki, George Kosugi,
Youichi Ohyama, Toshiyuki Sasaki, Tadafumi
Takata,Science, 319, (5867), pp. 1220-1223, 2008, FEB 29
2008.
9. Phase diagram of nuclear “pasta” and its
uncertainties in supernova cores,
Hidetaka Sonoda, Gentaro Watanabe, KatsuhikoSato, Kenji Yasuoka, Toshikazu Ebisuzaki,
Physical Review C, 77, (3), 035806, 2008, MAR
2008.

4. Metastable vacua in perturbed Seiberg-Witten
theories,
Hirosi Ooguri, Yutaka Ookouchi, Chang-Soon Park,
Advances In Theoretical And Mathematical Physics,
12, (2), pp. 405-427, 2008, APR 2008.
5. Toward unravelling the structural distribution ofultra-high-energy cosmic ray sources,
Hajime Takami, Katsuhiko Sato,
Astrophysical Journal, 678, (2), pp. 606-613, 2008,
MAY 10 2008.
6. Determining the mass for an ultralight gravitino
at LHC,K. Hamaguchi, S. Shirai, T. T. Yanagida,
Physics Letters B, 663, (1-2), pp. 86-94, 2008, MAY
15 2008.
7. Impact of massive neutrinos on the nonlinear
matter power spectrum,
Shun Saito, Masahiro Takada, Atsushi Taruya,
Physical Review Letters, 100, (19), 191301, 2008,
MAY 16 2008.
8. Chemical abundances of the secondary star in theblack hole X-ray binary XTE J1118+480,
Jonay I. Gonzalez Hernandez, Rafael Rebolo, Garik
Israelian, Alexei V. Filippenko, Ryan Chornock,Nozomu Tominaga, Hideyuki Umeda, Ken’ichi
Nomoto,Astrophysical Journal, 679, (1), pp. 732-745, 2008,
MAY 20 2008.

Publications

Luis Ho, Carnegie Obs (USA), astronomy 1.23-1.27

12 Publications

9. Moduli stabilization in stringy ISS models,Yu Nakayama, Masahito Yamazaki, T. T. Yanagida,
Physics Letters B, 663, (3), pp. 281-285, 2008, MAY
22 2008.

IPMU Annual Report 201077

21. Single-field inflation, anomalous enhancement ofsuperhorizon fluctuations and non-Gaussianity inprimordial black hole formation,
Ryo Saito, Jun’ichi Yokoyama, Ryo Nagata,
Journal Of Cosmology And Astroparticle Physics, (6),024, 2008, JUN 2008.

11. A hybrid method for determining particle masses
at the Large Hadron Collider with fully identified
cascade decays,
Mihoko M. Nojiri, Giacomo Polesello, Daniel R.
Tovey,
Journal Of High Energy Physics, (5), 0147, 2008,
MAY 2008.

22. Solving cosmological problems of supersymmetricaxion models in an inflationary universe,
Masahiro Kawasaki, Kazunori Nakayama,
Physical Review D, 77, (12), 123524, 2008, JUN
2008.

12. Decaying D-branes and moving mirrors,
Tomoyoshi Hirata, Tadashi Takayanagi, Shinji
Mukohyama,
Journal Of High Energy Physics, (5), 089, 2008,
MAY 2008.
13. Young and massive binary progenitors of type Ia
supernovae and their circumstellar matter,
Izumi Hachisu, Mariko Kato, Ken’ichi Nomoto,
Astrophysical Journal, 679, (2), pp. 1390-1404, 2008,
JUN 1 2008.
14. The evolution of the peculiar Type Ia supernova
SN 2005hk over 400 days,
D. K. Sahu, Masaomi Tanaka, G. C. Anupama, Koji
S. Kawabata, Keiichi Maeda, Nozomu Tominaga,
Ken’ichi Nomoto, Paolo A. Mazzali, T. P. Prabhu,
Astrophysical Journal, 680, (1), pp. 580-592, 2008,
JUN 10 2008.
15. Test of anomaly mediation at the LHC,
Shoji Asai, Takeo Moroi, T. T. Yanagida,
Physics Letters B, 664, (3), pp. 185-189, 2008, JUN
19 2008.
16. Gravitational waves as a probe of the gravitino
mass,
Fuminobu Takahashi, T. T. Yanagida, Kazuya
Yonekura,
Physics Letters B, 664, (3), pp. 194-198, 2008, JUN
19 2008.
17. Inclusive transverse mass analysis for squark andgluino mass determination,
Mihoko M. Nojiri, Yasuhiro Shimizu, Shogo Okada,Kiyotomo Kawagoe,
Journal Of High Energy Physics, (6), 035, 2008, JUN
2008.
18. Space-based gravitational-wave detectors candetermine the thermal history of the early
Universe,
Kazunori Nakayama, Shun Saito, Yudai Suwa,
Jun’ichi Yokoyama,
Physical Review D, 77, (12), 124001, 2008, JUN
2008.
19. Probing the reheating temperature of the universe
with a gravitational wave background,
Kazunori Nakayama, Shun Saito, Yudai Suwa,
Jun’ichi Yokoyama,
Journal Of Cosmology And Astroparticle Physics, (6),020, 2008, JUN 2008.
20. Quantum interference effects among helicities at
CERN LEP-II and Fermilab Tevatron,
Matthew R. Buckley, Beate Heinemann, William
Klemm, Hitoshi Murayama,
Physical Review D, 77, (11), 113017, 2008, JUN
2008.

78

IPMU Annual Report 2010

23. Electromagnetic properties of the early universe,
Keitaro Takahashi, Kiyotomo Ichiki, Naoshi
Sugiyama,
Physical Review D, 77, (12), 124028, 2008, JUN
2008.
24. Distortion of ultra-high-energy sky by galacticmagnetic field,
Hajime Takami, Katsuhiko Sato,
Astrophysical Journal, 681, (2), pp. 1279-1286, 2008,
JUL 10 2008.
25. Metastable vacua in perturbed Seiberg-Witten
theories. Part 2: Fayet-Iliopoulos terms andKahler normal coordinates,
Joseph Marsano, Hirosi Ooguri, Yutaka Ookouchi,
Chang-Soon Park,
Nuclear Physics B, 798, (1-2), pp. 17-35, 2008, JUL
21 2008.
26. Upperbound on squark masses in gaugemediation
model with light gravitino,
Junji Hisano, Minoru Nagai, Shohei Sugiyama, T. T.
Yanagida,
Physics Letters B, 665, (4), pp. 237-241, 2008, JUL
24 2008.
27. Discriminating spin through quantum
interference,
Matthew R. Buckley, Hitoshi Murayama, William
Klemm, Vikram Rentala,Physical Review D, 78, (1), 014028, 2008, JUL 2008.
28. Constraints on primordial black holes by
distortions of the cosmic microwave background,
Hiroyuki Tashiro, Naoshi Sugiyama,
Physical Review D, 78, (2), 023004, 2008, JUL 2008.
29. Strongly interacting gauge mediation at the LHC,
Koichi Hamaguchi, Eita Nakamura, Satoshi Shirai, T.
T. Yanagida,
Journal Of High Energy Physics, (7), 107, 2008, JUL
2008.
30. A measurement of neutralino mass at the LHC inlight gravitino scenarios,
Koichi Hamaguchi, Eita Nakamura, Satoshi Shirai,
Physics Letters B, 666, (1), pp. 57-61, 2008, AUG 7
2008.
31. The delay-time distribution of type Ia supernovae
and the single-degenerate model,
Izumi Hachisu, Mariko Kato, Ken’ichi Nomoto,
Astrophysical Journal Letters, 683, (2), pp.
L127-L130, 2008, AUG 20 2008.
32. The metamorphosis of supernova SN 2008D/XRF
080109: A link between supernovae and GRBs/
hypernovae,
Paolo A. Mazzali, Stefano Valenti, Massimo Della
Valle, Guido Chincarini, Daniel N. Sauer, Stefano
Benetti, Elena Pian, Tsvi Piran, Valerio D’Elia, Nancy

Elias-Rosa, Raffaella Margutti, Francesco Pasotti,
L. Angelo Antonelli, Filomena Bufano, Sergio
Campana, Enrico Cappellaro, Stefano Covino, Paolo
D’Avanzo, Fabrizio Fiore, Dino Fugazza, Roberto
Gilmozzi, Deborah Hunter, Kate Maguire, Elisabetta
Maiorano, Paola Marziani, Nicola Masetti, Felix
Mirabel, Hripsime Navasardyan, Ken’ichi Nomoto,
Eliana Palazzi, Andrea Pastorello, Nino Panagia, L.
J. Pellizza, Re’em Sari, Stephen Smartt, GianpieroTagliaferri, Masaomi Tanaka, Stefan Taubenberger,
Nozomu Tominaga, Carrie Trundle, Massimo Turatto,
Science, 321, (5893), pp. 1185-1188, 2008, AUG 29
2008.
33. Solar neutrino measurements in SuperKamiokande-II,
J. P. Cravens, K. Abe, T. Iida, K. Ishihara, J. Kameda,
Y. Koshio, A. Minamino, C. Mitsuda, M. Miura, S.
Moriyama, M. Nakahata, S. Nakayama, Y. Obayashi,
H. Ogawa, H. Sekiya, M. Shiozawa, Y. Suzuki, A.
Takeda,Y. Takeuchi, K. Ueshima, H. Watanabe, S.
Yamada, I. Higuchi, C. Ishihara, M. Ishitsuka, T.
Kajita, K. Kaneyuki, G. Mitsuka, H. Nishino, K.
Okumura, C. Saji, Y. Takenaga, S. Clark, S. Desai, F.
Dufour, E. Kearns, S. Likhoded, M. Litos, J. L. Raaf,
J. L. Stone, L. R. Sulak, W. Wang, M. Goldhaber, D.
Casper, J. Dunmore, W. R. Kropp, D. W. Liu, S. Mine,
C. Regis, M. B. Smy, H. W. Sobel, M. R. Vagins, K.
S. Ganezer, J. Hill, W. E. Keig, J. S. Jang, J. Y. Kim,
I. T. Lim, M. Fechner, K. Scholberg, N. Tanimoto, C.
W. Walter, R. Wendell, R. W. Ellsworth, S. Tasaka, G.
Guillian, J. G. Learned, S. Matsuno, M. D. Messier,Y. Watanabe, Y. Hayato, A. K. Ichikawa, T. Ishida,
T. Ishii, T. Iwashita, T. Kobayashi, T. Nakadaira,K. Nakamura, K. Nitta, Y. Oyama, Y. Totsuka, A.
T. Suzuki, M. Hasegawa, K. Hiraide, I. Kato, H.
Maesaka, T. Nakaya, K. Nishikawa, T. Sasaki, H.
Sato, S. Yamamoto, M. Yokoyama, T. J. Haines, S.
Dazeley, S. Hatakeyama, R. Svoboda, G. W. Sullivan,
D. Turcan, A. Habig, Y. Fukuda, T. Sato, Y. Itow, T.
Koike, T. Tanaka, C. K. Jung, T. Kato, K. Kobayashi,
M. Malek, C. McGrew, A. Sarrat, R. Terri, C.
Yanagisawa, N. Tamura, Y. Idehara, M. Ikeda, M.
Sakuda, M. Sugihara, Y. Kuno, M. Yoshida, S. B.
Kim, B. S. Yang, J. Yoo, T. Ishizuka, H. Okazawa, Y.
Choi, H. K. Seo, Y. Gando, T. Hasegawa, K. Inoue, Y.
Furuse, H. Ishii, K. Nishijima, H. Ishino, M. Koshiba,
S. Chen, Z. Deng, Y. Liu, D. Kielczewska, H. Berns,
R. Gran, K. K. Shiraishi, A. Stachyra, E. Thrane, K.
Washburn, R. J. Wilkes,
Physical Review D, 78, (3), 032002, 2008, AUG
2008.
34. Anisotropic inflation from vector impurity,
Sugumi Kanno, Masashi Kimura, Jiro Soda,
Shuichiro Yokoyama,
Journal Of Cosmology And Astroparticle Physics, (8),034, 2008, AUG 2008.
35. Affleck-Dine leptogenesis via multiple flat
directions,Kohei Kamada, Jun’ichi Yokoyama,
Physical Review D, 78, (4), 043502, 2008, AUG 2008.
36. Scintillation yield of liquid xenon at room
temperature,
K. Ueshima, K. Abe, T. Iida, M. Ikeda, K. Kobayashi,
Y. Koshio, A. Minamino, M. Miura, S. Moriyama,
M. Nakahata, Y. Nakajima, H. Ogawa, H. Sekiya,
M. Shiozawa, Y. Suzuki, A. Takeda, Y. Takeuchi,
M. Yamashita, K. Kaneyuki, T. Doke, Y. Ebizuka,
J. Kikuchi, A. Ota, S. Suzuki, T. Takahashi, H.
Hagiwara, T. Kamei, K. Miyamoto, T. Nagase, S.
Nakamura, Y. Ozaki, T. Sato, Y. Fukuda, T. Sato, K.
Nishijima, M. Sakurai, T. Maruyama, D. Motoki, Y.

Itow, H. Ohsumi, S. Tasaka, S. B. Kim, Y. D. Kim, J. I.
Lee, S. H. Moon,
Nuclear Instruments & Methods In Physics Research
Section A-Accelerators Spectrometers Detectors And
Associated Equipment, 594, (2), pp. 148-154, 2008,
SEP 1 2008.
37. Early formation of dust in the ejecta of type Ib SN
2006jc and temperature and mass of the dust,
Takaya Nozawa, Takashi Kozasa, Nozomu Tominaga,
Itsuki Sakon, Masaomi Tanaka, Tomoharu Suzuki,
Ken’ichi Nomoto, Keiichi Maeda, Hideyuki Umeda,
Marco Limongi, Takashi Onaka,
Astrophysical Journal, 684, (2), pp. 1343-1350, 2008,
SEP 10 2008.
38. Hidden Grassmann Structure in XXZ Model II:
Creation Operators,
H. Boos, M. Jimbo, T. Miwa, F. Smirnov, Y.
Takeyama,
Commun. Math. Phys. 286, 875 (2009), SEP 16 2008.
39. On the eccentricity distribution of exoplanets fromradial velocity surveys,
Yue Shen, Edwin L. Turner,
Astrophysical Journal, 685, (1), pp. 553-559, 2008,
SEP 20 2008.
40. Conformal supersymmetry breaking anddynamical tuning of the cosmological constant,
M. Ibe, Y. Nakayama, T. T. Yanagida, Physics Letters
B, 668, (1), pp. 28-31, 2008, SEP 25 2008.
41. Big-bang nucleosynthesis and gravitinos,
Masahiro Kawasaki, Kazunori Kohri, TakeoMoroi,
Akira Yotsuyanagi,
Physical Review D, 78, (6), 065011, 2008, SEP 2008.
42. Non-Gaussianity from symmetry,
Teruaki Suyama, Fuminobu Takahashi,
Journal Of Cosmology And Astroparticle Physics, (9),007, 2008, SEP 2008.
43. Simulations of baryon acoustic oscillations - I.
Growth of large-scale density fluctuations,
Ryuichi Takahashi, Naoki Yoshida, TakahikoMatsubara, Naoshi Sugiyama, Issha Kayo, Takahiro
Nishimichi, Akihito Shirata, Atsushi Taruya, Shun
Saito, Kazuhiro Yahata, Yasushi Suto,
Monthly Notices Of The Royal Astronomical Society,389, (4), pp. 1675-1682, 2008, OCT 1 2008.
44. GALEX SPECTROSCOPY OF SN 2005ay
SUGGESTS ULTRAVIOLET SPECTRALUNIFORMITY AMONG TYPE II-P
SUPERNOVAE,
A. Gal-Yam, F. Bufano, T. A. Barlow, E. Baron, S.
Benetti, E. Cappellaro, P. J. Challis, R. S. Ellis, A.
V. Filippenko, R. J. Foley, D. B. Fox, M. Hicken,
R. P. Kirshner, D. C. Leonard, W. Li, D. Maoz, T.
Matheson, P. A. Mazzali, M. Modjaz, K. Nomoto, E.
O. Ofek, J. D. Simon, T. A. Small, G. P. Smith, M.
Turatto, S. D. Van Dyk, L. Zampieri,
Astrophysical Journal Letters, 685, (2), pp.
L117-L120, 2008, OCT 1 2008.

Publications

10. Constraints on scalar-tensor models of darkenergy from observational and local gravity tests,
Shinji Tsujikawa, Kotub Uddin, Shuntaro Mizuno,
Reza Tavakol, Jun’ichi Yokoyama,
Physical Review D, 77, (10), 103009, 2008, MAY
2008.

45. Empirical abundance scaling laws andimplications for the gamma process in corecollapse supernovae,
Takehito Hayakawa, Nobuyuki Iwamoto, Toshitaka
Kajino, Toshiyuki Shizuma, Hideyuki Umeda,
Ken’ichi Nomoto,
Astrophysical Journal, 685, (2), pp. 1089-1102, 2008,
OCT 1 2008.

IPMU Annual Report 201079

47. Study of the top reconstruction in top-partner
events at the LHC,
Mihoko M. Nojiri, Michihisa Takeuchi,
Journal Of High Energy Physics, (10), 025, 2008,
OCT 2008.
48. Isocurvature fluctuations in the Affleck-Dine
mechanism and constraints on inflation models,Shinta Kasuya, Masahiro Kawasaki, Fuminobu
Takahashi,
Journal Of Cosmology And Astroparticle Physics,(10), 017, 2008, OCT 2008.
49. Gauge mediation with sequestered supersymmetry
breaking,
Satoshi Shirai, Fuminobu Takahashi, T. T. Yanagida,Kazuya Yonekura,Physical Review D, 78, (7), 075003, 2008, OCT 2008.
50. Unified origin of baryons and dark matter,
Ryuichiro Kitano, Hitoshi Murayama, Michael Ratz,
Physics Letters B, 669, (2), pp. 145-149, 2008, NOV 6
2008.
51. THE s-PROCESS IN MASSIVE STARS AT LOW
METALLICITY: THE EFFECT OF PRIMARY
N-14 FROM FAST ROTATING STARS,
M. Pignatari, R. Gallino, G. Meynet, R. Hirschi, F.
Herwig, M. Wiescher,
Astrophysical Journal Letters, 687, (2), pp. L95-L98,
2008, NOV 10 2008.
52. THE PECULIAR TYPE Ib SUPERNOVA 2006jc:
A WCO WOLF-RAYET STAR EXPLOSION,
N. Tominaga, M. Limongi, T. Suzuki, M. Tanaka,
K. Nomoto, K. Maeda, A. Chieffi, A. Tornambe, T.
Minezaki, Y. Yoshii, I. Sakon, T. Wada, Y. Ohyama, T.
Tanabe, H. Kaneda, T. Onaka, T. Nozawa, T. Kozasa,
K. S. Kawabata, G. C. Anupama, D. K. Sahu, U. K.
Gurugubelli, T. P. Prabhu, J. Deng,
Astrophysical Journal, 687, (2), pp. 1208-1219, 2008,
NOV 10 2008.
53. CP violation in B-s mixing in the SUSY SU(5)GUT with right-handed neutrinos,
Junji Hisano, Yasuhiro Shimizu,
Physics Letters B, 669, (5), pp. 301-305, 2008, NOV
27 2008.
54. Non-Gaussianity from isocurvature perturbations,
Masahiro Kawasaki, Kazunori Nakayama, Toyokazu
Sekiguchi, Teruaki Suyama, Fuminobu Takahashi,
Journal Of Cosmology And Astroparticle Physics,(11), 019, 2008, NOV 2008.
55. Superconformal Chern-Simons theories and thesquashed seven sphere,
Hirosi Ooguri, Chang-Soon Park,
Journal Of High Energy Physics, (11), 082, 2008,
NOV 2008.
56. Cosmological Constraints on Isocurvature andTensor Perturbations,
Masahiro Kawasaki, Toyokazu Sekiguchi,
Progress Of Theoretical Physics, 120, (5), pp. 9951016, 2008, NOV 2008.

80

IPMU Annual Report 2010

57. Electron and photon energy deposition in the
Universe,
Toru Kanzaki, Masahiro Kawasaki,
Physical Review D, 78, (10), 103004, 2008, NOV
2008.
58. INJECTION OF SHORT-LIVEDRADIONUCLIDES INTO THE EARLY SOLARSYSTEM FROM A FAINT SUPERNOVA WITHMIXING FALLBACK,A. Takigawa, J. Miki, S. Tachibana, G. R. Huss, N.
Tominaga, H. Umeda, K. Nomoto,
Astrophysical Journal, 688, (2), pp. 1382-1387, 2008,
DEC 1 2008.
59. Tycho Brahe’s 1572 supernova as a standard typeIa as revealed by its light-echo spectrum,
Oliver Krause, Masaomi Tanaka, Tomonori Usuda,
Takashi Hattori, Miwa Goto, Stephan Birkmann,Ken’ichi Nomoto,
Nature, 456, (7222), pp. 617-619, 2008, DEC 4 2008.
60. OPTICAL SPECTROPOLARIMETRY ANDASPHERICITY OF THE TYPE Ic SN 2007gr,
Masaomi Tanaka, Koji S. Kawabata, Keiichi Maeda,
Takashi Hattori, Ken’ichi Nomoto,
Astrophysical Journal, 689, (2), pp. 1191-1198, 2008,
DEC 20 2008.
61. Mass models and environment of the newquadruply lensed quasar SDSS J1330+1810,
Masamune Oguri, Naohisa Inada, Jeffrey A.
Blackburne, Min-Su Shin, Issha Kayo, Michael A.
Strauss, Donald P. Schneider, Donald G. York,Monthly Notices Of The Royal Astronomical Society,391, (4), pp. 1973-1980, 2008, DEC 21 2008.
62. Non-thermal neutrinos from supernovae leaving amagnetar,Shunsaku Horiuchi, Yudai Suwa, Hajime Takami,
Shin’ichiro Ando, Katsuhiko Sato, Monthly Notices
Of The Royal Astronomical Society,391, (4), pp. 1893-1899, 2008, DEC 21 2008.
63. Holographic Baryons - Static Properties and Form
Factors from Gauge/String Duality,
Koji Hashimoto, Tadakatsu Sakai, Shigeki Sugimoto,
Progress Of Theoretical Physics, 120, (6), pp. 10931137, 2008, DEC 2008.
64. Signature of primordial non-Gaussianity on thematter power spectrum,
Atsushi Taruya, Kazuya Koyama, TakahikoMatsubara,
Physical Review D, 78, (12), 123534, 2008, DEC
2008.
65. Constraints on the Time Variation of the Fine
Structure Constant by the 5-Year WMAP Data,
Masahiro Nakashima, Ryo Nagata, Jun’Ichi
Yokoyama,
Progress Of Theoretical Physics, 120, (6), pp. 12071215, 2008, DEC 2008.
66. Disordered systems and the replica method in
AdS/CFT,
Mitsutoshi Fujita, Yasuaki Hikida, Shinsei Ryu,
Tadashi Takayanagi,
Journal Of High Energy Physics, (12), 065, 2008,
DEC 2008.

67. Growth functions associated with Artin monoidsof finite type,
Kyoji Saito,
Proceedings Of The Japan Academy Series
AMathematical Sciences, 84, (10), pp. 179-183, 2008,
DEC 2008.

78. Gamma rays and positrons from a decaying
hidden gauge boson,
Chuan-Ren Chen, Fuminobu Takahashi, T. T.
Yanagida,
Physics Letters B, 671, (1), pp. 71-76, 2009, JAN 12
2009.

68. Stability conditions and crepant small resolutions,
Yukinobu Toda,
Transactions Of The American MathematicalSociety, 360, (11), pp. 6149-6178, 2008.

79. A case of subdominant/suppressed “high energy”
contribution to the baryon asymmetry of the
Universe in flavoured leptogenesis,
E. Molinaro, S. T. Petcov,
Physics Letters B, 671, (1), pp. 60-65, 2009, JAN 12
2009.

69. Extremal N = (2,2) 2D conformal field theories,
Matthias R. Gaberdiel, Sergei Gukov, Christoph A.
Keller, Gregory W. Moore, Hirosi Ooguri,
Communications In Number Theory And Physics, 2,(4), pp. 743-801, 2008.
70. Towards unravelling the structural distribution ofultra-high-energy cosmic ray sources,
Hajime Takami, Katsuhiko Sato,
Accelerators In The Universe, 1040, pp. 211-215,
2008.
71. New aspects of Heterotic-F-theory duality,
Hirotaka Hayashi, Radu Tatar, Yukinobu Toda,
Taizan Watari, Masahito Yamazaki,
Nuclear Physics B, 806, (1-2), pp. 224-299, 2009, JAN
1 2009.
72. PREDICTING PHOTOMETRIC AND
SPECTROSCOPIC SIGNATURES OF RINGSAROUND TRANSITING EXTRASOLAR
PLANETS,
Yasuhiro Ohta, Atsushi Taruya, Yasushi Suto,
Astrophysical Journal, 690, (1), pp. 1-12, 2009, JAN 1
2009.
73. IMPLICATIONS OF ULTRA-HIGH-ENERGYCOSMIC RAYS FOR TRANSIENT SOURCES
IN THE AUGER ERA,
Kohta Murase, Hajime Takami,
Astrophysical Journal Letters, 690, (1), pp. L14-L17,
2009, JAN 1 2009.
74. IMPACT OF ROTATION ON NEUTRINO
EMISSION AND RELIC NEUTRINOBACKGROUND FROM POPULATION III
STARS,
Yudai Suwa, Tomoya Takiwaki, Kei Kotake,
Katsuhiko Sato,
Astrophysical Journal, 690, (1), pp. 913-922, 2009,
JAN 1 2009.

80. THERMAL EVOLUTION OF
HYPERONMIXED NEUTRON STARS,
S. Tsuruta, J. Sadino, A. Kobelski, M. A. Teter,
A. C. Liebmann, T. Takatsuka, K. Nomoto, H.
Umeda,
Astrophysical Journal, 691, (1), pp. 621-632, 2009,
JAN 20 2009.
81. Consistent Anti-de Sitter-Space/ConformalField-Theory Dual for a Time-Dependent Finite
Temperature System,
Shunichiro Kinoshita, Shinji Mukohyama, ShinNakamura, Kin-ya Oda,
Physical Review Letters, 102, (3), 031601, 2009, JAN
23 2009.
82. Conformal gauge mediation and light gravitino of
mass m(3/2) < O(10) eV,
M. Ibe, Y. Nakayama, T. T. Yanagida,
Physics Letters B, 671, (3), pp. 378-382, 2009, JAN
26 2009.
83. Constraints on neutrino masses from weaklensing,
Kiyotomo Ichiki, Masahiro Takada, Tomo Takahashi,
Physical Review D, 79, (2), 023520, 2009, JAN 2009.
84. A Holographic Dual of Bjorken Flow,
Shunichiro Kinoshita, Shinji Mukohyama, ShinNakamura, Kin-ya Oda,
Progress Of Theoretical Physics, 121, (1), pp. 121-164,
2009, JAN 2009.
85. A general analysis of non-gaussianity from
isocurvature perturbations,
Masahiro Kawasaki, Kazunori Nakayama, Toyokazu
Sekiguchi, Teruaki Suyama, Fuminobu Takahashi,
Journal Of Cosmology And Astroparticle Physics, (1),042, 2009, JAN 2009.

75. Cosmological moduli problem from thermal
effects,
Kazunori Nakayama, Fuminobu Takahashi,
Physics Letters B, 670, (4-5), pp. 434-436, 2009, JAN
5 2009.

86. Hilltop non-gaussianity,
Masahiro Kawasaki, Kazunori Nakayama, Fuminobu
Takahashi,
Journal Of Cosmology And Astroparticle Physics, (1),026, 2009, JAN 2009.

76. SUBARU AND KECK OBSERVATIONS OF THE
PECULIAR TYPE IA SUPERNOVA 2006GZ AT
LATE PHASES,
K. Maeda, K. Kawabata, W. Li, M. Tanaka, P. A.
Mazzali, T. Hattori, K. Nomoto, A. V. Filippenko,
Astrophysical Journal, 690, (2), pp. 1745-1752, 2009,
JAN 10 2009.

87. Non-gaussianity from baryon asymmetry,
Masahiro Kawasaki, Kazunori Nakayama, Fuminobu
Takahashi,
Journal Of Cosmology And Astroparticle Physics, (1),002, 2009, JAN 2009.

77. Optical photometry and spectroscopy of the TypeIbn supernova SN 2006jc until the onset of dust
formation,
G. C. Anupama, D. K. Sahu, U. K. Gurugubelli, T. P.
Prabhu, N. Tominaga, M. Tanaka, K. Nomoto,Monthly Notices Of The Royal Astronomical Society,392, (2), pp. 894-903, 2009, JAN 11 2009.

Publications

46. Handling jets plus missing ET channel using
inclusive mT2,
Mihoko M. Nojiri, Kazuki Sakurai, Yasuhiro
Shimizu, Michihisa Takeuchi,
Journal Of High Energy Physics, (10), 100, 2008,
OCT 2008.

88. Implications to sources of ultra-high-energy
cosmic rays from their arrival distribution,
Hajime Takami, Katsuhiko Sato,
Astroparticle Physics, 30, (6), pp. 306-311, 2009, JAN
2009.

IPMU Annual Report 201081

90. GeV Majorana neutrinos in top-quark decay at the
LHC,
Zongguo Si, Kai Wang,
Physical Review D, 79, (1), 014034, 2009, JAN 2009.
91. Neutrino mixing and mass hierarchy in Gaussian
landscapes,
Lawrence J. Hall, Michael P. Salem, Taizan Watari,
Physical Review D, 79, (2), 025010, 2009, JAN 2009.
92. Anomalous gt(t)over-bar couplings in the littlest
Higgs model with T-parity,
Qing-Hong Cao, Chuan-Ren Chen, F. Larios, C.-P.
Yuan,
Physical Review D, 79, (1), 015004, 2009, JAN 2009.
93. STABILITY CONDITIONS AND CALABIYAUFIBRATIONS,
Yukinobu Toda,
Journal Of Algebraic Geometry, 18, (1), pp. 101-133,
2009, JAN 2009.
94. Future of neutrino experiments,
Takaaki Kajita,
Pramana-Journal Of Physics, 72, (1), pp. 109-117,
2009, JAN 2009.
95. SPECIAL RELATIVISTIC SIMULATIONS
OF MAGNETICALLY DOMINATED JETS IN
COLLAPSING MASSIVE STARS,Tomoya Takiwaki, Kei Kotake, Katsuhiko Sato,
Astrophysical Journal, 691, (2), pp. 1360-1379, 2009,
FEB 1 2009.
96. The Sunyaev-Zel’dovich effect and Faraday
rotation contributions of galaxy groups to the
CMB angular power spectrum,
Hiroyuki Tashiro, Joseph Silk, Mathieu Langer,
Naoshi Sugiyama,Monthly Notices Of The Royal Astronomical Society,392, (4), pp. 1421-1428, 2009, FEB 1 2009.
97. PROPERTIES OF NEWLY FORMED DUSTBY SN 2006JC BASED ON NEAR- TO
MIDINFRARED OBSERVATION WITH
AKARI,
I. Sakon, T. Onaka, T. Wada, Y. Ohyama, H. Kaneda,
D. Ishihara, T. Tanabe, T. Minezaki, Y. Yoshii, N.
Tominaga, K. Nomoto, T. Nozawa, T. Kozasa, M.
Tanaka, T. Suzuki, H. Umeda, S. Ohyabu, F. Usui, H.
Matsuhara, T. Nakagawa, H. Murakami,
Astrophysical Journal, 692, (1), pp. 546-555, 2009,
FEB 10 2009.
98. Current correlators for general gauge mediation,
Hirosi Ooguri, Yutaka Ookouchi, Chang-Soon Park,
Jaewon Song,
Nuclear Physics B, 808, (1-2), pp. 121-136, 2009, FEB
11 2009.
99. TYPE Ib SUPERNOVA 2008D ASSOCIATED
WITH THE LUMINOUS X-RAY TRANSIENT
080109: AN ENERGETIC EXPLOSION OF AMASSIVE HELIUM STAR,
Masaomi Tanaka, Nozomu Tominaga, Ken’ichi
Nomoto, S. Valenti, D. K. Sahu, T. Minezaki, Y.
Yoshii, M. Yoshida, G. C. Anupama, S. Benetti, G.
Chincarini, M. Della Valle, P. A. Mazzali, E. Pian,
Astrophysical Journal, 692, (2), pp. 1131-1142, 2009,
FEB 20 2009.

82

IPMU Annual Report 2010

100. Determining spin through quantum
azimuthalangle correlations,
Matthew R. Buckley, Seong Youl Choi, Kentarou
Mawatari, Hitoshi Murayama,
Physics Letters B, 672, (3), pp. 275-279, 2009, FEB
23 2009.
101. Neutrino signals from annihilating/decaying dark
matter in the light of recent measurements ofcosmic ray electron/positron fluxes,
Junji Hisano, Masahiro Kawasaki, Kazunori Kohri,
Kazunori Nakayama,
Physical Review D, 79, (4), 043516, 2009, FEB 2009.
102. Cosmic rays from leptonic dark matter,
Chuan-Ren Chen, Fuminobu Takahashi, Journal Of
Cosmology And Astroparticle
Physics, (2), 004, 2009, FEB 2009.
103. Apparent shape of super-spinning black holes,
Cosimo Bambi, Katherine Freese,Physical Review D, 79, (4), 043002, 2009, FEB 2009.
104. Band-power reconstruction of the primordial
fluctuation spectrum by the maximum likelihood
reconstruction method,
Ryo Nagata, Jun’ichi Yokoyama,
Physical Review D, 79, (4), 043010, 2009, FEB 2009.
105. Gravity with perturbative constraints: Dark
energy without new degrees of freedom,
Alan Cooney, Simon DeDeo, Dimitrios Psaltis,
Physical Review D, 79, (4), 044033, 2009, FEB 2009.
106. Mass measurement of the decaying Bino at the
LHC,
Shoji Asai, Yuya Azuma, Osamu Jinnouchi, Takeo
Moroi, Satoshi Shirai, T. T. Yanagida,
Physics Letters B, 672, (4-5), pp. 339-343, 2009,
MAR 2 2009.
107. A realistic extension of gauge-mediated
SUSYbreaking model with superconformal hidden
sector,
Masaki Asano, Junji Hisano, Takashi Okada, Shohei
Sugiyama,
Physics Letters B, 673, (2), pp. 146-151, 2009, MAR
16 2009.
108. GUT relations from string theory
compactifications,Radu Tatar, Talzan Watari,
Nuclear Physics B, 810, (1-2), pp. 316-353, 2009,
MAR 21 2009.
109. Observational characteristics and possible
asphericity of overluminous Type Ia supernovae,
Keiichi Maeda, Koichi Iwamoto,Monthly Notices Of The Royal Astronomical Society,394, (1), pp. 239-249, 2009, MAR 21 2009.
110. High-energy cosmic-ray positrons fromhiddengauge-boson dark matter,
Chuan-Ren Chen, Fuminobu Takahashi, T. T.
Yanagida,
Physics Letters B, 673, (4-5), pp. 255-259, 2009,
MAR 30 2009.
111. Cosmic ray positron and electron excess fromhidden-fermion dark matter decays,
Koichi Hamaguchi, Satoshi Shirai, T. T. Yanagida,
Physics Letters B, 673, (4-5), pp. 247-250, 2009,
MAR 30 2009.

112. Positron and gamma-ray signatures of dark
matter annihilation and big-bang nucleosynthesis,
Junji Hisano, Masahiro Kawasaki, Kazunori Kohri,
Kazunori Nakayama,
Physical Review D, 79, (6), 063514, 2009, MAR 2009.
113. Color sextet scalars at the CERN Large Hadron
Collider,Chuan-Ren Chen, William Klemm, Vikram Rentala,Kai Wang,
Physical Review D, 79, (5), 054002, 2009, MAR
2009.
114. Triplet scalars and dark matter at the LHC,
Pavel Fileviez Perez, Hiren H. Patel, Michael J.
Ramsey-Musolf, Kai Wang,
Physical Review D, 79, (5), 055024, 2009, MAR
2009.
115. ON THE DISTANCE BETWEEN TWO SEIFERTSURFACES OF A KNOT,
Makoto Sakuma, Kenneth J. Shackleton,
Osaka Journal Of Mathematics, 46, (1), pp. 203-221,
2009, MAR 2009.

JFY2009
1. SPECTRAL ENERGY DISTRIBUTION OF
RADIO SOURCES IN NEARBY CLUSTERS OFGALAXIES: IMPLICATIONS FOR SUNYAEVZEL’DOVICH EFFECT SURVEYS,
Yen-Ting Lin, Bruce Partridge, J. C. Pober, Khadija
El Bouchefry, Sarah Burke, Jonathan N. Klein, Joseph
W. Coish, Kevin M. Huffenberger,
Astrophysical Journal, 694, (2), pp. 992-1009, 2009,
APR 1 2009.
2. NUCLEOSYNTHESIS IN ELECTRONCAPTURE SUPERNOVAE OF ASYMPTOTIC
GIANT BRANCH STARS,
S. Wanajo, K. Nomoto, H. -T. Janka, F. S. Kitaura, B.
Mueller,
Astrophysical Journal, 695, (1), pp. 208-220, 2009,
APR 10 2009.
3. Search for Proton Decay via p → e +π0 and p →μ +π0 in a Large Water Cherenkov Detector,
H. Nishino, S. Clark, K. Abe, Y. Hayato, T. Iida,
M. Ikeda, J. Kameda, K. Kobayashi, Y. Koshio, M.
Miura, S. Moriyama, M. Nakahata, S. Nakayama,
Y. Obayashi, H. Ogawa, H. Sekiya, M. Shiozawa,Y. Suzuki, A. Takeda, Y. Takenaga, Y. Takeuchi,
K. Ueno, K. Ueshima, H. Watanabe, S. Yamada,
S. Hazama, I. Higuchi, C. Ishihara, T. Kajita, K.
Kaneyuki, G. Mitsuka, K. Okumura, N. Tanimoto, M.
R. Vagins, F. Dufour, E. Kearns, M. Litos, J. L. Raaf,
J. L. Stone, L. R. Sulak, W. Wang, M. Goldhaber,
S. Dazeley, R. Svoboda, K. Bays, D. Casper, J. P.
Cravens, W. R. Kropp, S. Mine, C. Regis, M. B. Smy,
H. W. Sobel, K. S. Ganezer, J. Hill, W. E. Keig, J. S.
Jang, J. Y. Kim, I. T. Lim, M. Fechner, K. Scholberg,
C. W. Walter, R. Wendell, S. Tasaka, J. G. Learned,
S. Matsuno, Y. Watanabe, T. Hasegawa, T. Ishida, T.
Ishii, T. Kobayashi, T. Nakadaira, K. Nakamura, K.
Nishikawa, Y. Oyama, K. Sakashita, T. Sekiguchi, T.
Tsukamoto, A. T. Suzuki, A.Minamino, T. Nakaya, M.
Yokoyama, Y. Fukuda, Y. Itow, T. Tanaka, C. K. Jung,
G. Lopez, C. McGrew, R. Terri, C. Yanagisawa, N.
Tamura, Y. Idehara, M. Sakuda, Y. Kuno, M. Yoshida,
S. B. Kim, B. S. Yang, T. Ishizuka, H. Okazawa,Y. Choi, H. K. Seo, Y. Furuse, K. Nishijima, Y.
Yokosawa, M. Koshiba, Y. Totsuka, S. Chen, Y. Heng,
Z. Yang, H. Zhang, D. Kielczewska, E. Thrane, R. J.
Wilkes,Physical Review Letters, 102, (14), 141801, 2009,
APR 10 2009.

4. Nucleosynthesis of Ni-56 in wind-driven supernova
explosions and constraints on the central engine of
gamma-ray bursts,
Keiichi Maeda, Nozomu Tominaga, Monthly Notices
Of The Royal Astronomical Society,394, (3), pp. 1317-1324, 2009, APR 11 2009.
5. Gravitational-Wave Background as a Probe of the
Primordial Black-Hole Abundance,
Ryo Saito, Jun’ichi Yokoyama,
Physical Review Letters, 102, (16), 161101, 2009,
APR 24 2009.
6. Emergent Calabi-Yau Geometry,
Hirosi Ooguri, Masahito Yamazaki,
Physical Review Letters, 102, (16), 161601, 2009,
APR 24 2009.
7. Decaying dark matter baryons in a composite
messenger model,
Koichi Hamaguchi, Eita Nakamura, Satoshi Shirai, T.
T. Yanagida,
Physics Letters B, 674, (4-5), pp. 299-302, 2009, APR
27 2009.
8. Cosmic rays from dark matter annihilation andbig-bang nucleosynthesis,
Junji Hisano, Masahiro Kawasaki, Kazunori Kohri,
Takeo Moroi, Kazunori Nakayama,
Physical Review D, 79, (8), 083522, 2009, APR 2009.
9. Nambu-Goldstone dark matter and cosmic ray
electron and positron excess,Masahiro Ibe, Yu Nakayama, Hitoshi Murayama,
Tsutomu T. Yanagida,
Journal Of High Energy Physics, (4), 087, 2009, APR
2009.
10. Cosmogenic neutrinos as a probe of the transition
from Galactic to extragalactic cosmic rays,
Hajime Takami, Kohta Murase, Shigehiro Nagataki,
Katsuhiko Sato,
Astroparticle Physics, 31, (3), pp. 201-211, 2009, APR
2009.
11. Probing nontensorial polarizations of stochastic
gravitational-wave backgrounds with groundbasedlaser interferometers,
Atsushi Nishizawa, Atsushi Taruya, Kazuhiro
Hayama, Seiji Kawamura, Masa-aki Sakagami,
Physical Review D, 79, (8), 082002, 2009, APR 2009.
12. Tensors, non-Gaussianities, and the future ofpotential reconstruction,
Brian A. Powell, Konstantinos Tzirakis, William H.
Kinney,Journal Of Cosmology And Astroparticle Physics, (4),019, 2009, APR 2009.

Publications

89. Nonlinear superhorizon perturbations of
noncanonical scalar field,
Yu-ichi Takamizu, Shinji Mukohyama,
Journal Of Cosmology And Astroparticle Physics, (1),013, 2009, JAN 2009.

13. Conformal inflation, modulated reheating, and
WMAP5,
Takeshi Kobayashi, Shinji Mukohyama,
Physical Review D, 79, (8), 083501, 2009, APR 2009.
14. The KamLAND full-volume calibration system,
B. E. Berger, J. Busenitz, T. Classen, M. P. Decowski,
D. A. Dwyer, G. Elor, A. Frank, S. J. Freedman, B.
K. Fujikawa, M. Galloway, F. Gray, K. M. Heeger, L.
Hsu, K. Ichimura, R. Kadel, G. Keefer, C. Lendvai,
D. McKee, T. O’Donnell, A. Piepke, H. M. Steiner, D.
Syversrud, J. Wallig, L. A. Winslow, T. Ebihara, S.
Enomoto, K. Furuno, Y. Gando, H. Ikeda, K. Inoue,
Y. Kibe, Y. Kishimoto, M. Koga, Y. Minekawa, T.
Mitsui, K. Nakajima, K. Nakajima, K. Nakamura, K.
Owada, I. Shimizu, Y. Shimizu, J. Shirai, F. Suekane,

IPMU Annual Report 201083

15. Photometric Variability in Earthshine
Observations,
Sally V. Langford, J. Stuart B. Wyithe, Edwin L.
Turner,Astrobiology, 9, (3), pp. 305-310, 2009, APR 2009.

20. The 21-cm signature of early relic H II regions,
Midori Tokutani, Naoki Yoshida, S. Peng Oh, Naoshi
Sugiyama,
Monthly Notices Of The Royal Astronomical Society,395, (2), pp. 777-780, 2009, MAY 11 2009.

16. A Possible Solution to the Strong CP Problem,
Fuminobu Takahashi,
Progress Of Theoretical Physics, 121, (4), pp. 711725, 2009, APR 2009.

21. EXTREMELY LUMINOUS SUPERNOVA
2006gy AT LATE PHASE: DETECTION OF
OPTICAL EMISSION FROM SUPERNOVA,
Koji S. Kawabata, Masaomi Tanaka, Keiichi
Maeda, Takashi Hattori, Ken’ichi Nomoto, Nozomu
Tominaga, Masayuki Yamanaka,
Astrophysical Journal, 697, (1), pp. 747-757, 2009,
MAY 20 2009.

17. Decaying hidden gaugino as a source of PAMELA/ATIC anomalies,
Satoshi Shirai, Fuminobu Takahashi, T. T. Yanagida,
Physics Letters B, 675, (1), pp. 73-76, 2009, MAY 4
2009.
18. The formation of the first stars and galaxies,
Volker Bromm, Naoki Yoshida, Lars Hernquist,
Christopher F. McKee,
Nature, 459, (7243), pp. 49-54, 2009, MAY 7 2009.
19. DECIGO pathfinder,
Masaki Ando, Seiji Kawamura, Shuichi Sato, Takashi
Nakamura, Kimio Tsubono, Akito Araya, Ikkoh
Funaki, Kunihito Ioka, Nobuyuki Kanda, Shigenori
Moriwaki, Mitsuru Musha, Kazuhiro Nakazawa,
Kenji Numata, Shin-ichiro Sakai, Naoki Seto, Takeshi
Takashima, Takahiro Tanaka, Kazuhiro Agatsuma,
Koh-suke Aoyanagi, Koji Arai, Hideki Asada,
Yoichi Aso, Takeshi Chiba, Toshikazu Ebisuzaki,
Yumiko Ejiri, Motohiro Enoki, Yoshiharu Eriguchi,
Masa-Katsu Fujimoto, Ryuichi Fujita, Mitsuhiro
Fukushima, Toshifumi Futamase, Katsuhiko Ganzu,
Tomohiro Harada, Tatsuaki Hashimoto, Kazuhiro
Hayama, Wataru Hikida, Yoshiaki Himemoto,Hisashi Hirabayashi, Takashi Hiramatsu, Feng-Lei
Hong, Hideyuki Horisawa, Mizuhiko Hosokawa,
Kiyotomo Ichiki, Takeshi Ikegami, Kaiki T.
Inoue, Koji Ishidoshiro, Hideki Ishihara, Takehiko
Ishikawa, Hideharu Ishizaki, Hiroyuki Ito, Yousuke
Itoh, Nobuki Kawashima, Fumiko Kawazoe,
Naoko Kishimoto, Kenta Kiuchi, Shiho Kobayashi,
Kazunori Kohri, Hiroyuki Koizumi, Yasufumi
Kojima, Keiko Kokeyama, Wataru Kokuyama, Kei
Kotake, Yoshihide Kozai, Hideaki Kudoh, Hiroo
Kunimori, Hitoshi Kuninaka, Kazuaki Kuroda,
Kei-ichi Maeda, Hideo Matsuhara, Yasushi Mino,
Osamu Miyakawa, Shinji Miyoki, Mutsuko Y.
Morimoto, Tomoko Morioka, Toshiyuki Morisawa,
Shinji Mukohyama, Shigeo Nagano, Isao Naito,
Kouji Nakamura, Hiroyuki Nakano, Kenichi Nakao,
Shinichi Nakasuka, Yoshinori Nakayama, Erina
Nishida, Kazutaka Nishiyama, Atsushi Nishizawa,
Yoshito Niwa, Taiga Noumi, Yoshiyuki Obuchi,
Masatake Ohashi, Naoko Ohishi, Masashi Ohkawa,
Norio Okada, Kouji Onozato, Kenichi Oohara,
Norichika Sago, Motoyuki Saijo, Masaaki Sakagami,
Shihori Sakata, Misao Sasaki, Takashi Sato, Masaru
Shibata, Hisaaki Shinkai, Kentaro Somiya, Hajime
Sotani, Naoshi Sugiyama, Yudai Suwa, Rieko Suzuki,
Hideyuki Tagoshi, Fuminobu Takahashi, Kakeru

84

Takahashi, Keitaro Takahashi, Ryutaro Takahashi,
Ryuichi Takahashi, Tadayuki Takahashi, Hirotaka
Takahashi, Takamori Akiteru, Tadashi Takano,
Keisuke Taniguchi, Atsushi Taruya, Hiroyuki
Tashiro, Yasuo Torii, Morio Toyoshima, Shinji
Tsujikawa, Yoshiki Tsunesada, Akitoshi Ueda, Kenichi Ueda, Masayoshi Utashima, Yaka Wakabayashi,
Hiroshi Yamakawa, Kazuhiro Yamamoto, Toshitaka
Yamazaki, Jun’ichi Yokoyama, Chul-Moon Yoo,
Shijun Yoshida, Taizoh Yoshino,Classical And Quantum Gravity, 26, (9), 094019,
2009, MAY 7 2009.

IPMU Annual Report 2010

22. The BROAD-LINE TYPE Ic SUPERNOVA SN
2007ru: ADDING TO THE DIVERSITY OF
TYPE Ic SUPERNOVAE,
D. K. Sahu, Masaomi Tanaka, G. C. Anupama, Uday
K. Gurugubelli, Ken’ichi Nomoto,
Astrophysical Journal, 697, (1), pp. 676-683, 2009,
MAY 20 2009.
23. SEARCH FOR NEUTRINOS FROM GRB
080319B AT SUPER-KAMIOKANDE,
E. Thrane, K. Abe, Y. Hayato, T. Iida, M. Ikeda, J.
Kameda, K. Kobayashi, Y. Koshio, M. Miura, S.
Moriyama, M. Nakahata, S. Nakayama, Y. Obayashi,
H. Ogawa, H. Sekiya, M. Shiozawa, Y. Suzuki, A.
Takeda, Y. Takenaga, Y. Takeuchi, K. Ueno, K.
Ueshima, H. Watanabe, S. Yamada, M. R. Vagins,
S. Hazama, I. Higuchi, C. Ishihara, T. Kajita, K.
Kaneyuki, G. Mitsuka, H. Nishino, K. Okumura, N.
Tanimoto, F. Dufour, E. Kearns, M. Litos, J. L. Raaf,
J. L. Stone, L. R. Sulak, M. Goldhaber, K. Bays, D.
Casper, J. P. Cravens, W. R. Kropp, S. Mine, C. Regis,
M. B. Smy, H. W. Sobel, K. S. Ganezer, J. Hill, W.
E. Keig, J. S. Jang, I. S. Jeong, J. Y. Kim, I. T. Lim,
M. Fechner, K. Scholberg, C. W. Walter, R. Wendell,S. Tasaka, J. G. Learned, S. Matsuno, Y. Watanabe,
T. Hasegawa, T. Ishida, T. Ishii, T. Kobayashi, T.
Nakadaira, K. Nakamura, K. Nishikawa, Y. Oyama,
K. Sakashita, T. Sekiguchi, T. Tsukamoto, A. T.
Suzuki, A. K. Ichikawa, A. Minamino, T. Nakaya,
M. Yokoyama, S. Dazeley, R. Svoboda, A. Habig, Y.
Fukuda, Y. Itow, T. Tanaka, C. K. Jung, G. Lopez,
C. McGrew, C. Yanagisawa, N. Tamura, Y. Idehara,
H. Ishino, A. Kibayashi, M. Sakuda, Y. Kuno,
M. Yoshida, S. B. Kim, B. S. Yang, T. Ishizuka,
H. Okazawa, Y. Choi, H. K. Seo, Y. Furuse, K.
Nishijima, Y. Yokosawa, M. Koshiba, Y. Totsuka, S.
Chen, G. Gong, Y. Heng, T. Xue, Z. Yang, H. Zhang,
D. Kielczewska, P. Mijakowski, H. G. Berns, K.
Connolly, M. Dziomba, R. J. Wilkes,
Astrophysical Journal, 697, (1), pp. 730-734, 2009,
MAY 20 2009.
24. Breit-Wigner enhancement of dark matterannihilation,
Masahiro Ibe, Hitoshi Murayama, T. T. Yanagida,
Physical Review D, 79, (9), 095009, 2009, MAY
2009.

25. Split universal extra dimension and dark matter,
Seong Chan Park, Jing Shu,
Physical Review D, 79, (9), 091702, 2009, MAY
2009.
26. Dark matter model selection and the ATIC/PPBBETS anomaly,
Chuan-Ren Chen, Koichi Hamaguchi, Mihoko M.
Nojiri, Fuminobu Takahashi, Shoji Torii,
Journal Of Cosmology And Astroparticle Physics, (5),015, 2009, MAY 2009.
27. CMB anisotropies at second order III: bispectrum
from products of the first-order perturbations,
Daisuke Nitta, Eiichiro Komatsu, Nicola Bartolo,
Sabino Matarrese, Antonio Riotto,
Journal Of Cosmology And Astroparticle Physics, (5),014, 2009, MAY 2009.
28. FIVE NEW HIGH-REDSHIFT QUASARLENSES FROM THE SLOAN DIGITAL SKYSURVEY,
Naohisa Inada, Masamune Oguri, Min-Su Shin,
Issha Kayo, Michael A. Strauss, Tomoki Morokuma,
Donald P. Schneider, Robert H. Becker, Neta A.
Bahcall, Donald G. York,
Astronomical Journal, 137, (5), pp. 4118-4126, 2009,
MAY 2009.
29. Chasing the nonlinear evolution of matter power
spectrum with a numerical resummation method:
Solution of closure equations,Takashi Hiramatsu, Atsushi Taruya,
Physical Review D, 79, (10), 103526, 2009, MAY
2009.
30. Precision calculations of the gravitational wave
background spectrum from inflation,
Sachiko Kuroyanagi, Takeshi Chiba, Naoshi
Sugiyama,
Physical Review D, 79, (10), 103501, 2009, MAY
2009.
31. Coset construction for duals of non-relativistic
CFTs,
Sakura Schaefer-Nameki, Masahito Yamazaki,
Kentaroh Yoshida,
Journal Of High Energy Physics, (5), 038, 2009,
MAY 2009.
32. Reheating a multi-throat universe by branemotion,Shinji Mukohyama,
General Relativity And Gravitation, 41, (5), pp. 11511163, 2009, MAY 2009.
33. First study of neutron tagging with a water
Cherenkov detector,
H. Watanabe, H. Zhang, K. Abe, Y. Hayato, T. Iida,
M. Ikeda, J. Kameda, K. Kobayashi, Y. Koshio, M.
Miura, S. Moriyama, M. Nakahata, S. Nakayama,
Y. Obayashi, H. Ogawa, H. Sekiya, M. Shiozawa,Y. Suzuki, A. Takeda, Y. Takenaga, Y. Takeuchi,
K. Ueno, K. Ueshima, S. Yamada, S. Hazama, I.
Higuchi, C. Ishihara, T. Kajita, K. Kaneyuki, G.
Mitsuka, H. Nishino, K. Okumura, N. Tanimoto, S.
Clark, S. Desai, F. Dufour, E. Kearns, S. Likhoded,
M. Litos, J. Raaf, J. L. Stone, L. R. Sulak, W. Wang,
M. Goldhaber, K. Bays, D. Casper, J. P. Cravens, J.
Dunmore, J. Griskevich, W. R. Kropp, D. W. Liu,
S. Mine, C. Regis, M. B. Smy, H. W. Sobel, K. S.
Ganezer, J. Hill, W. E. Keig, J. S. Jang, I. S. Jeong,
J. Y. Kim, I. T. Lim, M. Fechner, K. Scholberg, C.
W. Walter, R. Wendel, S. Tasaka, G. Guillian, J. G.
Learned, S. Matsuno, M. D. Messier, Y. Watanabe,

T. Hasegawa, T. Ishida, T. Ishii, T. Kobayashi, T.
Nakadaira, K. Nakamura, K. Nishikawa, Y. Oyama,
K. Sakashita, T. Sekiguchi, T. Tsukamoto, A. T.
Suzuki, A. K. Ichikawa, A. Minamino, T. Nakaya, M.
Yokoyama, T. J. Haines, S. Dazeley, R. Svoboda, R.
Gran, A. Habig, Y. Fukuda, Y. Itow, T. Tanaka, C. K.
Jung, C. McGrew, A. Sarrat, R. Terri, C. Yanagisawa,
N. Tamura, Y. Idehara, H. Ishino, A. Kibayashi, M.
Sakuda, Y. Kuno, M. Yoshida, S. B. Kim, B. S. Yang,
T. Ishizuka, H. Okazawa, Y. Choi, H. K. Seo, Y.
Furuse, K. Nishijima, Y. Yokosawa, M. Koshiba, Y.
Totsuka, M. R. Vagins, S. Chen, Z. Deng, G. Gong,
Y. Liu, T. Xue, D. Kielczewska, H. G. Berns, K. K.
Shiraishi, E. Thrane, R. J. Wilkes,
Astroparticle Physics, 31, (4), pp. 320-328, 2009,
MAY 2009.
34. Distillation of liquid xenon to remove krypton,
K. Abe, J. Hosaka, T. Iida, M. Ikeda, K. Kobayashi,
Y. Koshio, A. Minamino, M. Miura, S. Moriyama,
M. Nakahata, Y. Nakajima, T. Namba, H. Ogawa,H. Sekiya, M. Shiozawa, Y. Suzuki, A. Takeda, Y.
Takeuchi, K. Ueshima, M. Yamashita, K. Kaneyuki,
Y. Ebizuka, J. Kikuchi, A. Ota, S. Suzuki, T.
Takahashi, H. Hagiwara, T. Kamei, K. Miyamoto, T.
Nagase, S. Nakamura, Y. Ozaki, T. Sato, Y. Fukuda,
T. Sato, K. Nishijima, M. Sakurai, T. Maruyama, D.
Motoki, Y. Itow, H. Ohsumi, S. Tasaka, S. B. Kim,
Y. D. Kim, J. I. Lee, S. H. Moon, Y. Urakawa, M.
Uchino, Y. Kamioka,
Astroparticle Physics, 31, (4), pp. 290-296, 2009,
MAY 2009.
35. The interplay between “low” and “high” energy
CP-violation in leptogenesis,
E. Molinaro, S. T. Petcov,
European Physical Journal C, 61, (1), pp. 93-109,
2009, MAY 2009.
36. The impact of non-Gaussian errors on weaklensing surveys,
Masahiro Takada, Bhuvnesh Jain,
Monthly Notices Of The Royal Astronomical Society,395, (4), pp. 2065-2086, 2009, JUN 1 2009.
37. QUASAR CLUSTERING FROM SDSS DR5:
DEPENDENCES ON PHYSICAL PROPERTIES,Yue Shen, Michael A. Strauss, Nicholas P. Ross,
Patrick B. Hall, Yen-Ting Lin, Gordon T. Richards,
Donald P. Schneider, David H. Weinberg, Andrew J.
Connolly, Xiaohui Fan, Joseph F. Hennawi, Francesco
Shankar, Daniel E. Vanden Berk, Neta A. Bahcall,Robert J. Brunner,
Astrophysical Journal, 697, (2), pp. 1656-1673, 2009,
JUN 1 2009.
38. LUMINOUS RED GALAXY POPULATION IN
CLUSTERS AT 0.2 ≤ z ≤ 0.6,
Shirley Ho, Yen-Ting Lin, David Spergel, Christopher
M. Hirata,
Astrophysical Journal, 697, (2), pp. 1358-1368, 2009,
JUN 1 2009.

Publications

A. Suzuki, K. Tamae, S. Yoshida, A. Kozlov, H.
Murayama, C. Grant, D. S. Leonard, K-B. Luk, C.
Jillings, C. Mauger, R. D. McKeown, C. Zhang, C.
E. Lane, J. Maricic, T. Miletic, M. Batygov, J. G.
Learned, S. Matsuno, S. Pakvasa, J. Foster, G. A.
Horton-Smith, A. Tang, S. Dazeley, K. E. Downum, G.
Gratta, K. Tolich, W. Bugg, Y.
Efremenko, Y. Kamyshkov, O. Perevozchikov, H. J.
Karwowski, D. M. Markoff, W. Tornow, F. Piquemal,
J-S. Ricol,
Journal Of Instrumentation, 4, P04017, 2009, APR
2009.

39. Decaying gravitino dark matter and an upperbound on the gluino mass,
Koichi Hamaguchi, Fuminobu Takahashi, T. T.
Yanagida,
Physics Letters B, 677, (1-2), pp. 59-61, 2009, JUN 15
2009.
40. Runaway dynamics and supersymmetry breaking,K. -I. Izawa, Fuminobu Takahashi, T. T. Yanagida,Kazuya Yonekura,Physics Letters B, 677, (3-4), pp. 195-196, 2009, JUN
22 2009.

IPMU Annual Report 2010

85

86

IPMU Annual Report 2010

42. Scale-invariant cosmological perturbations from
Horava-Lifshitz gravity without inflation,
Shinji Mukohyama,
Journal Of Cosmology And Astroparticle Physics, (6),001, 2009, JUN 2009.
43. Fractional quantum Hall effect via holography:
Chern-Simons, edge states and hierarchy,
Mitsutoshi Fujita, Wei Li, Shinsei Ryu, Tadashi
Takayanagi,
Journal Of High Energy Physics, (6), 066, 2009, JUN
2009.
44. On string theory duals of Lifshitz-like fixed points,
Tatsuo Azeyanagi, Wei Li, Tadashi Takayanagi,
Journal Of High Energy Physics, (6), 084, 2009, JUN
2009.
45. Nonlinear evolution of the matter power spectrum
in modified theories of gravity,
Kazuya Koyama, Atsushi Taruya, Takashi Hiramatsu,
Physical Review D, 79, (12), 123512, 2009, JUN
2009.
46. Gravitational waves from the fragmentation of asupersymmetric condensate,
Alexander Kusenko, Anupam Mazumdar, Tuomas
Multamaki,
Physical Review D, 79, (12), 124034, 2009, JUN
2009.
47. Neutrino-induced reactions on Fe-56 and Ni-56,
and production of Mn-55 in population III stars,
Toshio Suzuki, Michio Honma, Koji Higashiyama,
Takashi Yoshida, Toshitaka Kajino, Takaharu Otsuka,
Hideyuki Umeda, Ken’ichi Nomoto,Physical Review C, 79, (6), 061603, 2009, JUN 2009.
48. Discriminating electroweak-ino parameterordering at the LHC and its impact on LFVstudies,Junji Hisano, Mihoko M. Nojiri, Warintorn
Sreethawong,
Journal Of High Energy Physics, (6), 044, 2009, JUN
2009.
49. Thermodynamic and dynamical stability of
Freund-Rubin compactification,
Shunichiro Kinoshita, Shinji Mukohyama,
Journal Of Cosmology And Astroparticle Physics, (6),020, 2009, JUN 2009.
50. Kinematic reconstruction of atmospheric neutrino
events in a large water Cherenkov detector with
proton identification,
M. Fechner, K. Abe, Y. Hayato, T. Iida, M. Ikeda,
J. Kameda, K. Kobayashi, Y. Koshio, M. Miura, S.
Moriyama, M. Nakahata, S. Nakayama, Y. Obayashi,
H. Ogawa, H. Sekiya, M. Shiozawa, Y. Suzuki, A.
Takeda, Y. Takenaga, Y. Takeuchi, K. Ueno, K.
Ueshima, H. Watanabe, S. Yamada, S. Hazama, I.
Higuchi, C. Ishihara, T. Kajita, K. Kaneyuki, G.
Mitsuka, H. Nishino, K. Okumura, N. Tanimoto, M.
R. Vagins, F. Dufour, E. Kearns, M. Litos, J. L. Raaf,
J. L. Stone, L. R. Sulak, W. Wang, M. Goldhaber,
S. Dazeley, R. Svoboda, K. Bayes, D. Casper, J. P.
Cravens, W. R. Kropp, S. Mine, C. Regis, M. B. Smy,
H. W. Sobel, K. S. Ganezer, J. Hill, W. E. Keig, J.
S. Jang, J. Y. Kim, I. T. Lim, K. Scholberg, C. W.
Walter, R. Wendell, S. Tasaka, J. G. Learned, S.
Matsuno, Y. Watanabe, T. Hasegawa, T. Ishida, T.
Ishii, T. Kobayashi, T. Nakadaira, K. Nakamura, K.
Nishikawa, Y. Oyama, K. Sakashita, T. Sekiguchi, T.
Tsukamoto, A. T. Suzuki, A.Minamino, T. Nakaya,
M. Yokoyama, Y. Fukuda, Y. Itow, T. Tanaka, C. K.

Jung, G. Lopez, C. McGrew, R. Terri, C. Yanagisawa,
N. Tamura, Y. Idehara, M. Sakuda, Y. Kuno,
M. Yoshida, S. B. Kim, B. S. Yang, T. Ishizuka,
H. Okazawa, Y. Choi, H. K. Seo, Y. Furuse, K.
Nishijima, Y. Yokosawa, M. Koshiba, Y. Totsuka, S.
Chen, Y. Heng, Z. Yang, H. Zhang, D. Kielczewska, E.
Thrane, R. J. Wilkes,
Physical Review D, 79, (11), 112010, 2009, JUN 2009.
51. CONFIGURATION OF THE CENTRALSTREAMS IN THE MODULI OF ABELIANVARIETIES,Shushi Harashita,
Asian Journal Of Mathematics, 13, (2), pp. 215-250,
2009, JUN 2009.
52. Cross-correlation between UHECR arrival
distribution and large-scale structure,
Hajime Takami, Takahiro Nishimichi, Kazuhiro
Yahata, Katsuhiko Sato,
Journal Of Cosmology And Astroparticle Physics, (6),031, 2009, JUN 2009.
53. LoCuSS: luminous infrared galaxies in themerging cluster Abell 1758 at z=0.28,
C. P. Haines, G. P. Smith, E. Egami, N. Okabe, M.
Takada, R. S. Ellis, S. M. Moran, K. Umetsu,
Monthly Notices Of The Royal Astronomical Society,396, (3), pp. 1297-1307, 2009, JUL 1 2009.
54. Upward muon signals at neutrino detectors as aprobe of dark matter properties,
Junji Hisano, Kazunori Nakayama, Masaki J. S.
Yang,
Physics Letters B, 678, (1), pp. 101-106, 2009, JUL 6
2009.
55. Gravitino dark matter and non-Gaussianity,
Tomo Takahashi, Masahide Yamaguchi, Jun’ichi
Yokoyama, Shuichiro Yokoyama,
Physics Letters B, 678, (1), pp. 15-19, 2009, JUL 6
2009.
56. SPECTROPOLARIMETRY OF THE UNIQUE
TYPE Ib SUPERNOVA 2005bf: LARGER
ASYMMETRY REVEALED BY LATER-PHASE
DATA,
Masaomi Tanaka, Koji S. Kawabata, Keiichi Maeda,
Masanori Iye, Takashi Hattori, Elena Pian, Ken’ichi
Nomoto, Paolo A. Mazzali, Nozomu Tominaga,
Astrophysical Journal, 699, (2), pp. 1119-1124, 2009,
JUL 10 2009.
57. LIMIT STABLE OBJECTS ON CALABI-YAU
3-FOLDS,
Yukinobu Toda,
Duke Mathematical Journal, 149, (1), pp. 157-208,
2009, JUL 15 2009.
58. ON THE SPIN-ORBIT MISALIGNMENT OF
THE XO-3 EXOPLANETARY SYSTEM,
Joshua N. Winn, John Asher Johnson, Daniel
Fabrycky, Andrew W. Howard, Geoffrey W. Marcy,
Norio Narita, Ian J. Crossfield, Yasushi Suto, Edwin L.
Turner, Gil Esquerdo, Matthew J. Holman,
Astrophysical Journal, 700, (1), pp. 302-308, 2009,
JUL 20 2009.
59. NEW LIMITS ON STERILE NEUTRINOS
FROM SUZAKU OBSERVATIONS OF THE
URSA MINOR DWARF SPHEROIDALGALAXY,
Michael Loewenstein, Alexander Kusenko, Peter L.
Biermann,
Astrophysical Journal, 700, (1), pp. 426-435, 2009,
JUL 20 2009.

60. SIMULATIONS OF BARYON ACOUSTICOSCILLATIONS. II. COVARIANCE MATRIXOF THE MATTER POWER SPECTRUM,
Ryuichi Takahashi, Naoki Yoshida, Masahiro Takada,
Takahiko Matsubara, Naoshi Sugiyama, Issha Kayo,
Atsushi J. Nishizawa, Takahiro Nishimichi, Shun
Saito, Atsushi Taruya,
Astrophysical Journal, 700, (1), pp. 479-490, 2009,
JUL 20 2009.
61. NEUTRINO OSCILLATIONS: DISCOVERY,CURRENT STATUS, FUTURE DIRECTIONS,
Takaaki Kajita,
International Journal Of Modern Physics A, 24, (1819), pp. 3437-3446, 2009, JUL 30 2009.
62. ABJM with flavors and FQHE,
Yasuaki Hikida, Wei Li, Tadashi Takayanagi,
Journal Of High Energy Physics, (7), 065, 2009, JUL
2009.
63. Diffuse gamma-ray background and cosmic-ray
positrons from annihilating dark matter,
Masahiro Kawasaki, Kazunori Kohri, Kazunori
Nakayama,
Physical Review D, 80, (2), 023517, 2009, JUL 2009.
64. Neutrinoless double beta decay and H ±± → l’± l±decays in the Higgs triplet model,
S. T. Petcov, H. Sugiyama, Y. Takanishi,
Physical Review D, 80, (1), 015005, 2009, JUL 2009.
65. Neutrinos from the terrestrial passage ofsupersymmetric dark-matter Q-balls,
Alexander Kusenko, Ian M. Shoemaker,
Physical Review D, 80, (2), 027701, 2009, JUL 2009.
66. Curvatons in warped throats,
Takeshi Kobayashi, Shinji Mukohyama,
Journal Of Cosmology And Astroparticle Physics, (7),032, 2009, JUL 2009.
67. Constraints on neutrino masses from WMAP5and BBN in the lepton asymmetric universe,
Maresuke Shiraishi, Kazuhide Ichikawa, Kiyotomo
Ichiki, Naoshi Sugiyama, Masahide Yamaguchi,
Journal Of Cosmology And Astroparticle Physics, (7),005, 2009, JUL 2009.
68. Axion isocurvature fluctuations with extremely
blue spectrum,
Shinta Kasuya, Masahiro Kawasaki,
Physical Review D, 80, (2), 023516, 2009, JUL 2009.
69. Growth functions for Artin monoids,
Kyoji Saito,
Proceedings Of The Japan Academy Series
AMathematical Sciences, 85, (7), pp. 84-88, 2009,
JUL 2009.

Publications

41. THE SEVENTH DATA RELEASE OF THE
SLOAN DIGITAL SKY SURVEY,
Kevork N. Abazajian, Jennifer K. AdelmanMcCarthy, Marcel A. Agueros, Sahar S. Allam,
Carlos Allende Prieto, Deokkeun An, Kurt S. J.
Anderson, Scott F. Anderson, James Annis, Neta A.
Bahcall, C. A. L. Bailer-Jones, J. C. Barentine, Bruce
A. Bassett, Andrew C. Becker, Timothy C. Beers,
Eric F. Bell, Vasily Belokurov, Andreas A. Berlind,
Eileen F. Berman, Mariangela Bernardi, Steven
J. Bickerton, Dmitry Bizyaev, John P. Blakeslee,
Michael R. Blanton, John J. Bochanski, William N.
Boroski, Howard J. Brewington, Jarle Brinchmann,
J. Brinkmann, Robert J. Brunner, Tamas Budavari,
Larry N. Carey, Samuel Carliles, Michael A. Carr,
Francisco J. Castander, David Cinabro, A. J. Connolly,
Istvan Csabai, Carlos E. Cunha, Paul C. Czarapata,
James R. A. Davenport, Ernst de Haas, Ben Dilday,
Mamoru Doi, Daniel J. Eisenstein, Michael L. Evans,
N. W. Evans, Xiaohui Fan, Scott D. Friedman, Joshua
A. Frieman, Masataka Fukugita, Boris T. Gansicke,
Evalyn Gates, Bruce Gillespie, G. Gilmore, Belinda
Gonzalez, Carlos F. Gonzalez, Eva K. Grebel, JamesE. Gunn, Zsuzsanna Gyory, Patrick B. Hall, Paul
Harding, Frederick H. Harris, Michael Harvanek,
Suzanne L. Hawley, Jeffrey J. E. Hayes, Timothy M.
Heckman, John S. Hendry, Gregory S. Hennessy,
Robert B. Hindsley, J. Hoblitt, Craig J. Hogan, DavidW. Hogg, Jon A. Holtzman, Joseph B. Hyde, Shin-ichi
Ichikawa, Takashi Ichikawa, Myungshin Im, Zeljko
Ivezic, Sebastian Jester, Linhua Jiang, Jennifer A.
Johnson, Anders M. Jorgensen, Mario Juric, Stephen
M. Kent, R. Kessler, S. J. Kleinman, G. R. Knapp,
Kohki Konishi, Richard G. Kron, Jurek Krzesinski,
Nikolay Kuropatkin, Hubert Lampeitl, Svetlana
Lebedeva, Myung Gyoon Lee, Young Sun Lee, R.
French Leger, Sebastien Lepine, Nolan Li, Marcos
Lima, Huan Lin, Daniel C. Long, Craig P. Loomis,
Jon Loveday, Robert H. Lupton, Eugene Magnier,
Olena Malanushenko, Viktor Malanushenko, Rachel
Mandelbaum, Bruce Margon, John P. Marriner,David Martinez-Delgado, Takahiko Matsubara,
PeregrineM.McGehee, Timothy A.McKay, Avery
Meiksin, Heather L. Morrison, Fergal Mullally,
Jeffrey A. Munn, Tara Murphy, Thomas Nash,
Ada Nebot, Jr. Eric H. Neilsen, Heidi Jo Newberg,Peter R. Newman, Robert C. Nichol, Tom Nicinski,
Maria Nieto-Santisteban, Atsuko Nitta, Sadanori
Okamura, Daniel J. Oravetz, Jeremiah P. Ostriker,
Russell Owen, Nikhil Padmanabhan, Kaike Pan,
Changbom Park, George Pauls, Jr. John Peoples, Will
J. Percival, Jeffrey R. Pier, Adrian C. Pope, Dimitri
Pourbaix, Paul A. Price, Norbert Purger, Thomas
Quinn, M. Jordan Raddick, Paola Re Fiorentin,
Gordon T. Richards, Michael W. Richmond, Adam
G. Riess, Hans-Walter Rix, Constance M. Rockosi,
Masao Sako, David J. Schlegel, Donald P. Schneider,
Ralf-Dieter Scholz, Matthias R. Schreiber, Axel D.
Schwope, Uros Seljak, Branimir Sesar, Erin Sheldon,
Kazu Shimasaku, Valena C. Sibley, A. E. Simmons,Thirupathi Sivarani, J. Allyn Smith, Martin C. Smith,
Vernesa Smolcic, Stephanie A. Snedden, Albert
Stebbins, Matthias Steinmetz, Chris Stoughton,
Michael A. Strauss, Mark SubbaRao, Yasushi Suto,
Alexander S. Szalay, Istvan Szapudi, Paula Szkody,
Masayuki Tanaka, Max Tegmark, Luis F. A. Teodoro,
Aniruddha R. Thakar, Christy A. Tremonti, Douglas
L. Tucker, Alan Uomoto, Daniel E. Vanden Berk, Jan
Vandenberg, S. Vidrih, Michael S. Vogeley, Wolfgang
Voges, Nicole P. Vogt, Yogesh Wadadekar, Shannon
Watters, David H. Weinberg, Andrew A. West, Simon
D. M. White, Brian C. Wilhite, Alainna C. Wonders,
Brian Yanny, D. R. Yocum, Donald G. York, Idit
Zehavi, Stefano Zibetti, Daniel B. Zucker,
Astrophysical Journal Supplement Series, 182, (2),pp. 543-558, 2009, JUN 2009.

70. Axion braneworld cosmology,
Cosimo Bambi, Masahiro Kawasaki, Federico R.
Urban,
Physical Review D, 80, (2), 023533, 2009, JUL 2009.
71. Cosmological Constraints on a Massive Neutrino,
Masahiro Kawasaki, Katsuhiko Sato,
Progress Of Theoretical Physics, 122, (1), pp. 205217, 2009, JUL 2009.

IPMU Annual Report 20108773. NEBULAR PHASE OBSERVATIONS OF
THE TYPE Ib SUPERNOVA 2008D/X-RAY
TRANSIENT 080109: SIDE-VIEWED BIPOLAR
EXPLOSION,
Masaomi Tanaka, Masayuki Yamanaka, Keiichi
Maeda, Koji S. Kawabata, Takashi Hattori, Takeo
Minezaki, Stefano Valenti, Massimo Della Valle,
D. K. Sahu, G. C. Anupama, Nozomu Tominaga,
Ken’ichi Nomoto, Paolo A. Mazzali, Elena Pian,
Astrophysical Journal, 700, (2), pp. 1680-1685, 2009,
AUG 1 2009.
74. The renormalizability of Horava-Lifshitz-typegravities,
Domenico Orlando, Susanne Reffert,
Classical And Quantum Gravity, 26, (15), 155021,
2009, AUG 7 2009.
75. Phenomenological aspects of Horava-Lifshitz
cosmology,
Shinji Mukohyama, Kazunori Nakayama, Fuminobu
Takahashi, Shuichiro Yokoyama,
Physics Letters B, 679, (1), pp. 6-9, 2009, AUG 10
2009.
76. SIMULATIONS OF WIDE-FIELD WEAK
LENSING SURVEYS. I. BASIC STATISTICS
AND NON-GAUSSIAN EFFECTS,
Masanori Sato, Takashi Hamana, Ryuichi Takahashi,
Masahiro Takada, Naoki Yoshida, TakahikoMatsubara, Naoshi Sugiyama,
Astrophysical Journal, 701, (2), pp. 945-954, 2009,
AUG 20 2009.
77. SUBARU HIGH-RESOLUTION
SPECTROSCOPY OF STAR G IN THE TYCHO
SUPERNOVA REMNANT,
Wolfgang E. Kerzendorf, Brian P. Schmidt, M.
Asplund, Ken’ichi Nomoto, Ph. Podsiadlowski, Anna
Frebel, Robert A. Fesen, David Yong,
Astrophysical Journal, 701, (2), pp. 1665-1672, 2009,
AUG 20 2009.
78. Decaying Hidden Gauge Boson and the PAMELA
and ATIC/PPB-BETS Anomalies,
Chuan-Ren Chen, Mihoko M. Nojiri, Fuminobu
Takahashi, Tsutomu T. Yanagida,
Progress Of Theoretical Physics, 122, (2), pp. 553559, 2009, AUG 2009.
79. Nuclear Force from String Theory,
Koji Hashimoto, Tadakatsu Sakai, Shigeki Sugimoto,
Progress Of Theoretical Physics, 122, (2), pp. 427476, 2009, AUG 2009.
80. Strongly coupled semidirect mediation ofsupersymmetry breaking,
M. Ibe, K. -I. Izawa, Y. Nakai,
Physical Review D, 80, (3), 035002, 2009, AUG 2009.
81. Early Black Hole formation by accretion of gas
and dark matter,
Hideyuki Umeda, Naoki Yoshida, Ken’ichi Nomoto,
Sachiko Tsuruta, Mei Sasaki, Takuya Ohkubo,
Journal Of Cosmology And Astroparticle Physics, (8),024, 2009, AUG 2009.

88

IPMU Annual Report 2010

82. Constraining light gravitino mass from cosmic
microwave background,
Kazuhide Ichikawa, Masahiro Kawasaki, Kazunori
Nakayama, Toyokazu Sekiguchi, Tomo Takahashi,
Journal Of Cosmology And Astroparticle Physics, (8),013, 2009, AUG 2009.
83. The onset of star formation in primordial haloes,
U. Maio, B. Ciardi, N. Yoshida, K. Dolag, L.
Tornatore,
Astronomy & Astrophysics, 503, (1), pp. 25-34, 2009,
AUG 2009.
84. The R-axion and non-Gaussianity,
Kazunori Nakayama, Fuminobu Takahashi,
Physics Letters B, 679, (5), pp. 436-439, 2009, SEP 7
2009.
85. Noncommutative resolution, F-blowups andDmodules,Yukinobu Toda, Takehiko Yasuda,
Advances In Mathematics, 222, (1), pp. 318-330,
2009, SEP 10 2009.
86. Formation of Nuclear “ Pasta” in Supernovae,
Gentaro Watanabe, Hidetaka Sonoda, Toshiki
Maruyama, Katsuhiko Sato, Kenji Yasuoka,
Toshikazu Ebisuzaki,
Physical Review Letters, 103, (12), 121101, 2009, SEP
18 2009.
87. Inverse problem for the propagation equation ofcosmic-ray electrons/positrons from dark matter,
Koichi Hamaguchi, Kouhei Nakaji, Eita Nakamura,Physics Letters B, 680, (2), pp. 172-178, 2009, SEP 21
2009.
88. Dark matter as integration constant in HoravaLifshitz gravity,
Shinji Mukohyama,
Physical Review D, 80, (6), 064005, 2009, SEP 2009.
89. Caustic avoidance in Horava-Lifshitz gravity,
Shinji Mukohyama,
Journal Of Cosmology And Astroparticle Physics, (9),005, 2009, SEP 2009.

94. Large vertical bar U-e3 vertical bar andtribimaximal mixing,
Srubabati Goswami, Serguey T. Petcov, Shamayita
Ray, Werner Rodejohann,Physical Review D, 80, (5), 053013, 2009, SEP 2009.
95. Cosmological constraints on rapid roll inflation,
Takeshi Kobayashi, Shinji Mukohyama, Brian A.
Powell,Journal Of Cosmology And Astroparticle Physics, (9),023, 2009, SEP 2009.
96. Ghost condensate and generalized second law,
Shinji Mukohyama,
Journal Of High Energy Physics, (9), 070, 2009, SEP
2009.
97. Non-thermal gravitino dark matter in gauge
mediation,
Koichi Hamaguchi, Ryuichiro Kitano, Fuminobu
Takahashi,
Journal Of High Energy Physics, (9), 127, 2009, SEP
2009.
98. Successive extensions of minimal p-divisiblegroups,Shushi Harashita,
Journal Of Pure And Applied Algebra, 213, (9), pp.
1823-1834, 2009, SEP 2009.
99. Topological string on OSP(1|2)/U(1),Gaston Giribet, Yasuaki Hikida, Tadashi Takayanagi,
Journal Of High Energy Physics, (9), 001, 2009, SEP
2009.
100. SN 2003bg: A BROAD-LINED TYPE IIb
SUPERNOVA WITH HYDROGEN,
Paolo A. Mazzali, Jinsong Deng, Mario Hamuy,
Ken’ichi Nomoto,
Astrophysical Journal, 703, (2), pp. 1624-1634, 2009,
OCT 1 2009.
101. Measuring Lifetimes of Long-Lived Charged
Massive Particles Stopped in LHC Detectors,
Shoji Asai, Koichi Hamaguchi, Satoshi Shirai,
Physical Review Letters, 103, (14), 141803, 2009,
OCT 2 2009.

90. Sterile neutrinos: The dark side of the lightfermions,
Alexander Kusenko,
Physics Reports-Review Section Of Physics Letters,
481, (1-2), pp. 1-28, 2009, SEP 2009.

102. A test for light gravitino scenario at the LHC,
Satoshi Shirai, T. T. Yanagida,
Physics Letters B, 680, (4), pp. 351-354, 2009, OCT 5
2009.

91. Non-Gaussianity from isocurvature perturbations:analysis of trispectrum,
Etsuko Kawakami, Masahiro Kawasaki, Kazunori
Nakayama, Fuminobu Takahashi,
Journal Of Cosmology And Astroparticle Physics, (9),002, 2009, SEP 2009.

103. Novel Reconstruction Technique for New Physics
Processes with Initial State Radiation,
Johan Alwall, Kenji Hiramastsu, MihokoM. Nojiri,
Yasuhiro Shimizu,
Physical Review Letters, 103, (15), 151802, 2009,
OCT 9 2009.

92. Majorana phases and leptogenesis in see-saw
models with A(4) symmetry,
C. Hagedorn, E. Molinaro, S. T. Petcov,
Journal Of High Energy Physics, (9), 115, 2009, SEP
2009.

104. SEARCH FOR ASTROPHYSICAL NEUTRINO
POINT SOURCES AT SUPERKAMIOKANDE,
E. Thrane, K. Abe, Y. Hayato, T. Iida, M. Ikeda, J.
Kameda, K. Kobayashi, Y. Koshio, M. Miura, S.
Moriyama, M. Nakahata, S. Nakayama, Y. Obayashi,
H. Ogawa, H. Sekiya, M. Shiozawa, Y. Suzuki, A.
Takeda, Y. Takenaga, Y. Takeuchi, K. Ueno, K.
Ueshima, H. Watanabe, S. Yamada, M. R. Vagins,
S. Hazama, I. Higuchi, C. Ishihara, T. Kajita, K.
Kaneyuki, G. Mitsuka, H. Nishino, K. Okumura, N.
Tanimoto, F. Dufour, E. Kearns, M. Litos, J. L. Raaf,
J. L. Stone, L. R. Sulak, M. Goldhaber, K. Bays, D.
Casper, J. P. Cravens, W. R. Kropp, S. Mine, C. Regis,
M. B. Smy, H. W. Sobel, K. S. Ganezer, J. Hill, W.
E. Keig, J. S. Jang, I. S. Jeong, J. Y. Kim, I. T. Lim,93. Dark matter and collider phenomenology of splitUED,
Chuan-Ren Chen, Mihoko M. Nojiri, Seong Chan
Park, Jing Shu, Michihisa Takeuchi,
Journal Of High Energy Physics, (9), 078, 2009, SEP
2009.

M. Fechner, K. Scholberg, C. W. Walter, R. Wendell,S. Tasaka, J. G. Learned, S. Matsuno, Y. Watanabe,
T. Hasegawa, T. Ishida, T. Ishii, T. Kobayashi, T.
Nakadaira, K. Nakamura, K. Nishikawa, Y. Oyama,
K. Sakashita, T. Sekiguchi, T. Tsukamoto, A. T.
Suzuki, A. K. Ichikawa, A. Minamino, T. Nakaya,
M. Yokoyama, S. Dazeley, R. Svoboda, A. Habig, Y.
Fukuda, Y. Itow, T. Tanaka, C. K. Jung, G. Lopez,
C. McGrew, C. Yanagisawa, N. Tamura, Y. Idehara,
H. Ishino, A. Kibayashi, M. Sakuda, Y. Kuno,
M. Yoshida, S. B. Kim, B. S. Yang, T. Ishizuka,
H. Okazawa, Y. Choi, H. K. Seo, Y. Furuse, K.
Nishijima, Y. Yokosawa, M. Koshiba, Y. Totsuka, S.
Chen, G. Gong, Y. Heng, T. Xue, Z. Yang, H. Zhang,
D. Kielczewska, P. Mijakowski, K. Connolly, M.
Dziomba, R. J. Wilkes,
Astrophysical Journal, 704, (1), pp. 503-512, 2009,
OCT 10 2009.
105. WILL THE LARGE SYNOPTIC SURVEYTELESCOPE DETECT EXTRA-SOLAR
PLANETESIMALS ENTERING THE SOLARSYSTEM?,
Amaya Moro-Martin, Edwin L. Turner, Abraham
Loeb,
Astrophysical Journal, 704, (1), pp. 733-742, 2009,
OCT 10 2009.
106. R-violating decay ofWino dark matter andelectron/ positron excesses in the PAMELA/Fermi
experiments,
Satoshi Shirai, Fuminobu Takahashi, T. T. Yanagida,
Physics Letters B, 680, (5), pp. 485-488, 2009, OCT
12 2009.
107. Sterile neutrinos,
Alexander Kusenko,
New Journal Of Physics, 11, 105007, 2009, OCT 16
2009.
108. Physics at a future Neutrino Factory andsuperbeam facility,
A. Bandyopadhyay, S. Choubey, R. Gandhi, S.
Goswami, B. L. Roberts, J. Bouchez, I. Antoniadis,
J. Ellis, G. F. Giudice, T. Schwetz, S. Umasankar,
G. Karagiorgi, A. Aguilar-Arevalo, J. M. Conrad,
M. H. Shaevitz, S. Pascoli, S. Geer, J. E. Campagne,
M. Rolinec, A. Blondel, M. Campanelli, J. Kopp,
M. Lindner, J. Peltoniemi, P. J. Dornan, K. Long,
T. Matsushita, C. Rogers, Y. Uchida, M. Dracos, K.
Whisnant, D. Casper, Mu-Chun Chen, B. Popov,
J. Aysto, D. Marfatia, Y. Okada, H. Sugiyama, K.
Jungmann, J. Lesgourgues, M. Zisman, M. A. Tortola,
A. Friedland, S. Davidson, S. Antusch, C. Biggio,
A. Donini, E. Fernandez-Martinez, B. Gavela, M.
Maltoni, J. Lopez-Pavon, S. Rigolin, N. Mondal, V.
Palladino, F. Filthaut, C. Albright, A. de Gouvea,
Y. Kuno, Y. Nagashima, M. Mezzetto, S. Lola, P.
Langacker, A. Baldini, H. Nunokawa, D. Meloni,
M. Diaz, S. F. King, K. Zuber, A. G. Akeroyd, Y.
Grossman, Y. Farzan, K. Tobe, Mayumi Aoki, H.
Murayama, N. Kitazawa, O. Yasuda, S. Petcov, A.
Romanino, P. Chimenti, A. Vacchi, A. Yu Smirnov,
E. Couce, J. J. Gomez-Cadenas, P. Hernandez, M.
Sorel, J. W. F. Valle, P. F. Harrison, C. Lunardini, J. K.
Nelson, V. Barger, L. Everett, P. Huber, W. Winter, W.
Fetscher, A. van der Schaaf,
Reports On Progress In Physics, 72, (10), 106201,
2009, OCT 2009.

Publications

72. Nebular emission-line profiles of Type Ib/c
supernovae- probing the ejecta asphericity,
S. Taubenberger, S. Valenti, S. Benetti, E. Cappellaro,
M. Della Valle, N. Elias-Rosa, S. Hachinger, W.
Hillebrandt, K. Maeda, P. A. Mazzali, A. Pastorello, F.
Patat, S. A. Sim, M. Turatto,
Monthly Notices Of The Royal Astronomical Society,397, (2), pp. 677-694, 2009, AUG 1 2009.

109. Some no-go theorems for string duals ofnonrelativistic Lifshitz-like theories,
Wei Li, Tatsuma Nishioka, Tadashi Takayanagi,
Journal Of High Energy Physics, (10), 015, 2009,
OCT 2009.

IPMU Annual Report 201089

111. Nonlinear power spectrum in the presence ofmassive neutrinos: Perturbation theory approach,galaxy bias, and parameter forecasts,
Shun Saito, Masahiro Takada, Atsushi Taruya,
Physical Review D, 80, (8), 083528, 2009, OCT 2009.
112. Conformal supersymmetry breaking in vectorlike
gauge theories,
K-I Izawa, Fuminobu Takahashi, T. T. Yanagida,Kazuya Yonekura,Physical Review D, 80, (8), 085017, 2009, OCT 2009.
113. LHC signature of supersymmetric models with
non-universal sfermion masses,
Sung-Gi Kim, Nobuhiro Maekawa, Keiko I. Nagao,
Mihoko M. Nojiri, Kazuki Sakurai,
Journal Of High Energy Physics, (10), 005, 2009,
OCT 2009.
114. Half-BPS quotients in M-theory: ADE with atwist,Paul de Medeiros, Jose Figueroa-O’Farrill, Sunil
Gadhia, Elena Mendez-Escobar,
Journal Of High Energy Physics, (10), 038, 2009,
OCT 2009.
115. CONSTRUCTING CONVEX PLANES IN THE
PANTS COMPLEX,
Javier Aramayona, Hugo Parlier, Kenneth J.
Shackleton,
Proceedings Of The AmericanMathematical Society,137, (10), pp. 3523-3531, 2009, OCT 2009.
116. On the Realization of MSSM Inflation,
Kohei Kamada, Jun’ichi Yokoyama,
Progress Of Theoretical Physics, 122, (4), pp. 969986, 2009, OCT 2009.
117. PROPERTIES OF TYPE II PLATEAUSUPERNOVA SNLS-04D2dc: MULTICOLOR
LIGHT CURVES OF SHOCK BREAKOUT AND
PLATEAU,
N. Tominaga, S. Blinnikov, P. Baklanov, T.
Morokuma, K. Nomoto, T. Suzuki,
Astrophysical Journal Letters, 705, (1), pp. L10-L14,
2009, NOV 1 2009.
118. The initial shear field in models with primordial
local non-Gaussianity and implications for halo
and void abundances,
Tsz Yan Lam, Ravi K. Sheth, Vincent Desjacques,
Monthly Notices Of The Royal Astronomical Society,399, (3), pp. 1482-1494, 2009, NOV 1 2009.
119. Implications of primordial black holes on the firststars and the origin of the super-massive black
holes,
Cosimo Bambi, Douglas Spolyar, Alexander D.
Dolgov, Katherine Freese, Marta Volonteri,Monthly Notices Of The Royal Astronomical Society,399, (3), pp. 1347-1356, 2009, NOV 1 2009.
120. Simplicity in the Faulkner construction,
Jose Figueroa-O’Farrill,
Journal Of Physics A-Mathematical And Theoretical,
42, (44), 445206, 2009, NOV 6 2009.

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IPMU Annual Report 2010

121. AKARI INFRARED OBSERVATIONS OF
THE SUPERNOVA REMNANT G292.0+1.8:
UNVEILING CIRCUMSTELLAR MEDIUM
AND SUPERNOVA EJECTA,
Ho-Gyu Lee, Bon-Chul Koo, Dae-Sik Moon, Itsuki
Sakon, Takashi Onaka, Woong-Seob Jeong, Hidehiro
Kaneda, Takaya Nozawa, Takashi Kozasa,
Astrophysical Journal, 706, (1), pp. 441-453, 2009,
NOV 20 2009.
122. B → Kπ puzzle and new sources of CP violation insupersymmetry,
S. Khalil, A. Masiero, H. Murayama,
Physics Letters B, 682, (1), pp. 74-77, 2009, NOV 232009.
123. FIRST-YEAR SLOAN DIGITAL SKYSURVEY-II SUPERNOVA RESULTS:
HUBBLE DIAGRAM AND COSMOLOGICALPARAMETERS,
Richard Kessler, Andrew C. Becker, David Cinabro,
Jake Vanderplas, Joshua A. Frieman, John Marriner,
Tamara M. Davis, Benjamin Dilday, Jon Holtzman,
Saurabh W. Jha, Hubert Lampeitl, Masao Sako,
Mathew Smith, Chen Zheng, Robert C. Nichol, Bruce
Bassett, Ralf Bender, Darren L. Depoy, Mamoru Doi,Ed Elson, Alexei V. Filippenko, Ryan J. Foley, Peter
M. Garnavich, Ulrich Hopp, Yutaka Ihara, William
Ketzeback, W. Kollatschny, Kohki Konishi, Jennifer
L. Marshall, Russet J. McMillan, Gajus Miknaitis,
Tomoki Morokuma, Edvard Mortsell, Kaike Pan,
Jose Luis Prieto, Michael W. Richmond, Adam G.
Riess, Roger Romani, Donald P. Schneider, Jesper
Sollerman, Naohiro Takanashi, Kouichi Tokita, Kurt
van der Heyden, J. C. Wheeler, Naoki Yasuda, Donald
York,
Astrophysical Journal Supplement Series, 185, (1), pp.
32-84, 2009, NOV 2009.
124. ANALYTIC SOLUTION FOR MATTERDENSITY PERTURBATIONS IN A CLASS OF
VIABLE COSMOLOGICAL f(R) MODELS,
Hayato Motohashi, Alexei A. Starobinsky, Jun’Ichi
Yokoyama,
International Journal Of Modern Physics D, 18, (11),pp. 1731-1740, 2009, NOV 2009.
125. Flavor effects on the electric dipole moments insupersymmetric theories: A beyond leading orderanalysis,Junji Hisano, Minoru Nagai, Paride Paradisi,
Physical Review D, 80, (9), 095014, 2009, NOV 2009.
126. Accretion process onto super-spinning objects,
Cosimo Bambi, Katherine Freese, Tomohiro Harada,
Rohta Takahashi, Naoki Yoshida,
Physical Review D, 80, (10), 104023, 2009, NOV
2009.
127. Crystal Melting and Toric Calabi-Yau Manifolds,
Hirosi Ooguri, Masahito Yamazaki,
Communications In Mathematical Physics, 292, (1),pp. 179-199, 2009, NOV 2009.
128. Cosmic ray spectra in Nambu-Goldstone dark
matter models,
Masahiro Ibe, Hitoshi Murayama, Satoshi Shirai,
Tsutomu T. Yanagida,
Journal Of High Energy Physics, (11), 120, 2009,
NOV 2009.

129. Like-sign dilepton signals in Higgsless models at
the LHC,
Tao Han, Hai-shan Liu, Ming-xing Luo, Kai Wang,
Wei Wu,Physical Review D, 80, (9), 095010, 2009, NOV 2009.
130. Cosmic-Ray Electron and Positron Excesses from
Hidden Gaugino Dark Matter,
Satoshi Shirai, Fuminobu Takahashi, Tsutomu T.
Yanagida,
Progress Of Theoretical Physics, 122, (5), pp. 12771284, 2009, NOV 2009.
131. EVOLUTION OF VERY MASSIVE
POPULATION III STARS WITH MASS
ACCRETION FROM PRE-MAIN SEQUENCE
TO COLLAPSE,
Takuya Ohkubo, Ken’ichi Nomoto, Hideyuki Umeda,
Naoki Yoshida, Sachiko Tsuruta,
Astrophysical Journal, 706, (2), pp. 1184-1193, 2009,
DEC 1 2009.

139. Nonlinear evolution of baryon acoustic oscillations
from improved perturbation theory in real andredshift spaces,
Atsushi Taruya, Takahiro Nishimichi, Shun Saito,
Takashi Hiramatsu,
Physical Review D, 80, (12), 123503, 2009, DEC
2009.
140. Primordial magnetic field from noninflationary
cosmic expansion in Horava-Lifshitz gravity,
Satoshi Maeda, Shinji Mukohyama, Tetsuya
Shiromizu,
Physical Review D, 80, (12), 123538, 2009, DEC
2009.
141. Density fluctuations in thermal inflation and nonGaussianity,
Masahiro Kawasaki, Tomo Takahashi, Shuichiro
Yokoyama,
Journal Of Cosmology And Astroparticle Physics,(12), 012, 2009, DEC 2009.

132. Superpotentials for superconformal Chern-Simons
theories from representation theory,
Paul de Medeiros, Jose Figueroa-O’Farrill, Elena
Mendez-Escobar,
Journal Of Physics A-Mathematical And Theoretical,
42, (48), 485204, 2009, DEC 4 2009.

142. Constraints on moduli cosmology fromthe production of dark matter and baryon
isocurvature fluctuations,
Martin Lemoine, Jerome Martin, Jun’ichi Yokoyama,
Physical Review D, 80, (12), 123514, 2009, DEC
2009.

133. Codimension-3 singularities and Yukawa
couplings in F-theory,
Hirotaka Hayashi, Teruhiko Kawano, Radu Tatar,
Taizan Watari,
Nuclear Physics B, 823, (1-2), pp. 47-115, 2009, DEC
11 2009.

143. Waiting for μ → eγ from the MEG experiment,
Junji Hisano, Minoru Nagai, Paride Paradisi,
Yasuhiro Shimizu,
Journal Of High Energy Physics, (12), 030, 2009,
DEC 2009.

134. Right-handed neutrinos in F-theory
compactifications,Radu Tatar, Yoichi Tsuchiya, Taizan Watari,
Nuclear Physics B, 823, (1-2), pp. 1-46, 2009, DEC 112009.
135. Holographic entanglement entropy: an overview,
Tatsuma Nishioka, Shinsei Ryu, Tadashi Takayanagi,
Journal Of Physics A-Mathematical And Theoretical,
42, (50), 504008, 2009, DEC 18 2009.
136. EARLY PHASE OBSERVATIONS OF
EXTREMELY LUMINOUS TYPE Ia
SUPERNOVA 2009dc,
M. Yamanaka, K. S. Kawabata, K. Kinugasa, M.
Tanaka, A. Imada, K. Maeda, K. Nomoto, A. Arai, S.
Chiyonobu, Y. Fukazawa, O. Hashimoto, S. Honda,
Y. Ikejiri, R. Itoh, Y. Kamata, N. Kawai, T. Komatsu,
K. Konishi, D. Kuroda, H. Miyamoto, S. Miyazaki, O.
Nagae, H. Nakaya, T. Ohsugi, T. Omodaka, N. Sakai,
M. Sasada, M. Suzuki, H. Taguchi, H. Takahashi, H.
Tanaka, M. Uemura, T. Yamashita, K. Yanagisawa, M.
Yoshida,Astrophysical Journal Letters, 707, (2), pp.
L118-L122, 2009, DEC 20 2009.
137. THE ROLE OF TYPE Ia SUPERNOVAE IN
CHEMICAL EVOLUTION. I. LIFETIME OF
TYPE Ia SUPERNOVAE AND METALLICITYEFFECT,
Chiaki Kobayashi, Ken’ichi Nomoto,
Astrophysical Journal, 707, (2), pp. 1466-1484, 2009,
DEC 20 2009.
138. Horava-Lifshitz holography,
Tatsuma Nishioka,
Classical And Quantum Gravity, 26, (24), 242001,
2009, DEC 21 2009.

144. Some hybrid types of Q balls in gauge-mediatedsupersymmetry breaking,
Shinta Kasuya, Masahiro Kawasaki,
Physical Review D, 80, (12), 123529, 2009, DEC
2009.
145. O(Nc) and USp(Nc) QCD from String Theory,
Toshiya Imoto, Tadakatsu Sakai, Shigeki Sugimoto,
Progress Of Theoretical Physics, 122, (6), pp. 14331453, 2009, DEC 2009.
146. Geometry as seen by string theory,
Hirosi Ooguri,
Japanese Journal Of Mathematics, 4, (2), pp. 95-120,
2009, DEC 2009.
147. Improved Measurement of the RossiterMcLaughlin Effect in the Exoplanetary System
HD 17156,
Norio Narita, Teruyuki Hirano, Bun’ei Sato, Joshua
N. Winn, Yasushi Suto, Edwin L. Turner, Wako Aoki,
Motohide Tamura, Toru Yamada,Publications Of The Astronomical Society Of Japan,
61, (5), pp. 991-997, 2009.

Publications

110. Circumventing the eta problem in building an
inflationary model in string theory,
Damien A. Easson, Ruth Gregory,Physical Review D, 80, (8), 083518, 2009, OCT 2009.

148. Modeling Nonlinear Evolution of Baryon Acoustic
Oscillations: Convergence Regime of N-body
Simulations and Analytic Models,
Takahiro Nishimichi, Akihito Shirata, AtsushiTaruya,
Kazuhiro Yahata, Shun Saito, Yasushi Suto, Ryuichi
Takahashi, Naoki Yoshida, Takahiko Matsubara,
Naoshi Sugiyama, Issha Kayo, Yipeng Jing, Kohji
Yoshikawa,
Publications Of The Astronomical Society Of Japan,
61, (2), pp. 321-332, 2009.

IPMU Annual Report 201091

160. Relating field theories via stochastic quantization,
Robbert Dijkgraaf, Domenico Orlando, SusanneReffert,
Nuclear Physics B, 824, (3), pp. 365-386, 2010, JAN
11 2010.

171. Gravitational wave background and nonGaussianity as a probe of the curvaton scenario,
Kazunori Nakayama, Jun’ichi Yokoyama,
Journal Of Cosmology And Astroparticle Physics, (1),010, 2010, JAN 2010.

183. Multiple main sequence of globular clusters as aresult of inhomogeneous big bang nucleosynthesis,
Takashi Moriya, Toshikazu Shigeyama,
Physical Review D, 81, (4), 043004, 2010, FEB 152010.

150. No Evidence for Variability of Intervening
Absorption Lines toward GRB 060206:
Implications for the Mg II Incidence Problem,
Kentaro Aoki, Tomonori Totani, Takashi Hattori,
Kouji Ohta, Koji S. Kawabata, Naoto Kobayashi,
Masanori Iye, Ken’ichi Nomoto, Nobuyuki Kawai,
Publications Of The Astronomical Society Of Japan,
61, (2), pp. 387-394, 2009.

161. Tests of gravity from imaging and spectroscopic
surveys,
Jacek Guzik, Bhuvnesh Jain, Masahiro Takada,Physical Review D, 81, (2), 023503, 2010, JAN 152010.

172. Higgs mechanism and loop-induced decays of ascalar into two Z bosons,Qing-Hong Cao, C. B. Jackson, Wai-Yee Keung, Ian
Low, Jing Shu,
Physical Review D, 81, (1), 015010, 2010, JAN 2010.

162. Observational signatures of gravitational
couplings in DBI inflation,
Damien A. Easson, Shinji Mukohyama, Brian A.
Powell,Physical Review D, 81, (2), 023512, 2010, JAN 152010.

151. New Anomalies in Topological String Theory,
Paul L. H. Cook, Hirosi Ooguri, Jie Yang,
Progress Of Theoretical Physics Supplement, (177),
pp. 120-127, 2009.

163. Tilting generators via ample line bundles,
Yukinobu Toda, Hokuto Uehara,
Advances In Mathematics, 223, (1), pp. 1-29, 2010,
JAN 15 2010.

173. Constraining the time variation of the coupling
constants from cosmic microwave background:
effect of Lambda(QCD),
Masahiro Nakashima, Kazuhide Ichikawa, Ryo
Nagata, Jun’ichi Yokoyama,
Journal Of Cosmology And Astroparticle Physics, (1),030, 2010, JAN 2010.

184. IS COSMIC RAY ELECTRON EXCESSFROM PULSARS SPIKY OR SMOOTH?:CONTINUOUS AND MULTIPLE ELECTRON/POSITRON INJECTIONS,
Norita Kawanaka, Kunihito Ioka, Mihoko M. Nojiri,
Astrophysical Journal, 710, (2), pp. 958-963, 2010,
FEB 20 2010.

152. Notes on Bosonization with Boundary,
Kentaro Hori,
Progress Of Theoretical Physics Supplement, (177),
pp. 42-53, 2009.

164. Numerical study of primordial magnetic field
amplification by inflation-produced gravitational
waves,
Sachiko Kuroyanagi, Hiroyuki Tashiro, Naoshi
Sugiyama,
Physical Review D, 81, (2), 023510, 2010, JAN 152010.

153. Properties of Baryons from D-Branes andInstantons,
Shigeki Sugimoto,
Progress Of Theoretical Physics Supplement, (177),
pp. 165-175, 2009.
154. Yoji Totsuka (1942-2008) and the Discovery of
Neutrino Mass,
Henry W. Sobel, Yoichiro Suzuki,
Annual Review Of Nuclear And Particle Science, 59,
pp. 41-46, 2009.
155. Dynamical SUSY Breaking in SQCD: 25 Years
Later,
Ken-Iti Izawa,
Progress Of Theoretical Physics Supplement, (180),
pp. 154-159, 2009.
156. Supersymmetric non-relativistic geometries inM-theory,
Hirosi Ooguri, Chang-Soon Park,
Nuclear Physics B, 824, (1-2), pp. 136-153, 2010, JAN
1 2010.
157. Bar complex, configuration spaces and finite typeinvariants for braids,
Toshitake Kohno,
Topology And Its Applications, 157, (1), pp. 2-9, 2010,
JAN 1 2010.
158. NEBULAR SPECTRA AND EXPLOSION
ASYMMETRY OF TYPE Ia SUPERNOVAE,
K. Maeda, S. Taubenberger, J. Sollerman, P. A.
Mazzali, G. Leloudas, K. Nomoto, K. Motohara,
Astrophysical Journal, 708, (2), pp. 1703-1715, 2010,
JAN 10 2010.
159. On the perturbative expansion around a Lifshitz
point,
Domenico Orlando, Susanne Reffert,
Physics Letters B, 683, (1), pp. 62-68, 2010, JAN 11
2010.

92

IPMU Annual Report 2010

165. ANALYTIC DESCRIPTION OF THE
ROSSITER-MCLAUGHLIN EFFECTFOR TRANSITING EXOPLANETS:
CROSSCORRELATION METHOD AND
COMPARISON WITH SIMULATED DATA,
Teruyuki Hirano, Yasushi Suto, Atsushi Taruya,
Norio Narita, Bun’ei Sato, John Asher Johnson,
Joshua N. Winn,
Astrophysical Journal, 709, (1), pp. 458-469, 2010,
JAN 20 2010.
166. Axigluon as possible explanation for pp¯ → tt¯
forward-backward asymmetry,
Paul H. Frampton, Jing Shu, Kai Wang,
Physics Letters B, 683, (4-5), pp. 294-297, 2010, JAN
25 2010.
167. Top quark forward-backward asymmetry fromnew t-channel physics,
Sunghoon Jung, Hitoshi Murayama, Aaron Pierce,
James D. Wells,
Physical Review D, 81, (1), 015004, 2010, JAN 2010.
168. Gamma-ray constraints on hadronic and leptonic
activities of decaying dark matter,
Chuan-Ren Chen, Sourav K. Mandal, Fuminobu
Takahashi,
Journal Of Cosmology And Astroparticle Physics, (1),023, 2010, JAN 2010.
169. High-energy neutrino signatures of dark matter,
Matthew R. Buckley, Douglas Spolyar, Katherine
Freese, Dan Hooper, Hitoshi Murayama,
Physical Review D, 81, (1), 016006, 2010, JAN 2010.
170. LUMINOSITY FUNCTIONS OF TYPE Ia
SUPERNOVAE AND THEIR HOST GALAXIESFROM THE SLOAN DIGITAL SKY SURVEY,
Naoki Yasuda, Masataka Fukugita,
Astronomical Journal, 139, (1), pp. 39-52, 2010, JAN
2010.

174. The moduli problem at the perturbative level,
M. Lemoine, J. Martin, J. Yokoyama,
Epl, 89, (2), 29001, 2010, JAN 2010.

185. Charged lepton flavour violating radiative
decays l(i) → l(j)+γ in see-saw models with A(4)symmetry,
C. Hagedorn, E. Molinaro, S. T. Petcov,
Journal Of High Energy Physics, (2), 047, 2010, FEB
2010.

178. Gravity dual of spatially modulated phase,
Shin Nakamura, Hirosi Ooguri, Chang-Soon Park,
Physical Review D, 81, (4), 044018, 2010, FEB 15
2010.

186. Production of radioactive isotopes through cosmic
muon spallation in KamLAND,
S. Abe, S. Enomoto, K. Furuno, Y. Gando, H. Ikeda,
K. Inoue, Y. Kibe, Y. Kishimoto, M. Koga, Y.
Minekawa, T. Mitsui, K. Nakajima, K. Nakajima, K.
Nakamura, M. Nakamura, I. Shimizu, Y. Shimizu,
J. Shirai, F. Suekane, A. Suzuki, Y. Takemoto, K.
Tamae, A. Terashima, H. Watanabe, E. Yonezawa,
S. Yoshida, A. Kozlov, H. Murayama, J. Busenitz,
T. Classen, C. Grant, G. Keefer, D. S. Leonard, D.
McKee, A. Piepke, T. I. Banks, T. Bloxham, J. A.
Detwiler, S. J. Freedman, B. K. Fujikawa, F. Gray,
E. Guardincerri, L. Hsu, K. Ichimura, R. Kadel, C.
Lendvai, K. -B. Luk, T. O’Donnell, H. M. Steiner,
L. A.Winslow, D. A. Dwyer, C. Jillings, C. Mauger,
R. D. McKeown, P. Vogel, C. Zhang, B. E. Berger,
C. E. Lane, J. Maricic, T. Miletic, M. Batygov, J. G.
Learned, S. Matsuno, S. Pakvasa, J. Foster, G. A.
Horton-Smith, A. Tang, S. Dazeley, K. E. Downum,
G. Gratta, K. Tolich, W. Bugg, Y. Efremenko, Y.
Kamyshkov, O. Perevozchikov, H. J. Karwowski, D.
M. Markoff, W. Tornow, K. M. Heeger, F. Piquemal, J.
-S. Ricol, M. P. Decowski,
Physical Review C, 81, (2), 025807, 2010, FEB 2010.

179. Stellar center is dynamical in Horava-Lifshitz
gravity,
Keisuke Izumi, Shinji Mukohyama,
Physical Review D, 81, (4), 044008, 2010, FEB 15
2010.

187. Probing the primordial power spectra with
inflationary priors,
Masahiro Kawasaki, Toyokazu Sekiguchi,
Journal Of Cosmology And Astroparticle Physics, (2),013, 2010, FEB 2010.

180. Implications of CDMS-II result on Higgs sector in
the MSSM,
Junji Hisano, Kazunori Nakayama, Masato
Yamanaka,
Physics Letters B, 684, (4-5), pp. 246-250, 2010, FEB
15 2010.

188. Studying Gaugino Mass in Semi-Direct Gauge
Mediation,
Masahiro Ibe, Ken-iti Izawa, Yuichiro Nakai,
Progress Of Theoretical Physics, 123, (2), pp. 237255, 2010, FEB 2010.

175. Explorations of the top quark forward-backward
asymmetry at the Tevatron,
Jing Shu, Tim M. P. Tait, Kai Wang,
Physical Review D, 81, (3), 034012, 2010, FEB1 2010.
176. SIMULATIONS OF THE MICROWAVE SKY,
Neelima Sehgal, Paul Bode, Sudeep Das, Carlos
Hernandez-Monteagudo, Kevin Huffenberger, YenTing Lin, Jeremiah P. Ostriker, Hy Trac,
Astrophysical Journal, 709, (2), pp. 920-936, 2010,
FEB 1 2010.
177. Neutralino dark matter in gauge mediation in lightof CDMS-II,
Masahiro Ibe, Tsutomu T. Yanagida,
Physical Review D, 81, (3), 035017, 2010, FEB 1 2010.

181. Cascade events at IceCube plus DeepCore
as a definitive constraint on the dark matterinterpretation of the PAMELA and Fermi
anomalies,
Sourav K. Mandal, Matthew R. Buckley, Katherine
Freese, Douglas Spolyar, Hitoshi Murayama,
Physical Review D, 81, (4), 043508, 2010, FEB 152010.
182. Relaxing a constraint on the number of messengers
in a low-scale gauge mediation,
Ryosuke Sato, T. T. Yanagida, Kazuya Yonekura,Physical Review D, 81, (4), 045003, 2010, FEB 15
2010.

189. Lepton flavor violation and cosmologicalconstraints on R-parity violation,
Motoi Endo, Koichi Hamaguchi, Sho Iwamoto,
Journal Of Cosmology And Astroparticle Physics, (2),032, 2010, FEB 2010.

Publications

149. Toward First-Principle Simulations of Galaxy
Formation: II. Shock-Induced Starburst at a
Collision Interface during the First Encounter ofInteracting Galaxies,
Takayuki R. Saitoh, Hiroshi Daisaka, Eiichiro
Kokubo, Junichiro Makino, Takashi Okamoto, Kohji
Tomisaka, Keiichi Wada, Naoki Yoshida,
Publications Of The Astronomical Society Of Japan,
61, (3), pp. 481-486, 2009.

¯
190. Invisible Higgs boson decay with B→ Kννconstraint,
C. S. Kim, Seong Chan Park, Kai Wang, Guohuai
Zhu,
Physical Review D, 81, (5), 054004, 2010, MAR 1
2010.

IPMU Annual Report 201093

192. Supernova, baryon acoustic oscillations, and CMB
surface distance constraints on f(G) higher order
gravity models,
Jacob Moldenhauer, Mustapha Ishak, John Thompson,
Damien A. Easson,
Physical Review D, 81, (6), 063514, 2010, MAR 152010.
193. NUCLEOSYNTHESIS IN TWO-DIMENSIONAL
DELAYED DETONATION MODELS OF TYPE
Ia SUPERNOVA EXPLOSIONS,
K. Maeda, F. K. Roepke, M. Fink, W. Hillebrandt, C.
Travaglio, F. -K. Thielemann,
Astrophysical Journal, 712, (1), pp. 624-638, 2010,
MAR 20 2010.
194. Topological dark matter,
Hitoshi Murayama, Jing Shu,
Physics Letters B, 686, (2-3), pp. 162-165, 2010, MAR
22 2010.
195. Goldstini,
Clifford Cheung, Yasunori Nomura, Jesse Thaler,
Journal Of High Energy Physics, (3), 073, 2010, MAR2010.
196. Holographic superconductor/insulator transitionat zero temperature,
Tatsuma Nishioka, Shinsei Ryu, Tadashi Takayanagi,
Journal Of High Energy Physics, (3), 131, 2010, MAR
2010.
197. A new interpretation of the gamma-ray
observations of distant active galactic nuclei,
Warren Essey, Alexander Kusenko,
Astroparticle Physics, 33, (2), pp. 81-85, 2010, MAR
2010.
198. Freeze-in production of FIMP dark matter,
Lawrence J. Hall, Karsten Jedamzik, John MarchRussell, Stephen M. West,
Journal Of High Energy Physics, (3), 080, 2010,
MAR 2010.
199. Low scale direct gauge mediation with
perturbatively stable vacuum,
Ryosuke Sato, Kazuya Yonekura,
Journal Of High Energy Physics, (3), 017, 2010, MAR
2010.
200. Phenomenological aspects of gauge mediation withsequestered supersymmetry breaking in light ofdark matter detection,
Motoi Endo, Satoshi Shirai, Kazuya Yonekura,
Journal Of High Energy Physics, (3), 052, 2010, MAR
2010.
201. The non-linear redshift space probability
distribution function in models with local
primordial non-Gaussianity,
Tsz Yan Lam, Vincent Desjacques, Ravi K. Sheth,
Monthly Notices Of The Royal Astronomical Society,402, (4), pp. 2397-2402, 2010, MAR 2010.
202. A finely-predicted Higgs boson mass from a finelytuned weak scale,
Lawrence J. Hall, Yasunori Nomura,
Journal Of High Energy Physics, (3), 076, 2010, MAR
2010.

94

IPMU Annual Report 2010

JFY2010
1. Hypernovae, gamma-ray bursts, and first stars,
Ken’ichi Nomoto, Masaomi Tanaka, Nozomu
Tominaga, Keiichi Maeda,
New Astronomy Reviews, 54, (3-6), pp. 191-200,
2010, MAR-JUN 2010.
2. THE LABOCA SURVEY OF THE EXTENDED
CHANDRA DEEP FIELD SOUTH: TWO
MODES OF STAR FORMATION IN ACTIVEGALACTIC NUCLEUS HOSTS?,
D. Lutz, V. Mainieri, D. Rafferty, L. Shao, G.
Hasinger, A. Weiss, F. Walter, I. Smail, D. M.
Alexander, W. N. Brandt, S. Chapman, K. Coppin, N.
M. Foerster Schreiber, E. Gawiser, R. Genzel, T. R.
Greve, R. J. Ivison, A. M. Koekemoer, P. Kurczynski,
K. M. Menten, R. Nordon, P. Popesso, E. Schinnerer, J.
D. Silverman, J. Wardlow, Y. Q. Xue,
Astrophysical Journal, 712, (2), pp. 1287-1301, 2010,
APR 1 2010.
3. Secondary Photons and Neutrinos from Cosmic
Rays Produced by Distant Blazars,
Warren Essey, Oleg E. Kalashev, Alexander Kusenko,
John F. Beacom,
Physical Review Letters, 104, (14), 141102, 2010,
APR 9 2010.
4. FORMATION AND EVOLUTION OF DUST IN
TYPE IIb SUPERNOVAE WITH APPLICATION
TO THE CASSIOPEIA A SUPERNOVAREMNANT,
Takaya Nozawa, Takashi Kozasa, Nozomu Tominaga,
Keiichi Maeda, Hideyuki Umeda, Ken’ichi Nomoto,
Oliver Krause,
Astrophysical Journal, 713, (1), pp. 356-373, 2010,
APR 10 2010.
5. Forecast constraints on inflation from combined
CMB and gravitational wave direct detection
experiments,
Sachiko Kuroyanagi, Christopher Gordon, Joseph
Silk, Naoshi Sugiyama,
Physical Review D, 81, (8), 083524, 2010, APR 15
2010.
6. Cosmic discordance: Detection of a modulation in
the primordial fluctuation spectrum,
Kiyotomo Ichiki, Ryo Nagata, Jun’ichi Yokoyama,
Physical Review D, 81, (8), 083010, 2010, APR 15
2010.
7. GAMMA-RAY CONSTRAINTS ON DECAYINGDARK MATTER,
Chuan-Ren Chen, Sourav K. Mandal, Fuminobu
Takahashi,
Modern Physics Letters A, 25, (11-12), pp. 969-975,
2010, APR 20 2010.
8. X-ray groups and clusters of galaxies in the
Subaru-XMM Deep Field,
A. Finoguenov, M. G. Watson, M. Tanaka, C.
Simpson, M. Cirasuolo, J. S. Dunlop, J. A. Peacock,D. Farrah, M. Akiyama, Y. Ueda, V. Smolcic, G.
Stewart, S. Rawlings, C. van Breukelen, O. Almaini,
L. Clewley, D. G. Bonfield, M. J. Jarvis, J. M. Barr, S.
Foucaud, R. J. McLure, K. Sekiguchi, E. Egami,Monthly Notices Of The Royal Astronomical Society,403, (4), pp. 2063-2076, 2010, APR 21 2010.

9. DECIGO and DECIGO pathfinder,
Masaki Ando, Seiji Kawamura, Naoki Seto, Shuichi
Sato, Takashi Nakamura, Kimio Tsubono, Takeshi
Takashima, Ikkoh Funaki, Kenji Numata, Nobuyuki
Kanda, Takahiro Tanaka, Kunihito Ioka, Kazuhiro
Agatsuma, Koh-suke Aoyanagi, Koji Arai, Akito
Araya, Hideki Asada, Yoichi Aso, Takeshi Chiba,
Toshikazu Ebisuzaki, Yumiko Ejiri, Motohiro Enoki,
Yoshiharu Eriguchi, Masa-Katsu Fujimoto, Ryuichi
Fujita, Mitsuhiro Fukushima, Toshifumi Futamase,Tomohiro Harada, Tatsuaki Hashimoto, Kazuhiro
Hayama, Wataru Hikida, Yoshiaki Himemoto,Hisashi Hirabayashi, Takashi Hiramatsu, Feng-Lei
Hong, Hideyuki Horisawa, Mizuhiko Hosokawa,
Kiyotomo Ichiki, Takeshi Ikegami, Kaiki T. Inoue,
Koji Ishidoshiro, Hideki Ishihara, Takehiko Ishikawa,
Hideharu Ishizaki, Hiroyuki Ito, Yousuke Itoh,Kiwamu Izumi, Isao Kawano, Nobuki Kawashima,
Fumiko Kawazoe, Naoko Kishimoto, Kenta Kiuchi,
Shiho Kobayashi, Kazunori Kohri, Hiroyuki
Koizumi, Yasufumi Kojima, Keiko Kokeyama,
Wataru Kokuyama, Kei Kotake, Yoshihide Kozai,
Hiroo Kunimori, Hitoshi Kuninaka, Kazuaki
Kuroda, Keiichi Maeda, Hideo Matsuhara, Yasushi
Mino, Osamu Miyakawa, Umpei Miyamoto, Shinji
Miyoki, Mutsuko Y. Morimoto, Toshiyuki Morisawa,
Shigenori Moriwaki, Shinji Mukohyama, Mitsuru
Musha, Shigeo Nagano, Isao Naito, Kouji Nakamura,
Masahiro Nakamura, Hiroyuki Nakano, Kenichi
Nakao, Shinichi Nakasuka, Yoshinori Nakayama,Kazuhiro Nakazawa, Erina Nishida, Kazutaka
Nishiyama, Atsushi Nishizawa, Yoshito Niwa, Taiga
Noumi, Yoshiyuki Obuchi, Masatake Ohashi, Naoko
Ohishi, Masashi Ohkawa, Kenshi Okada, Norio
Okada, Kenichi Oohara, Norichika Sago, Motoyuki
Saijo, Ryo Saito, Masaaki Sakagami, Shin-ichiro
Sakai, Shihori Sakata, Misao Sasaki, Takashi Sato,
Masaru Shibata, Hisaaki Shinkai, Kentaro Somiya,Hajime Sotani, Naoshi Sugiyama, Yudai Suwa, Rieko
Suzuki, Hideyuki Tagoshi, Fuminobu Takahashi,
Kakeru Takahashi, Keitaro Takahashi, Ryutaro
Takahashi, Ryuichi Takahashi, Tadayuki Takahashi,
Hirotaka Takahashi, Takamori Akiteru, Tadashi
Takano, Keisuke Taniguchi, Atsushi Taruya, Hiroyuki
Tashiro, Yasuo Torii, Morio Toyoshima, Shinji
Tsujikawa, Yoshiki Tsunesada, Akitoshi Ueda, Kenichi Ueda, Masayoshi Utashima, Yaka Wakabayashi,
Kent Yagi, Hiroshi Yamakawa, Kazuhiro Yamamoto,Toshitaka Yamazaki, Jun’ichi Yokoyama, Chul-Moon
Yoo, Shijun Yoshida, Taizoh Yoshino, Ken-Xun Sun,Classical And Quantum Gravity, 27, (8), 084010,
2010, APR 21 2010.

12. PHOTOMETRIC RESPONSE FUNCTIONS OF
THE SLOAN DIGITAL SKY SURVEY IMAGER,
Mamoru Doi, Masayuki Tanaka, Masataka Fukugita,
James E. Gunn, Naoki Yasuda, Zeljko Ivezic, Jon
Brinkmann, Ernst de Haars, S. J. Kleinman, Jurek
Krzesinski, R. French Leger,
Astronomical Journal, 139, (4), pp. 1628-1648, 2010,
APR 2010.

10. Unitarity boomerang,
Paul H. Frampton, Xiao-Gang He,
Physics Letters B, 688, (1), pp. 67-70, 2010, APR 26
2010.

19. Atmospheric neutrino oscillation analysis with
subleading effects in Super-Kamiokande I, II, andIII,
R. Wendell, C. Ishihara, K. Abe, Y. Hayato, T. Iida, M.
Ikeda, K. Iyogi, J. Kameda, K. Kobayashi, Y. Koshio,
Y. Kozuma, M. Miura, S. Moriyama, M. Nakahata,
S. Nakayama, Y. Obayashi, H. Ogawa, H. Sekiya,
M. Shiozawa, Y. Suzuki, A. Takeda, Y. Takenaga,
Y. Takeuchi, K. Ueno, K. Ueshima, H. Watanabe,
S. Yamada, T. Yokozawa, S. Hazama, H. Kaji, T.
Kajita, K. Kaneyuki, T. McLachlan, K. Okumura,Y. Shimizu, N. Tanimoto, M. R. Vagins, F. Dufour,
E. Kearns, M. Litos, J. L. Raaf, J. L. Stone, L. R.
Sulak, W. Wang, M. Goldhaber, K. Bays, D. Casper,
J. P. Cravens, W. R. Kropp, S. Mine, C. Regis, M.
B. Smy, H. W. Sobel, K. S. Ganezer, J. Hill, W. E.
Keig, J. S. Jang, J. Y. Kim, I. T. Lim, J. Albert, M.
Fechner, K. Scholberg, C. W. Walter, S. Tasaka, J.
G. Learned, S. Matsuno, Y.Watanabe, T. Hasegawa,T. Ishida, T. Ishii, T. Kobayashi, T. Nakadaira, K.
Nakamura, K. Nishikawa, H. Nishino, Y. Oyama,
K. Sakashita, T. Sekiguchi, T. Tsukamoto, A. T.

11. IDENTIFICATIONS AND PHOTOMETRIC
REDSHIFTS OF THE 2 Ms CHANDRA DEEPFIELD-SOUTH SOURCES,
B. Luo, W. N. Brandt, Y. Q. Xue, M. Brusa, D. M.
Alexander, F. E. Bauer, A. Comastri, A. Koekemoer,
B. D. Lehmer, V. Mainieri, D. A. Rafferty, D. P.
Schneider, J. D. Silverman, C. Vignali,
Astrophysical Journal Supplement Series, 187, (2), pp.
560-580, 2010, APR 2010.

13. EIGHT NEW QUASAR LENSES FROM THE
SLOAN DIGITAL SKY SURVEY QUASARLENS SEARCH,
Issha Kayo, Naohisa Inada, Masamune Oguri,
Tomoki Morokuma, Patrick B. Hall, Christopher S.
Kochanek, Donald P. Schneider,
Astronomical Journal, 139, (4), pp. 1614-1621, 2010,
APR 2010.
14. Primordial black holes as all dark matter,
Paul H. Frampton, Masahiro Kawasaki, Fuminobu
Takahashi, Tsutomu T. Yanagida,
Journal Of Cosmology And Astroparticle Physics, (4),023, 2010, APR 2010.
15. Low-scale gauge mediation and composite
messenger dark matter,
Koichi Hamaguchi, Eita Nakamura, Satoshi Shirai,
Tsutomu T. Yanagida,
Journal Of High Energy Physics, (4), 119, 2010, APR
2010.
16. Collider phenomenology with Split-UED,
Kyoungchul Kong, Seong Chan Park, Thomas G.
Rizzo,
Journal Of High Energy Physics, (4), 081, 2010, APR
2010.
17. Atmospheric neutrinos and discovery of neutrino
oscillations,Takaaki Kajita,
Proceedings Of The Japan Academy Series B
Physical And Biological Sciences, 86, (4), pp. 303321, 2010, APR 2010.
18. DARK MATTER SEARCH USING CHANDRAOBSERVATIONS OF WILLMAN 1 AND
A SPECTRAL FEATURE CONSISTENT
WITH A DECAY LINE OF A 5 keV STERILENEUTRINO,
Michael Loewenstein, Alexander Kusenko,
Astrophysical Journal, 714, (1), pp. 652-662, 2010,
MAY 1 2010.

IPMU Annual Report 2010

Publications

191. Neutrino mass from a hidden world and its
phenomenological implications,Seong Chan Park, Kai Wang, Tsutomu T. Yanagida,
Physics Letters B, 685, (4-5), pp. 309-312, 2010,
MAR 8 2010.

95

20. Environmentally selected WIMP dark matter withhigh-scale supersymmetry breaking,
Gilly Elor, Hock-Seng Goh, Lawrence J. Hall, Piyush
Kumar, Yasunori Nomura,Physical Review D, 81, (9), 095003, 2010, MAY 1
2010.
21. Further study of neutrino oscillation with two
detectors in Kamioka and Korea,
F. Dufour, T. Kajita, E. Kearns, K. Okumura,Physical Review D, 81, (9), 093001, 2010, MAY 1
2010.
22. SPECTROPOLARIMETRY OF EXTREMELY
LUMINOUS TYPE Ia SUPERNOVA 2009dc:
NEARLY SPHERICAL EXPLOSION OF
SUPER-CHANDRASEKHAR MASS WHITEDWARF,
Masaomi Tanaka, Koji S. Kawabata, Masayuki
Yamanaka, Keiichi Maeda, Takashi Hattori, Kentaro
Aoki, Ken’ichi Nomoto, Masanori Iye, Toshiyuki
Sasaki, Paolo A. Mazzali, Elena Pian,
Astrophysical Journal, 714, (2), pp. 1209-1216, 2010,
MAY 10 2010.
23. New cosmological constraints on primordial black
holes,
B. J. Carr, Kazunori Kohri, Yuuiti Sendouda, Junichi
Yokoyama,
Physical Review D, 81, (10), 104019, 2010, MAY 15
2010.
24. Outflows from accreting super-spinars,
Cosimo Bambi, Tomohiro Harada, Rohta Takahashi,
Naoki Yoshida,
Physical Review D, 81, (10), 104004, 2010, MAY 15
2010.
25. Cosmological test of gravity with polarizations of
stochastic gravitational waves around 0.1-1 Hz,
Atsushi Nishizawa, Atsushi Taruya, Seiji Kawamura,Physical Review D, 81, (10), 104043, 2010, MAY 15
2010.
26. Emergent gravity at a Lifshitz point from a Bose
liquid on the lattice,
Cenke Xu, Petr Horava,
Physical Review D, 81, (10), 104033, 2010, MAY 15
2010.
27. Gravitational waves from kinks on infinite cosmic
strings,
Masahiro Kawasaki, Koichi Miyamoto, Kazunori
Nakayama,
Physical Review D, 81, (10), 103523, 2010, MAY 15
2010.
28. Effects of light fields during inflation,
Takeshi Kobayashi, Shinji Mukohyama,
Physical Review D, 81, (10), 103504, 2010, MAY 15
2010.

96

IPMU Annual Report 2010

29. A massive star origin for an unusual helium-richsupernova in an elliptical galaxy,
K. S. Kawabata, K. Maeda, K. Nomoto, S.
Taubenberger, M. Tanaka, J. Deng, E. Pian, T.
Hattori, K. Itagaki,
Nature, 465, (7296), pp. 326-328, 2010, MAY 20
2010.
30. Effects of grain shattering by turbulence on
extinction curves in starburst galaxies,
Hiroyuki Hirashita, Takaya Nozawa, Huirong Yan,
Takashi Kozasa,
Monthly Notices Of The Royal Astronomical Society,404, (3), pp. 1437-1448, 2010, MAY 21 2010.
31. Particle energy cascade in the intergalactic
medium,M. Valdes, C. Evoli, A. Ferrara, Monthly Notices Of
The Royal Astronomical Society,404, (3), pp. 1569-1582, 2010, MAY 21 2010.
32. Right-handed sneutrino dark matter and bigbang
nucleosynthesis,
Koji Ishiwata, Masahiro Kawasaki, Kazunori Kohri,
Takeo Moroi,
Physics Letters B, 689, (4-5), pp. 163-168, 2010, MAY
31 2010.
33. Gravitational-Wave Constraints on the Abundanceof Primordial Black Holes,
Ryo Saito, Jun’ichi Yokoyama,
Progress Of Theoretical Physics, 123, (5), pp. 867886, 2010, MAY 2010.
34. Gravitational waves from collapsing domain walls,
Takashi Hiramatsu, Masahiro Kawasaki, Ken’ichi
Saikawa,
Journal Of Cosmology And Astroparticle Physics, (5),032, 2010, MAY 2010.
35. Inductive Game Theory and the Dynamics ofAnimal Conflict,
Simon DeDeo, David C. Krakauer, Jessica C. Flack,
Plos Computational Biology, 6, (5), e1000782, 2010,
MAY 2010.
36. Ghost dark matter,
Tomonori Furukawa, Shuichiro Yokoyama, Kiyotomo
Ichiki, Naoshi Sugiyama, Shinji Mukohyama,
Journal Of Cosmology And Astroparticle Physics, (5),007, 2010, MAY 2010.
37. Phantom Boundary Crossing and Anomalous
Growth Index of Fluctuations in Viable f(R)Models of Cosmic Acceleration,
Hayato Mutohashi, Alexei A. Starobinsky, Jun’ichi
Yokoyama,
Progress Of Theoretical Physics, 123, (5), pp. 887902, 2010, MAY 2010.
38. COLORS OF A SECOND EARTH:
ESTIMATING THE FRACTIONAL AREAS
OF OCEAN, LAND, AND VEGETATION OF
EARTH-LIKE EXOPLANETS,
Yuka Fujii, Hajime Kawahara, Yasushi Suto, Atsushi
Taruya, Satoru Fukuda, Teruyuki Nakajima, Edwin L.
Turner,Astrophysical Journal, 715, (2), pp. 866-880, 2010,
JUN 1 2010.

39. A NEW TEST OF THE STATISTICAL NATURE
OF THE BRIGHTEST CLUSTER GALAXIES,Yen-Ting Lin, Jeremiah P. Ostriker, Christopher J.
Miller,Astrophysical Journal, 715, (2), pp. 1486-1496, 2010,
JUN 1 2010.
40. THE XMM-NEWTON WIDE-FIELD SURVEY
IN THE COSMOS FIELD (XMMCOSMOS):DEMOGRAPHY AND MULTIWAVELENGTH
PROPERTIES OF OBSCURED AND
UNOBSCURED LUMINOUS ACTIVEGALACTIC NUCLEI,
M. Brusa, F. Civano, A. Comastri, T. Miyaji, M.
Salvato, G. Zamorani, N. Cappelluti, F. Fiore, G.
Hasinger, V. Mainieri, A. Merloni, A. Bongiorno,
P. Capak, M. Elvis, R. Gilli, H. Hao, K. Jahnke, A.
M. Koekemoer, O. Ilbert, E. Le Floc’h, E. Lusso, M.
Mignoli, E. Schinnerer, J. D. Silverman, E. Treister,J. D. Trump, C. Vignali, M. Zamojski, T. Aldcroft,
H. Aussel, S. Bardelli, M. Bolzonella, A. Cappi, K.
Caputi, T. Contini, A. Finoguenov, A. Fruscione,
B. Garilli, C. D. Impey, A. Iovino, K. Iwasawa, P.
Kampczyk, J. Kartaltepe, J. P. Kneib, C. Knobel, K.
Kovac, F. Lamareille, J. -F. Leborgne, V. Le Brun, O.
Le Fevre, S. J. Lilly, C. Maier, H. J. McCracken, R.
Pello, Y. -J. Peng, E. Perez-Montero, L. de Ravel, D.
Sanders, M. Scodeggio, N. Z. Scoville, M. Tanaka,
Y. Taniguchi, L. Tasca, S. de la Torre, L. Tresse, D.
Vergani, E. Zucca,
Astrophysical Journal, 716, (1), pp. 348-369, 2010,
JUN 10 2010.
41. THE MILKY WAY TOMOGRAPHY WITH
SDSS. III. STELLAR KINEMATICS,
Nicholas A. Bond, Zeljko Ivezic, Branimir Sesar,
Mario Juric, Jeffrey A. Munn, Adam Kowalski,
Sarah Loebman, Rok Roskar, Timothy C. Beers,
Julianne Dalcanton, Constance M. Rockosi, Brian
Yanny, Heidi J. Newberg, Carlos Allende Prieto,
Ron Wilhelm, Young Sun Lee, Thirupathi Sivarani,
Steven R. Majewski, John E. Norris, Coryn A. L.
Bailer-Jones, Paola Re Fiorentin, David Schlegel,
Alan Uomoto, Robert H. Lupton, Gillian R. Knapp,
James E. Gunn, Kevin R. Covey, J. Allyn Smith,GajusMiknaitis, Mamoru Doi, Masayuki Tanaka,
Masataka Fukugita, Steve Kent, Douglas Finkbeiner,
Tom R. Quinn, Suzanne Hawley, Scott Anderson,
Furea Kiuchi, Alex Chen, James Bushong, Harkirat
Sohi, Daryl Haggard, Amy Kimball, Rosalie
McGurk, John Barentine, Howard Brewington, Mike
Harvanek, Scott Kleinman, Jurek Krzesinski, Dan
Long, Atsuko Nitta, Stephanie Snedden, Brian Lee,
Jeffrey R. Pier, Hugh Harris, Jonathan Brinkmann,
Donald P. Schneider,
Astrophysical Journal, 716, (1), pp. 1-29, 2010, JUN
10 2010.
42. Neutrino constraints on inelastic dark matter after
CDMS II results,
Jing Shu, Peng-fei Yin, Shou-hua Zhu,
Physical Review D, 81, (12), 123519, 2010, JUN 16
2010.
43. Interactions of keV sterile neutrinos with matter,
Shin’ichiro Ando, Alexander Kusenko,
Physical Review D, 81, (11), 113006, 2010, JUN 18
2010.

44. A SPECTROSCOPICALLY CONFIRMEDXRAY CLUSTER AT z=1.62 WITH A POSSIBLE
COMPANION IN THE SUBARU/XMMNEWTON DEEP FIELD,
Masayuki Tanaka, Alexis Finoguenov, Yoshihiro
Ueda,
Astrophysical Journal Letters, 716, (2), pp.
L152-L156, 2010, JUN 20 2010.
45. Measuring the galaxy-mass and galaxy-dust
correlations through magnification and reddening,
Brice Menard, Ryan Scranton, Masataka Fukugita,
Gordon Richards,
Monthly Notices Of The Royal Astronomical Society,405, (2), pp. 1025-1039, 2010, JUN 21 2010.
46. A complete calculation for direct detection of
Wino dark matter,
Junji Hisano, Koji Ishiwata, Natsumi Nagata,
Physics Letters B, 690, (3), pp. 311-315, 2010, JUN 21
2010.
47. Semidirect gauge mediation in conformal windowsof vectorlike gauge theories,
T. T. Yanagida, Kazuya Yonekura,Physical Review D, 81, (12), 125017, 2010, JUN 24
2010.
48. Nearly degenerate gauginos and dark matter at
the LHC,
Gian F. Giudice, Tao Han, Kai Wang, Lian-Tao Wang,
Physical Review D, 81, (11), 115011, 2010, JUN 24
2010.
49. Trispectrum from ghost inflation,
Keisuke Izumi, Shinji Mukohyama,
Journal Of Cosmology And Astroparticle Physics, (6),016, 2010, JUN 2010.
50. Aspects of non-minimal gauge mediation,
Satoshi Shirai, Masahito Yamazaki, Kazuya
Yonekura,
Journal Of High Energy Physics, (6), 056, 2010, JUN
2010.
51. General gauge mediation with gauge messengers,
Kenneth Intriligator, Matthew Sudano,
Journal Of High Energy Physics, (6), 047, 2010, JUN2010.
52. Warped anti-de Sitter spaces from braneintersections in type II string theory,
Domenico Orlando, Linda I. Uruchurtu,
Journal Of High Energy Physics, (6), 049, 2010, JUN
2010.
53. Non-Gaussianity of superhorizon curvature
perturbations beyond delta N formalism,
Yu-ichi Takamizu, Shinji Mukohyama, Misao Sasaki,
Yoshiharu Tanaka,
Journal Of Cosmology And Astroparticle Physics, (6),019, 2010, JUN 2010.

Publications

Suzuki, A. Minamino, T. Nakaya, Y. Fukuda, Y.
Itow, G. Mitsuka, T. Tanaka, C. K. Jung, G. Lopez,
C. McGrew, C. Yanagisawa, N. Tamura, H. Ishino,
A. Kibayashi, S. Mino, T. Mori, M. Sakuda, H.
Toyota, Y. Kuno, M. Yoshida, S. B. Kim, B. S. Yang,
T. Ishizuka, H. Okazawa, Y. Choi, K. Nishijima, Y.
Yokosawa, M. Koshiba, M. Yokoyama, Y. Totsuka, S.
Chen, Y. Heng, Z. Yang, H. Zhang, D. Kielczewska, P.
Mijakowski, K. Connolly, M. Dziomba, E. Thrane, R.
J. Wilkes,
Physical Review D, 81, (9), 092004, 2010, MAY 1
2010.

54. Sublattice counting and orbifolds,
Amihay Hanany, Domenico Orlando, SusanneReffert,Journal Of High Energy Physics, (6), 051, 2010, JUN
2010.
55. Reconstructing particle masses from pairs of
decay chains,
Mihoko M. Nojiri, Kazuki Sakurai, Bryan R. Webber,
Journal Of High Energy Physics, (6), 069, 2010, JUN
2010.

IPMU Annual Report 20109757. SEARCH FOR THE SUNYAEV-ZEL’DOVICHEFFECT IN A GIANT RADIO GALAXY
B1358+305,
Masako Yamada, Yutaka Fujita, Hiroshi Matsuo,
Naoshi Sugiyama,
Astronomical Journal, 139, (6), pp. 2494-2503, 2010,
JUN 2010.
58. Probing variant axion models at LHC,
Chuan-Ren Chen, Paul H. Frampton, Fuminobu
Takahashi, Tsutomu T. Yanagida,
Journal Of High Energy Physics, (6), 059, 2010, JUN2010.
59. An asymmetric explosion as the origin of spectral
evolution diversity in type Ia supernovae,
K. Maeda, S. Benetti, M. Stritzinger, F. K. Roepke, G.
Folatelli, J. Sollerman, S. Taubenberger, K. Nomoto,G. Leloudas, M. Hamuy, M. Tanaka, P. A. Mazzali, N.
Elias-Rosa,
Nature, 466, (7302), pp. 82-85, 2010, JUL 1 2010.
60. CORE-COLLAPSE SUPERNOVA MODEL
FOR THE EXTREMELY LUMINOUS TYPE
Ic SUPERNOVA 2007bi: AN ALTERNATIVE
TO THE PAIR-INSTABILITY SUPERNOVAMODEL,
Takashi Moriya, Nozomu Tominaga, Masaomi
Tanaka, Keiichi Maeda, Ken’ichi Nomoto,
Astrophysical Journal Letters, 717, (2), pp. L83-L86,
2010, JUL 10 2010.
61. Direct measurement of dark matter halo ellipticity
from two-dimensional lensing shear maps of 25
massive clusters,
Masamune Oguri, Masahiro Takada, Nobuhiro
Okabe, Graham P. Smith,Monthly Notices Of The Royal Astronomical Society,405, (4), pp. 2215-2230, 2010, JUL 11 2010.
62. Power spectrum extraction for redshifted 21-cm
Epoch of Reionization experiments: the LOFAR
case,
Geraint Harker, Saleem Zaroubi, Gianni Bernardi,
Michiel A. Brentjens, A. G. de Bruyn, Benedetta
Ciardi, Vibor Jelic, Leon V. E. Koopmans, Panagiotis
Labropoulos, Garrelt Mellema, Andre Offringa, V.
N. Pandey, Andreas H. Pawlik, Joop Schaye, Rajat M.
Thomas, Sarod Yatawatta,
Monthly Notices Of The Royal Astronomical Society,405, (4), pp. 2492-2504, 2010, JUL 11 2010.
63. The real topological vertex at work,
Daniel Krefl, Sara Pasquetti, JohannesWalcher,
Nuclear Physics B, 833, (3), pp. 153-198, 2010, JUL
11 2010.
64. WIMP dark matter in gauge-mediated SUSY
breaking models and its phenomenology,
Junji Hisano, Kazunori Nakayama, Shohei Sugiyama,
Tomohiro Takesako, Masato Yamanaka,
Physics Letters B, 691, (1), pp. 46-55, 2010, JUL 12
2010.
65. Leptonic unitary triangles and boomerangs,
Alexander Dueck, Serguey T. Petcov, Werner
Rodejohann,Physical Review D, 82, (1), 013005, 2010, JUL 16
2010.

98

IPMU Annual Report 2010

66. Geometrically consistent approach to stochastic
DBI inflation,
Larissa Lorenz, Jerome Martin, Jun’ichi Yokoyama,
Physical Review D, 82, (2), 023515, 2010, JUL 19
2010.
67. Open BPS wall crossing and M-theory,
Mina Aganagic, Masahito Yamazaki,
Nuclear Physics B, 834, (1-2), pp. 258-272, 2010, JUL
21 2010.
68. Hunting for new physics with unitarity
boomerangs,
Paul H. Frampton, Xiao-Gang He,
Physical Review D, 82, (1), 017301, 2010, JUL 23
2010.
69. Density perturbations in general modified
gravitational theories,
Antonio De Felice, Shinji Mukohyama, Shinji
Tsujikawa,Physical Review D, 82, (2), 023524, 2010, JUL 26
2010.
70. LoCuSS: Probing galaxy transformation physics
with Herschel,
G. P. Smith, C. P. Haines, M. J. Pereira, E. Egami, S.
M. Moran, E. Hardegree-Ullman, A. Babul, M. Rex,
T. D. Rawle, Y. -Y. Zhang, A. Finoguenov, N. Okabe,
A. J. R. Sanderson, A. C. Edge, M. Takada,
Astronomy & Astrophysics, 518, L18, 2010, JULAUG 2010.
71. A definitive signal of multiple supersymmetry
breaking,
Clifford Cheung, Jeremy Mardon, Yasunori Nomura,
Jesse Thaler,
Journal Of High Energy Physics, (7), 035, 2010, JUL
2010.
72. Probe branes, time-dependent couplings andthermalization in AdS/CFT,
Sumit R. Das, Tatsuma Nishioka, Tadashi
Takayanagi,
Journal Of High Energy Physics, (7), 071, 2010, JUL
2010.
73. A vector-like fourth generation with a discrete
symmetry from Split-UED,
Kyoungchul Kong, Seong Chan Park, Thomas G.
Rizzo,
Journal Of High Energy Physics, (7), 059, 2010, JUL
2010.
74. Discrete R symmetries and domain walls,
Michael Dine, Fuminobu Takahashi, Tsutomu T.
Yanagida,
Journal Of High Energy Physics, (7), 003, 2010, JUL
2010.
75. Scale dependence of halo bispectrum from nonGaussian initial conditions in cosmological Nbody
simulations,Takahiro Nishimichi, Atsushi Taruya, Kazuya
Koyama, Cristiano Sabiu,
Journal Of Cosmology And Astroparticle Physics, (7),002, 2010, JUL 2010.
76. The environmental dependence of galaxy
properties at z=2,
M. Tanaka, C. De Breuck, B. Venemans, J. Kurk,
Astronomy & Astrophysics, 518, A18, 2010, JULAUG 2010.

77. EKEDAHL-OORT STRATA CONTAINEDIN THE SUPERSINGULAR LOCUS AND
DELIGNE-LUSZTIG VARIETIES,Shushi Harashita,
Journal Of Algebraic Geometry, 19, (3), pp. 419-438,
2010, JUL 2010.
78. IMAGING OF A TRANSITIONAL DISK GAP
IN REFLECTED LIGHT: INDICATIONS OF
PLANET FORMATION AROUND THE YOUNGSOLAR ANALOG LkCa 15,
C. Thalmann, C. A. Grady, M. Goto, J. P. Wisniewski,
M. Janson, T. Henning, M. Fukagawa, M. Honda,
G. D. Mulders, M. Min, A. Moro-Martin, M. W.
McElwain, K. W. Hodapp, J. Carson, L. Abe, W.
Brandner, S. Egner, M. Feldt, T. Fukue, T. Golota,
O. Guyon, J. Hashimoto, Y. Hayano, M. Hayashi, S.
Hayashi, M. Ishii, R. Kandori, G. R. Knapp, T. Kudo,
N. Kusakabe, M. Kuzuhara, T. Matsuo, S. Miyama,
J. -I.Morino, T. Nishimura, T. -S. Pyo, E. Serabyn, H.
Shibai, H. Suto, R. Suzuki, M. Takami, N. Takato, H.
Terada, D. Tomono, E. L. Turner, M. Watanabe, T.
Yamada, H. Takami, T. Usuda, M. Tamura,
Astrophysical Journal Letters, 718, (2), pp. L87-L91,
2010, AUG 1 2010.
79. Two types of Lyman alpha emitters envisaged
from hierarchical galaxy formation,
Ikkoh Shimizu, Masayuki Umemura,Monthly Notices Of The Royal Astronomical Society,406, (2), pp. 913-921, 2010, AUG 1 2010.
80. A CLIPPING METHOD TO MITIGATE THE
IMPACT OF CATASTROPHIC PHOTOMETRIC
REDSHIFT ERRORS ON WEAK LENSINGTOMOGRAPHY,
Atsushi J. Nishizawa, Masahiro Takada, Takashi
Hamana, Hisanori Furusawa,
Astrophysical Journal, 718, (2), pp. 1252-1265, 2010,
AUG 1 2010.
81. OBSERVATIONS OF THE OPTICAL
TRANSIENT IN NGC 300 WITH AKARI/IRC:
POSSIBILITIES OF ASYMMETRIC DUSTFORMATION,
R. Ohsawa, I. Sakon, T. Onaka, M. Tanaka, T.
Moriya, T. Nozawa, K. Maeda, K. Nomoto, N.
Tominaga, F. Usui, H. Matsuhara, T. Nakagawa, H.
Murakami,
Astrophysical Journal, 718, (2), pp. 1456-1459, 2010,
AUG 1 2010.
82. DARK GRB 080325 IN A DUSTY MASSIVEGALAXY AT z similar to 2,
T. Hashimoto, K. Ohta, K. Aoki, I. Tanaka, K. Yabe,
N. Kawai, W. Aoki, H. Furusawa, T. Hattori, M.
Iye, K. S. Kawabata, N. Kobayashi, Y. Komiyama,
G. Kosugi, Y. Minowa, Y. Mizumoto, Y. Niino, K.
Nomoto, J. Noumaru, R. Ogasawara, T. -S. Pyo, T.
Sakamoto, K. Sekiguchi, Y. Shirasaki, M. Suzuki, A.
Tajitsu, T. Takata, T. Tamagawa, H. Terada, T. Totani,
J. Watanabe, T. Yamada, A. Yoshida,
Astrophysical Journal, 719, (1), pp. 378-384, 2010,
AUG 10 2010.
83. FALLBACK SUPERNOVAE: A POSSIBLE
ORIGIN OF PECULIAR SUPERNOVAE WITH
EXTREMELY LOW EXPLOSION ENERGIES,
Takashi Moriya, Nozomu Tominaga, Masaomi
Tanaka, Ken’ichi Nomoto, Daniel N. Sauer, Paolo A.
Mazzali, Keiichi Maeda, Tomoharu Suzuki,
Astrophysical Journal, 719, (2), pp. 1445-1453, 2010,
AUG 20 2010.

84. LHC reach of low scale gauge mediation with
perturbatively stable vacuum,
Ryosuke Sato, Satoshi Shirai,
Physics Letters B, 692, (2), pp. 126-129, 2010, AUG
23 2010.
85. Role of Galactic Sources and Magnetic Fields
in Forming the Observed Energy-Dependent
Composition of Ultrahigh-Energy Cosmic Rays,
Antoine Calvez, Alexander Kusenko, Shigehiro
Nagataki,Physical Review Letters, 105, (9), 091101, 2010, AUG
24 2010.
86. Dipole anisotropy of galaxy distribution: Does the
CMB rest frame exist in the local universe?,
Yousuke Itoh, Kazuhiro Yahata, Masahiro Takada,Physical Review D, 82, (4), 043530, 2010, AUG 27
2010.
87. Flavor structure in F-theory compactifications,
Hirotaka Hayashi, Teruhiko Kawano, Yoichi
Tsuchiya, Taizan Watari,
Journal Of High Energy Physics, (8), 036, 2010, AUG
2010.
88. THE MULTIWAVELENGTH SURVEY BY
YALE-CHILE (MUSYC): DEEP MEDIUMBAND
OPTICAL IMAGING AND HIGHQUALITY 32BAND PHOTOMETRIC REDSHIFTS IN THE
ECDF-S,
Carolin N. Cardamone, Pieter G. van Dokkum, C.
Megan Urry, Yoshi Taniguchi, Eric Gawiser, Gabriel
Brammer, Edward Taylor, Maaike Damen, Ezequiel
Treister, Bethany E. Cobb, Nicholas Bond, Kevin
Schawinski, Paulina Lira, Takashi Murayama,
Tomoki Saito, Kentaro Sumikawa,
Astrophysical Journal Supplement Series, 189, (2),pp. 270-285, 2010, AUG 2010.
89. Compact hyperbolic extra dimension: a Mtheory
solution and its implications for the LHC,
Domenico Orlando, Seong Chan Park,
Journal Of High Energy Physics, (8), 006, 2010, AUG
2010.
90. THE SLOAN DIGITAL SKY SURVEY QUASARLENS SEARCH. IV. STATISTICAL LENSSAMPLE FROM THE FIFTH DATA RELEASE,
Naohisa Inada, Masamune Oguri, Min-Su Shin,
Issha Kayo, Michael A. Strauss, Joseph F. Hennawi,
Tomoki Morokuma, Robert H. Becker, Richard
L. White, Christopher S. Kochanek, Michael D.
Gregg, Kuenley Chiu, David E. Johnston, Alejandro
Clocchiatti, Gordon T. Richards, Donald P. Schneider,
Joshua A. Frieman, Masataka Fukugita, III J. Richard
Gott, Patrick B. Hall, Donald G. York, Francisco J.
Castander, Neta A. Bahcall,
Astronomical Journal, 140, (2), pp. 403-415, 2010,
AUG 2010.

Publications

56. Numerical study of Q-ball formation in gravity
mediation,
Takashi Hiramatsu, Masahiro Kawasaki, Fuminobu
Takahashi,
Journal Of Cosmology And Astroparticle Physics, (6),008, 2010, JUN 2010.

91. Pulse shape simulation for segmented truecoaxial
HPGe detectors,
I. Abt, A. Caldwell, D. Lenz, J. Liu, X. Liu, B.
Majorovits,
European Physical Journal C, 68, (3-4), pp. 609-618,
2010, AUG 2010.
92. Combinatorial cell complexes and Poincar, duality,
Tathagata Basak,
Geometriae Dedicata, 147, (1), pp. 357-387, 2010,
AUG 2010.

IPMU Annual Report 201099

104. Topological insulators and superconductors fromD-brane,Shinsei Ryu, Tadashi Takayanagi,
Physics Letters B, 693, (2), pp. 175-179, 2010, SEP 27
2010.

94. COLOR-MAGNITUDE RELATIONS OF
ACTIVE AND NON-ACTIVE GALAXIESIN THE CHANDRA DEEP FIELDS:HIGHREDSHIFT CONSTRAINTS AND
STELLARMASS SELECTION EFFECTS,
Y. Q. Xue, W. N. Brandt, B. Luo, D. A. Rafferty,
D. M. Alexander, F. E. Bauer, B. D. Lehmer, D. P.
Schneider, J. D. Silverman,
Astrophysical Journal, 720, (1), pp. 368-391, 2010,
SEP 1 2010.

105. Top quarks as a window to string resonances,Zhe Dong, Tao Han, Min-xin Huang, Gary Shiu,
Journal Of High Energy Physics, (9), 048, 2010, SEP
2010.
106. Black holes in an asymptotically safe gravity
theory with higher derivatives,
Yi-Fu Cai, Damien A. Easson,
Journal Of Cosmology And Astroparticle Physics, (9),002, 2010, SEP 2010.

95. Three-dimensional simulations of the accretion
process in Kerr space-time with arbitrary value ofthe spin parameter,
Cosimo Bambi, Naoki Yoshida,
Physical Review D, 82, (6), 064002, 2010, SEP 2
2010.

107. Collider signatures of sterile neutrinos in models
with a gauge-singlet Higgs,
Ian M. Shoemakera, Kalliopi Petraki, Alexander
Kusenko,
Journal Of High Energy Physics, (9), 060, 2010, SEP
2010.

96. Decomposition of spectra from redshift distortionmaps,
Yong-Seon Song, Issha Kayo,Monthly Notices Of The Royal Astronomical Society,407, (2), pp. 1123-1127, 2010, SEP 11 2010.

108. Kinematics and line strength indices in the halosof the Coma brightest cluster galaxies NGC 4874
and NGC 4889,
L. Coccato, M. Arnaboldi, O. Gerhard, K. C.
Freeman, G. Ventimiglia, N. Yasuda,
Astronomy & Astrophysics, 519, A95, 2010, SEP
2010.

97. Baryon acoustic oscillations in 2D: Modelingredshift-space power spectrum from perturbation
theory,Atsushi Taruya, Takahiro Nishimichi, Shun Saito,
Physical Review D, 82, (6), 063522, 2010, SEP 16
2010.
98. Can past gamma-ray bursts explain both
INTEGRAL and ATIC/PAMELA/Fermi
anomalies simultaneously?,
Antoine Calvez, Alexander Kusenko,
Physical Review D, 82, (6), 063005, 2010, SEP 17
2010.
99. LoCuSS: CALIBRATINGMASS-OBSERVABLESCALING RELATIONS FOR CLUSTERCOSMOLOGY WITH SUBARU WEAKLENSING OBSERVATIONS,
N. Okabe, Y. -Y. Zhang, A. Finoguenov, M. Takada, G.
P. Smith, K. Umetsu, T. Futamase,Astrophysical Journal, 721, (1), pp. 875-885, 2010,
SEP 20 2010.
100. NEUTRINO MIXING, LEPTONIC CPVIOLATION,
THE SEESAW MECHANISM AND BEYOND,
S. T. Petcov,
International Journal Of Modern Physics A, 25, (23),pp. 4325-4337, 2010, SEP 20 2010.
101. General covariance in quantum gravity at a
Lifshitz point,
Petr Horava, Charles M. Melby-Thompson,
Physical Review D, 82, (6), 064027, 2010, SEP 212010.
102. Linear inflation from running kinetic term insupergravity,
Fuminobu Takahashi,
Physics Letters B, 693, (2), pp. 140-143, 2010, SEP 27
2010.
103. Dark matter from split seesaw,
Alexander Kusenko, Fuminobu Takahashi, Tsutomu
T. Yanagida,
Physics Letters B, 693, (2), pp. 144-148, 2010, SEP 27
2010.

100

IPMU Annual Report 2010109. Matter Power Spectrum in f(R) Gravity with
Massive Neutrinos,
Hayato Motohashi, Alexei A. Starobinsky, Jun’ichi
Yokoyama,
Progress Of Theoretical Physics, 124, (3), pp. 541546, 2010, SEP 2010.
110. TeV scale see-saw mechanisms of neutrino mass
generation, the Majorana nature of the heavy
singlet neutrinos and (beta beta)(0 nu)-decay,
A. Ibarra, E. Molinaro, S. T. Petcov,
Journal Of High Energy Physics, (9), 108, 2010, SEP
2010.

115. Nonlinearly realized extended supergravity,
K-I Izawa, Y. Nakai, Ryo Takahashi,
Physical Review D, 82, (7), 075008, 2010, OCT 132010.
116. Saturating the holographic entropy bound,
Raphael Bousso, Ben Freivogel, Stefan Leichenauer,
Physical Review D, 82, (8), 084024, 2010, OCT 13
2010.
117. THE ATACAMA COSMOLOGY TELESCOPE:
A MEASUREMENT OF THE 600 < l < 8000
COSMIC MICROWAVE BACKGROUND
POWER SPECTRUM AT 148 GHz,
J. W. Fowler, V. Acquaviva, P. A. R. Ade, P.
Aguirre, M. Amiri, J. W. Appel, L. F. Barrientos,
E. S. Battistelli, J. R. Bond, B. Brown, B. Burger, J.
Chervenak, S. Das, M. J. Devlin, S. R. Dicker, W.
B. Doriese, J. Dunkley, R. Duenner, T. EssingerHileman, R. P. Fisher, A. Hajian, M. Halpern, M.
Hasselfield, C. Hernandez-Monteagudo, G. C.
Hilton, M. Hilton, A. D. Hincks, R. Hlozek, K. M.
Huffenberger, D. H. Hughes, J. P. Hughes, L. Infante,
K. D. Irwin, R. Jimenez, J. B. Juin, M. Kaul, J. Klein,
A. Kosowsky, J. M. Lau, M. Limon, Y. -T. Lin, R. H.
Lupton, T. A. Marriage, D. Marsden, K. Martocci, P.
Mauskopf, F. Menanteau, K. Moodley, H. Moseley,
C. B. Netterfield, M. D. Niemack, M. R. Nolta, L. A.
Page, L. Parker, B. Partridge, H. Quintana, B. Reid,
N. Sehgal, J. Sievers, D. N. Spergel, S. T. Staggs, D. S.
Swetz, E. R. Switzer, R. Thornton, H. Trac, C. Tucker,
L. Verde, R. Warne, G. Wilson, E. Wollack, Y. Zhao,
Astrophysical Journal, 722, (2), pp. 1148-1161, 2010,
OCT 20 2010.
118. LOW-METALLICITY STAR FORMATION:
PRESTELLAR COLLAPSE AND
PROTOSTELLAR ACCRETION IN THE
SPHERICAL SYMMETRY,
Kazuyuki Omukai, Takashi Hosokawa, Naoki
Yoshida,Astrophysical Journal, 722, (2), pp. 1793-1815, 2010,
OCT 20 2010.

111. Notes on operator equations of supercurrent
multiplets and the anomaly puzzle insupersymmetric field theories,
Kazuya Yonekura,
Journal Of High Energy Physics, (9), 049, 2010, SEP
2010.

119. The R136 star cluster hosts several stars whose
individual masses greatly exceed the accepted 150
M-circle dot stellar mass limit,
Paul A. Crowther, Olivier Schnurr, Raphael Hirschi,
Norhasliza Yusof, Richard J. Parker, Simon P.
Goodwin, Hasan Abu Kassim,
Monthly Notices Of The Royal Astronomical Society,408, (2), pp. 731-751, 2010, OCT 21 2010.

112. The GSF instability and turbulence do not accountfor the relatively low rotation rate of pulsars,
R. Hirschi, A. Maeder,
Astronomy & Astrophysics, 519, A16, 2010, SEP
2010.

120. Shape and position of the shadow in the delta = 2
Tomimatsu-Sato spacetime,
Cosimo Bambi, Naoki Yoshida,
Classical And Quantum Gravity, 27, (20), 205006,
2010, OCT 21 2010.

113. A conformal gauge mediation and dark matterwith only one mass parameter,
Tsutornu T. Yanagida, Kazuya Yonekura,Physics Letters B, 693, (3), pp. 281-286, 2010, OCT 4
2010.

121. Light output response of KamLAND liquid
scintillator for protons and C-12 nuclei,
S. Yoshida, T. Ebihara, T. Yano, A. Kozlov, T.
Kishimoto, I. Ogawa, R. Hazama, S. Umehara,
K. Mukaida, K. Ichihara, Y. Hirano, I. Murata, J.
Datemichi, H. Sugimoto, Nuclear Instruments &Methods In Physics Research Section A-Accelerators
Spectrometers Detectors And Associated Equipment,
622, (3), pp. 574-582, 2010, OCT 21 2010.

114. EVIDENCE FOR GAMMA-RAY HALOSAROUND ACTIVE GALACTIC NUCLEIAND THE FIRST MEASUREMENT OF
INTERGALACTIC MAGNETIC FIELDS,
Shin’ichiro Ando, Alexander Kusenko,
Astrophysical Journal Letters, 722, (1), pp. L39-L44,
2010, OCT 10 2010.

122. Topological insulators and superconductors fromstring theory,
Shinsei Ryu, Tadashi Takayanagi,
Physical Review D, 82, (8), 086014, 2010, OCT 26
2010.

123. Color Sextet Scalars in Early LHC Experiments,
Edmond L. Berger, Qing-Hong Cao, Chuan-Ren
Chen, Gabe Shaughnessy, Hao Zhang,Physical Review Letters, 105, (18), 181802, 2010,
OCT 27 2010.
124. Non-Gaussianity from Lifshitz scalar,
Keisuke Izumi, Takeshi Kobayashi, Shinji
Mukohyama,
Journal Of Cosmology And Astroparticle Physics,(10), 031, 2010, OCT 2010.
125. Coupling Supersymmetric Nonlinear Sigma
Models to Supergravity,
Taichiro Kugo, Tsutomu T. Yanagida,
Progress Of Theoretical Physics, 124, (4), pp. 555565, 2010, OCT 2010.
126. CURVE COUNTING THEORIES VIA STABLEOBJECTS I. DT/PT CORRESPONDENCE,
Yukinobu Toda,
Journal Of The American Mathematical Society, 23,(4), pp. 1119-1157, 2010, OCT 2010.
127. Hubble Space Telescope observations of Europa inand out of eclipse,
W. B. Sparks, M. McGrath, K. Hand, H. C. Ford, P.
Geissler, J. H. Hough, E. L. Turner, C. F. Chyba, R.
Carlson, M. Turnbull,International Journal Of Astrobiology, 9, (4), pp. 265271, 2010, OCT 2010.
128. Are C-rich ultra iron-poor stars also He-rich?,
G. Meynet, R. Hirschi, S. Ekstrom, A. Maeder, C.
Georgy, P. Eggenberger, C. Chiappini,
Astronomy & Astrophysics, 521, A30, 2010, OCT
2010.
129. Relating gauge theories via Gauge/Bethe
correspondence,
Domenico Orlando, Susanne Reffert,
Journal Of High Energy Physics, (10), 071, 2010,
OCT 2010.
130. Global SO(10) F-theory GUTs,
Ching-Ming Chen, Johanna Knapp, Maximilian
Kreuzer, Christoph Mayrhofer,
Journal Of High Energy Physics, (10), 057, 2010,
OCT 2010.
131. STATISTICS OF 207 Ly alpha EMITTERS AT
A REDSHIFT NEAR 7: CONSTRAINTS ON
REIONIZATION AND GALAXY FORMATIONMODELS,
Masami Ouchi, Kazuhiro Shimasaku, Hisanori
Furusawa, Tomoki Saito, Makiko Yoshida, Masayuki
Akiyama, Yoshiaki Ono, Toru Yamada, Kazuaki
Ota, Nobunari Kashikawa, Masanori Iye, Tadayuki
Kodama, Sadanori Okamura, Chris Simpson,
Michitoshi Yoshida,
Astrophysical Journal, 723, (1), pp. 869-894, 2010,
NOV 1 2010.

Publications

93. Mesons as Open Strings in a Holographic Dual of
QCD,
Toshiya Imoto, Tadakatsu Sakai, Shigeki Sugimoto,
Progress Of Theoretical Physics, 124, (2), pp. 263284, 2010, AUG 2010.

132. Review of instrumentation for observational
particle physics,
Yoichiro Suzuki,
Nuclear Instruments & Methods In Physics Research
Section A-Accelerators Spectrometers Detectors And
Associated Equipment, 623, (1), pp. 57-62, 2010,
NOV 1 2010.

IPMU Annual Report 2010101

134. THE ATACAMA COSMOLOGY TELESCOPE:
PHYSICAL PROPERTIES AND PURITY OF AGALAXY CLUSTER SAMPLE SELECTED VIA
THE SUNYAEVZEL’DOVICH EFFECT,
Felipe Menanteau, Jorge Gonzalez, Jean-Baptiste
Juin, Tobias A. Marriage, Erik D. Reese, Viviana
Acquaviva, Paula Aguirre, John William Appel,
Andrew J. Baker, L. Felipe Barrientos, Elia S.
Battistelli, J. Richard Bond, Sudeep Das, Amruta J.
Deshpande, Mark J. Devlin, Simon Dicker, Joanna
Dunkley, Rolando Duenner, Thomas EssingerHileman, Joseph W. Fowler, Amir Hajian, MarkHalpern, Matthew Hasselfield, Carlos HernandezMonteagudo, Matt Hilton, Adam D. Hincks, Renee
Hlozek, Kevin M. Huffenberger, John P. Hughes,
Leopoldo Infante, Kent D. Irwin, Jeff Klein, Arthur
Kosowsky, Yen-Ting Lin, Danica Marsden, Kavilan
Moodley, Michael D. Niemack, Michael R. Nolta,
Lyman A. Page, Lucas Parker, Bruce Partridge,
Neelima Sehgal, Jon Sievers, David N. Spergel,
Suzanne T. Staggs, Daniel Swetz, Eric Switzer,
Robert Thornton, Hy Trac, Ryan Warne, Ed Wollack,
Astrophysical Journal, 723, (2), pp. 1523-1541, 2010,
NOV 10 2010.
135. OPTICAL REDSHIFT AND RICHNESSESTIMATES FOR GALAXY
CLUSTERS SELECTED WITH THE
SUNYAEVZEL’DOVICH EFFECT FROM 2008
SOUTH POLE TELESCOPE OBSERVATIONS,
F. W. High, B. Stalder, J. Song, P. A. R. Ade, K. A.
Aird, S. S. Allam, R. Armstrong, W. A. Barkhouse, B.
A. Benson, E. Bertin, S. Bhattacharya, L. E. Bleem,
M. Brodwin, E. J. Buckley-Geer, J. E. Carlstrom, P.
Challis, C. L. Chang, T. M. Crawford, A. T. Crites,
T. de Haan, S. Desai, M. A. Dobbs, J. P. Dudley,
R. J. Foley, E. M. George, M. Gladders, N. W.
Halverson, M. Hamuy, S. M. Hansen, G. P. Holder,
W. L. Holzapfel, J. D. Hrubes, M. Joy, R. Keisler, A.
T. Lee, E. M. Leitch, H. Lin, Y. -T. Lin, A. Loehr,
M. Lueker, D. Marrone, J. J. McMahon, J. Mehl,
S. S. Meyer, J. J. Mohr, T. E. Montroy, N. Morell,
C. -C. Ngeow, S. Padin, T. Plagge, C. Pryke, C. L.
Reichardt, A. Rest, J. Ruel, J. E. Ruhl, K. K. Schaffer,
L. Shaw, E. Shirokoff, R. C. Smith, H. G. Spieler,
Z. Staniszewski, A. A. Stark, C. W. Stubbs, D. L.
Tucker, K. Vanderlinde, J. D. Vieira, R. Williamson,
W. M. Wood-Vasey, Y. Yang, O. Zahn, A. Zenteno,
Astrophysical Journal, 723, (2), pp. 1736-1747, 2010,
NOV 10 2010.
136. ON THE POPULATIONS OF RADIOGALAXIES WITH EXTENDED
MORPHOLOGY AT z < 0.3,
Yen-Ting Lin, Yue Shen, Michael A. Strauss, Gordon
T. Richards, Ragnhild Lunnan,
Astrophysical Journal, 723, (2), pp. 1119-1138, 2010,
NOV 10 2010.
137. Dynamical matter-parity breaking and gravitino
dark matter,
Jonas Schmidt, Christoph Weniger, Tsutomu T.
Yanagida,
Physical Review D, 82, (10), 103517, 2010, NOV 12
2010.

102

IPMU Annual Report 2010

138. Halo-galaxy lensing: A full sky approach,Roland de Putter, Masahiro Takada,Physical Review D, 82, (10), 103522, 2010, NOV 17
2010.
139. Horava-Lifshitz cosmology: a review,Shinji Mukohyama,Classical And Quantum Gravity, 27, (22), 223101,
2010, NOV 21 2010.
140. More on dimension-4 proton decay problem in
F-theory. Spectral surface, discriminant locus andmonodromy,
Hirotaka Hayashi, Teruhiko Kawano, Yoichi
Tsuchiya, Taizan Watari,
Nuclear Physics B, 840, (1-2), pp. 304-348, 2010,
NOV 21 2010.
141. Search for the elusive Higgs boson using jet
structure at LHC,
Chuan-Ren Chen, Mihoko M. Nojiri, Warintorn
Sreethawong,
Journal Of High Energy Physics, (11), 012, 2010,
NOV 2010.
142. Running kinetic inflation,
Kazunori Nakayama, Fuminobu Takahashi,
Journal Of Cosmology And Astroparticle Physics,(11), 009, 2010, NOV 2010.
143. The WIRCAM Deep Infrared Cluster Survey I.
Groups and clusters at z greater than or similar to
1.1,
R. M. Bielby, A. Finoguenov, M. Tanaka, H. J.
McCracken, E. Daddi, P. Hudelot, O. Ilbert, J.
P. Kneib, O. Le Fevre, Y. Mellier, K. Nandra, P.
Petitjean, R. Srianand, C. S. Stalin, C. J. Willott,
Astronomy & Astrophysics, 523, A66, 2010, NOVDEC 2010.
144. General analysis of inflation in the Jordan frame
supergravity,
Kazunori Nakayama, Fuminobu Takahashi,
Journal Of Cosmology And Astroparticle Physics,(11), 039, 2010, NOV 2010.
145. Probing high reheating temperature scenarios at
the LHC with long-lived staus,
Motoi Endo, Koichi Hamaguchi, Kouhei Nakaji,
Journal Of High Energy Physics, (11), 004, 2010,
NOV 2010.
146. Constraints on rotational mixing from surface
evolution of light elements in massive stars,
U. Frischknecht, R. Hirschi, G. Meynet, S. Ekstroem,
C. Georgy, T. Rauscher, C. Winteler, F. -K.
Thielemann,
Astronomy & Astrophysics, 522, A39, 2010, NOV
2010.
147. Singlet portal to the hidden sector,
Clifford Cheung, Yasunori Nomura,
Journal Of High Energy Physics, (11), 103, 2010,
NOV 2010.

148. THE EXTENDED CHANDRA DEEP FIELDSOUTH SURVEY: OPTICAL SPECTROSCOPY
OF FAINT X-RAY SOURCES WITH THE VLTAND KECK,J. D. Silverman, V. Mainieri, M. Salvato, G. Hasinger,
J. Bergeron, P. Capak, G. Szokoly, A. Finoguenov, R.
Gilli, P. Rosati, P. Tozzi, C. Vignali, D. M. Alexander,
W. N. Brandt, B. D. Lehmer, B. Luo, D. Rafferty, Y. Q.
Xue, I. Balestra, F. E. Bauer, M. Brusa, A. Comastri,J. Kartaltepe, A. M. Koekemoer, T. Miyaji, D. P.
Schneider, E. Treister, L. Wisotski, M. Schramm,
Astrophysical Journal Supplement Series, 191,(1), pp.
124-142, 2010, NOV 2010.
149. Global symmetries and D-terms insupersymmetric field theories,
Thomas T. Dumitrescu, Zohar Komargodski,
Matthew Sudano,
Journal Of High Energy Physics, (11), 052, 2010,
NOV 2010.
150. Measuring black hole formations by entanglement
entropy via coarse-graining,
Tadashi Takayanagi, Tomonori Ugajin,
Journal Of High Energy Physics, (11), 054, 2010,
NOV 2010.
151. Foregrounds for observations of the cosmological
21 cm line II. Westerbork observations of the fields
around 3C 196 and the North Celestial Pole,G. Bernardi, A. G. de Bruyn, G. Harker, M. A.
Brentjens, B. Ciardi, V. Jelic, L. V. E. Koopmans, P.
Labropoulos, A. Offringa, V. N. Pandey, J. Schaye, R.
M. Thomas, S. Yatawatta, S. Zaroubi,
Astronomy & Astrophysics, 522, A67, 2010, NOV
2010.
152. ANALYTICAL GALAXY PROFILES FOR
PHOTOMETRIC AND LENSING ANALYSIS,David N. Spergel,
Astrophysical Journal Supplement Series, 191, (1), pp.
58-65, 2010, NOV 2010.
153. DOES GALACTIC MAGNETIC FIELDDISTURB THE CORRELATION OF THE
HIGHEST ENERGY COSMIC RAYS WITH
THEIR SOURCES?,
Hajime Takami, Katsuhiko Sato,
Astrophysical Journal, 724, (2), pp. 1456-1472,
2010, DEC 1 2010.
154. SUPERSOFT X-RAY PHASE OF SINGLE
DEGENERATE TYPE Ia SUPERNOVAPROGENITORS IN EARLY-TYPE GALAXIES,
Izumi Hachisu, Mariko Kato, Ken’ichi Nomoto,
Astrophysical Journal Letters, 724, (2), pp.
L212-L216, 2010, DEC 1 2010.
155. Holographic endpoint of spatially modulated
phase transition,
Hirosi Ooguri, Chang-Soon Park,
Physical Review D, 82, (12), 126001, 2010, DEC 2
2010.
156. TeV scale horizontal gauge symmetry and its
implications in B physics,
Seong Chan Park, Jing Shu, Kai Wang, Tsutomu T.
Yanagida,
Physical Review D, 82, (11), 114003, 2010, DEC 2
2010.
157. Reflection positivity of free overlap fermions,
Yoshio Kikukawa, Kouta Usui,
Physical Review D, 82, (11), 114503, 2010, DEC 2
2010.

158. Inflation Driven by the Galileon Field,
Tsutomu Kobayashi, Masahide Yamaguchi,
Jun’ichi Yokoyama,
Physical Review Letters, 105, (23), 231302, 2010,
DEC 3 2010.
159. Gluon contribution to dark matter direct
detection,
Junji Hisano, Koji Ishiwata, Natsumi Nagata,
Physical Review D, 82, (11), 115007, 2010, DEC 92010.
160. Thick disk accretion in Kerr space-time with
arbitrary spin parameters,
Cosimo Bambi, Naoki Yoshida,
Physical Review D, 82, (12), 124037, 2010, DEC 202010.
161. Entropic landscape,Raphael Bousso, Roni Harnik,
Physical Review D, 82, (12), 123523, 2010, DEC 212010.
162. Boundary definition of a multiverse measure,Raphael Bousso, Ben Freivogel, Stefan Leichenauer,
Vladimir Rosenhaus,
Physical Review D, 82, (12), 125032, 2010, DEC 222010.
163. Controlling initial state radiation in sparticle mass
reconstruction,
Mihoko M. Nojiri, Kazuki Sakurai,
Physical Review D, 82, (11), 115026, 2010, DEC 272010.
164. Inflation from a supersymmetric axion model,
Masahiro Kawasaki, Naoya Kitajima, Kazunori
Nakayama,
Physical Review D, 82, (12), 123531, 2010, DEC 292010.
165. THE ATACAMA COSMOLOGY TELESCOPE(ACT): BEAM PROFILES AND FIRST SZ
CLUSTER MAPS,
A. D. Hincks, V. Acquaviva, P. A. R. Ade, P.
Aguirre, M. Amiri, J. W. Appel, L. F. Barrientos,
E. S. Battistelli, J. R. Bond, B. Brown, B. Burger, J.
Chervenak, S. Das, M. J. Devlin, S. R. Dicker, W.
B. Doriese, J. Dunkley, R. Duenner, T. EssingerHileman, R. P. Fisher, J. W. Fowler, A. Hajian, M.
Halpern, M. Hasselfield, C. Hernandez-Monteagudo,
G. C. Hilton, M. Hilton, R. Hlozek, K. M.
Huffenberger, D. H. Hughes, J. P. Hughes, L. Infante,
K. D. Irwin, R. Jimenez, J. B. Juin, M. Kaul, J. Klein,
A. Kosowsky, J. M. Lau, M. Limon, Y. -T. Lin, R. H.
Lupton, T. A. Marriage, D. Marsden, K. Martocci, P.
Mauskopf, F. Menanteau, K. Moodley, H. Moseley,
C. B. Netterfield, M. D. Niemack, M. R. Nolta, L. A.
Page, L. Parker, B. Partridge, H. Quintana, B. Reid,
N. Sehgal, J. Sievers, D. N. Spergel, S. T. Staggs, O.
Stryzak, D. S. Swetz, E. R. Switzer, R. Thornton, H.
Trac, C. Tucker, L. Verde, R. Warne, G. Wilson, E.
Wollack, Y. Zhao,
Astrophysical Journal Supplement Series, 191, (2),pp. 423-438, 2010, DEC 2010.

Publications

133. B-mode polarization induced by gravitational
waves from kinks on infinite cosmic strings,
Masahiro Kawasaki, Koichi Miyamoto, Kazunori
Nakayama,
Physical Review D, 82, (10), 103504, 2010, NOV 3
2010.

166. Cluster galaxies in XMMU J2235-2557:
galaxy population properties in most massive
environments at z similar to 1.4,
V. Strazzullo, P. Rosati, M. Pannella, R. Gobat, J.
S. Santos, M. Nonino, R. Demarco, C. Lidman, M.
Tanaka, C. R. Mullis, C. Nunez, A. Rettura, M. J. Jee,
H. Boehringer, R. Bender, R. J. Bouwens, K. Dawson,
R. Fassbender, M. Franx, S. Perlmutter, M. Postman,
Astronomy & Astrophysics, 524, A17, 2010, DEC
2010.

IPMU Annual Report 2010103

168. Tracking the impact of environment on the galaxy
stellar mass function up to z similar to 1 in the 10
k zCOSMOS sample,
M. Bolzonella, K. Kovac, L. Pozzetti, E. Zucca, O.
Cucciati, S. J. Lilly, Y. Peng, A. Iovino, G. Zamorani,
D. Vergani, L. A. M. Tasca, F. Lamareille, P. Oesch,
K. Caputi, P. Kampczyk, S. Bardelli, C. Maier, U.
Abbas, C. Knobel, M. Scodeggio, C. M. Carollo, T.
Contini, J. -P. Kneib, O. Le Fevre, V. Mainieri, A.
Renzini, A. Bongiorno, G. Coppa, S. de la Torre, L.
de Ravel, P. Franzetti, B. Garilli, J. -F. Le Borgne, V.
Le Brun, M. Mignoli, R. Pello, E. Perez-Montero, E.
Ricciardelli, J. D. Silverman, M. Tanaka, L. Tresse, D.
Bottini, A. Cappi, P. Cassata, A. Cimatti, L. Guzzo,
A. M. Koekemoer, A. Leauthaud, D. Maccagni, C.
Marinoni, H. J. McCracken, P. Memeo, B. Meneux,
C. Porciani, R. Scaramella, H. Aussel, P. Capak,
C. Halliday, O. Ilbert, J. Kartaltepe, M. Salvato, D.
Sanders, C. Scarlata, N. Scoville, Y. Taniguchi, D.
Thompson,Astronomy & Astrophysics, 524, A76, 2010, DEC2010.
169. An analytical approach to the dwarf galaxies cusp
problem,
R. S. de Souza, E. E. O. Ishida,
Astronomy & Astrophysics, 524, A74, 2010, DEC2010.
170. Decaying dark matter in supersymmetric modeland cosmic-ray observations,
Koji Ishiwata, Shigeki Matsumoto, Takeo Moroi,
Journal Of High Energy Physics, (12), 006, 2010,
DEC 2010.
171. Probing dark energy and neutrino mass fromupcoming lensing experiments of CMB andgalaxies,
Toshiya Namikawa, Shun Saito, Atsushi Taruya,
Journal Of Cosmology And Astroparticle Physics,(12), 027, 2010, DEC 2010.
172. Constraint on the gravitino mass in hybrid
inflation,
Kazunori Nakayama, Fuminobu Takahashi, Tsutomu
T. Yanagida,
Journal Of Cosmology And Astroparticle Physics,(12), 010, 2010, DEC 2010.
173. LoCuSS: Subaru Weak Lensing Study of 30
Galaxy Clusters,
Nobuhiro Okabe, Masahiro Takada, Keiichi Umetsu,
Toshifumi Futamase, Graham P. Smith,Publications Of The Astronomical Society Of Japan,
62, (3), pp. 811-870, 2010.
174. Search for Outer Massive Bodies around
Transiting Planetary Systems: Candidates of Faint
Stellar Companions around HAT-P-7,
Norio Narita, Tomoyuki Kudo, Carolina Bergfors,
Makiko Nagasawa, Christian Thalmann, Bunei Sato,
Ryuji Suzuki, Ryo Kandori, Markus Janson, Miwa
Goto, Wolfgang Brandner, Shigeru Ida, Lyu Abe,
Joseph Carson, Sebastian E. Egner, Markus Feldt,
Taras Golota, Olivier Guyon, Jun Hashimoto, Yutaka
Hayano, Masahiko Hayashi, Saeko S. Hayashi,Thomas Henning, Klaus W. Hodapp, Miki Ishii,
Gillian R. Knapp, Nobuhiko Kusakabe, Masayuki
Kuzuhara, Taro Matsuo, Michael W. McElwain,

104

IPMU Annual Report 2010

Shoken M. Miyama, Jun-Ichi Morino, Amaya MoroMartin, Tetsuo Nshimura, Tae-Soo Pyo, Eugene
Serabyn, Takuya Suenaga, Hiroshi Suto, Yasuhiro
Haruhi Takahashi, Michihiro Takami, Naruhisa
Takato, Hiroshi Terada, Daigo Tomono, Edwin L.
Turner, Makoto Watanabe, Toru Yamada, Hideki
Takami, Tomonori Usuda, Motohide Tamura,
Publications Of The Astronomical Society Of Japan,
62, (3), pp. 779-786, 2010.
175. Subaru FOCAS Spectroscopic Observations ofHigh-Redshift Supernovae,
Tomoki Morokuma, Kouichi Tokita, Christopher
Lidman, Mamoru Doi, Naoki Yasuda, Greg
Aldering, Rahman Amanullah, Kyle Barbary, Kyle
Dawson, Vitaliy Fadeyev, Hannah K. Fakhouri,
Gerson Goldhaber, Ariel Goobar, Takashi Hattori,
Junji Hayano, Isobel M. Hook, D. Andrew Howell,
Hisanori Furusawa, Yutaka Ihara, Nobunari
Kashikawa, Rob A. Knop, Kohki Konishi, Joshua
Meyers, Takeshi Oda, Reynald Pain, Saul Perlmutter,
David Rubin, Anthony L. Spadafora, Nao Suzuki,
Naohiro Takanashi, Tomonori Totani, Hiroyuki
Utsunomiya, Lifan Wang,
Publications Of The Astronomical Society Of Japan,
62, (1), pp. 19-37, 2010.

183. Halo occupation distribution of massive galaxies
since z=1,
Y. Matsuoka, S. Masaki, K. Kawara, N. Sugiyama,Monthly Notices Of The Royal Astronomical Society,
410, (1), pp. 548-558, 2011, JAN 1 2011.
184. Reevaluation of Higgs-mediated mu-e transition in
the MSSM,
Junji Hisano, Shohei Sugiyama, Masato Yamanaka,
Masaki Jung Soo Yang,
Physics Letters B, 694, (4-5), pp. 380-385, 2011, JAN
3 2011.
185. Spin and chirality determination of superparticles
with long-lived stau at the LHC,
Takumi Ito, Takeo Moroi,
Physics Letters B, 694, (4-5), pp. 349-354, 2011, JAN
3 2011.
186. Soft leptogenesis and gravitino dark matter ingauge mediation,
Koichi Hamaguchi, Norimi Yokozaki,
Physics Letters B, 694, (4-5), pp. 398-401, 2011, JAN
3 2011.

176. The cost is an isoperimetric invariant,Mikael Pichot, Stephane Vassout,Journal Of Noncommutative Geometry, 4, (3), pp.
381-387, 2010.

187. Universally leptophilic dark matter from nonAbelian discrete symmetry,
Naoyuki Haba, Yuji Kajiyama, Shigeki Matsumoto,
Hiroshi Okada, Koichi Yoshioka,
Physics Letters B, 695, (5), pp. 476-481, 2011, JAN 172011.

177. THE RINGS OFWITT VECTORS FORNONCOMMUTATIVE RINGS WITH SOMERICH STRUCTURE,
Shushi Harashita,Communications In Algebra, 38, (4), pp. 1282-1290,
2010.

188. Combining cluster observables and stacked weaklensing to probe dark energy: Self-calibration ofsystematic uncertainties,
Masamune Oguri, Masahiro Takada,Physical Review D, 83, (2), 023008, 2011, JAN 18
2011.

178. On a computation of rank two Donaldson-Thomas
invariants,
Yukinobu Toda,
Communications In Number Theory And Physics, 4,(1), pp. 49-102, 2010.

189. Charge-breaking constraints on left-right mixingof stau’s,
Junji Hisano, Shohei Sugiyama,
Physics Letters B, 696, (1-2), pp. 92-96, 2011, JAN 24
2011.

179. Proper Motions with Subaru II. A Sample in the
Subaru/XMM-Newton Deep Survey Field,
Michael W. Richmond, Tomoki Morokuma, Mamoru
Doi, Yutaka Komiyama, Naoki Yasuda, Sadanori
Okamura,Publications Of The Astronomical Society Of Japan,
62, (1), pp. 91-99, 2010.

190. Color sextet vector bosons and same-sign top
quark pairs at the LHC,
Hao Zhang, Edmond L. Berger, Qing-Hong Cao,
Chuan-Ren Chen, Gabe Shaughnessy,
Physics Letters B, 696, (1-2), pp. 68-73, 2011, JAN 242011.

180. Limit Elements in the Configuration Algebra for a
Cancellative Monoid,
Kyoji Saito,
Publications Of The Research Institute For
Mathematical Sciences, 46, (1), pp. 37-113, 2010.
181. Supersymmetry Breaking and Gauge Mediation,
Ryuichiro Kitano, Hirosi Ooguri, Yutaka Ookouchi,
Annual Review Of Nuclear And Particle Science, Vol
60, 60, pp. 491-511, 2010.
182. Explosion Geometry of a Rotating 13 M-circle dot
Star Driven by the SASI-Aided Neutrino-Heating
Supernova Mechanism,
Yudai Suwa, Kei Kotake, Tomoya Takiwaki, Stuart C.
Whitehouse, Matthias Liebendoerfer, Katsuhiko Sato,
Publications Of The Astronomical Society Of Japan,
62, (6), pp. L49-L53, 2010.

191. Entropic accelerating universe,
Damien A. Easson, Paul H. Frampton, George F.
Smoot,
Physics Letters B, 696, (3), pp. 273-277, 2011, JAN 31
2011.
192. Comments on gaugino mass and landscape of
vacua,Yuichiro Nakai, Yutaka Ookouchi,
Journal Of High Energy Physics, (1), 093, 2011, JAN
2011.
193. PRODUCTION OF THE p-PROCESS NUCLEIIN THE CARBON-DEFLAGRATION MODEL
FOR TYPE Ia SUPERNOVAE,
Motohiko Kusakabe, Nobuyuki Iwamoto, Ken’ichi
Nomoto,Astrophysical Journal, 726, (1), 25, 2011, JAN 2011.
194. NLSP gluino search at the Tevatron and early
LHC,
M. Adeel Ajaib, Tong Li, Qaisar Shafi, Kai Wang,
Journal Of High Energy Physics, (1), 028, 2011, JAN
2011.

195. NON-GAUSSIAN ERROR CONTRIBUTION TO
LIKELIHOOD ANALYSIS OF THE MATTERPOWER SPECTRUM,
Ryuichi Takahashi, Naoki Yoshida, Masahiro Takada,
Takahiko Matsubara, Naoshi Sugiyama, Issha Kayo,
Takahiro Nishimichi, Shun Saito, Atsushi Taruya,
Astrophysical Journal, 726, (1), 7, 2011, JAN 2011.
196. 5D UED: flat and flavorless,Csaba Csaki, Johannes Heinonen, Jay Hubisz, Seong
Chan Park, Jing Shu,
Journal Of High Energy Physics, (1), 089, 2011, JAN
2011.
197. Strong dynamics at the Planck scale as a solution
to the cosmological moduli problem,
Fuminobu Takahashi, Tsutomu T. Yanagida,
Journal Of High Energy Physics, (1), 139, 2011, JAN
2011.
198. Running spectral index from inflation withmodulations,Takeshi Kobayashi, Fuminobu Takahashi,
Journal Of Cosmology And Astroparticle Physics, (1),026, 2011, JAN 2011.
199. Comments on scaling limits of 4d N=2 theories,
Davide Gaiotto, Nathan Seiberg, Yuji Tachikawa,
Journal Of High Energy Physics, (1), 078, 2011, JAN
2011.
200. Testing the Nambu-Goldstone hypothesis forquarks and leptons at the LHC,
Sourav K. Mandal, Mihoko Nojiri, Matthew Sudano,
Tsutomu T. Yanagida,
Journal Of High Energy Physics, (1), 131, 2011, JAN
2011.
201. On the spin-temperature evolution during theepoch of reionization,
Rajat M. Thomas, Saleem Zaroubi,Monthly Notices Of The Royal Astronomical Society,
410, (2), pp. 1377-1390, 2011, JAN 2011.
202. CONVECTIVE-REACTIVE PROTON-C-12
COMBUSTION IN SAKURAI’S OBJECT (V4334
SAGITTARII) AND IMPLICATIONS FOR THE
EVOLUTION AND YIELDS FROM THE FIRST
GENERATIONS OF STARS,
Falk Herwig, Marco Pignatari, Paul R. Woodward,
David H. Porter, Gabriel Rockefeller, Chris L. Fryer,
Michael Bennett, Raphael Hirschi,
Astrophysical Journal, 727, (2), 89, 2011, FEB 1 2011.
203. Optimizing future experimental probes ofinflation,
Damien A. Easson, Brian A. Powell,
Physical Review D, 83, (4), 043502, 2011, FEB 2
2011.

Publications

167. Cascade supersymmetry breaking and low-scalegauge mediation,
Masahiro Ibe, Yuri Shirman, Tsutomu T. Yanagida,
Journal Of High Energy Physics, (12), 027, 2010,
DEC 2010.

204. A CP-safe solution of the mu/B mu problem ofgauge mediation,
Jason L. Evans, Matthew Sudano, Tsutomu T.
Yanagida,
Physics Letters B, 696, (4), pp. 348-351, 2011, FEB 7
2011.
205. KECK SPECTROSCOPY OF FAINT 3 > z> 7 LYMAN BREAK GALAXIES: A HIGHFRACTION OF LINE EMITTERS AT
REDSHIFT SIX,
Daniel P. Stark, Richard S. Ellis, Masami Ouchi,
Astrophysical Journal Letters, 728, (1), L2, 2011, FEB
10 2011.

IPMU Annual Report 2010105

207. Ghost condensation and CPT violation in neutrino
sector,Shinji Mukohyama, Seong Chan Park,
Physics Letters B, 696, (5), pp. 505-508, 2011, FEB
14 2011.
208. Prospects for direct detection of inflationary
gravitational waves by next generationinterferometric detectors,
Sachiko Kuroyanagi, Takeshi Chiba, Naoshi
Sugiyama,
Physical Review D, 83, (4), 043514, 2011, FEB 16
2011.
209. NEAR-INFRARED MULTI-BAND
PHOTOMETRY OF THE SUBSTELLARCOMPANION GJ 758 B,
M. Janson, J. Carson, C. Thalmann, M. W. McElwain,
M. Goto, J. Crepp, J. Wisniewski, L. Abe, W.
Brandner, A. Burrows, S. Egner, M. Feldt, C. A.
Grady, T. Golota, O. Guyon, J. Hashimoto, Y. Hayano,
M. Hayashi, S. Hayashi, T. Henning, K. W. Hodapp,
M. Ishii, M. Iye, R. Kandori, G. R. Knapp, T. Kudo,
N. Kusakabe, M. Kuzuhara, T. Matsuo, S. Mayama, S.
Miyama, J-I. Morino, A. Moro-Martin, T. Nishimura,
T-S Pyo, E. Serabyn, H. Suto, R. Suzuki, M. Takami,
N. Takato, H. Terada, B. Tofflemire, D. Tomono, E.
L. Turner, M.Watanabe, T. Yamada, H. Takami, T.
Usuda, M. Tamura,
Astrophysical Journal, 728, (2), 85, 2011, FEB 20
2011.
210. THE CLUSTERING OF MASSIVE GALAXIESAT z similar to 0.5 FROM THE FIRSTSEMESTER OF BOSS DATA,
Martin White, M. Blanton, A. Bolton, D. Schlegel, J.
Tinker, A. Berlind, L. da Costa, E. Kazin, Y. -T. Lin,M. Maia, C. K. McBride, N. Padmanabhan, J. Parejko,
W. Percival, F. Prada, B. Ramos, E. Sheldon, F. deSimoni, R. Skibba, D. Thomas, D. Wake, I. Zehavi,
Z. Zheng, R. Nichol, Donald P. Schneider, Michael A.
Strauss, B. A. Weaver, David H. Weinberg,
Astrophysical Journal, 728, (2), 126, 2011, FEB 20
2011.
211. PROBING THE FAINT END OF THE QUASAR
LUMINOSITY FUNCTION AT z similar to 4 IN
THE COSMOS FIELD,
H. Ikeda, T. Nagao, K. Matsuoka, Y. Taniguchi,
Y. Shioya, J. R. Trump, P. Capak, A. Comastri, M.
Enoki, Y. Ideue, Y. Kakazu, A. M. Koekemoer, T.
Morokuma, T. Murayama, T. Saito, M. Salvato, E.
Schinnerer, N. Z. Scoville, J. D. Silverman,
Astrophysical Journal Letters, 728, (2), L25, 2011,
FEB 20 2011.
212. Neutrino mass constraint from the Sloan Digital
Sky Survey power spectrum of luminous red
galaxies and perturbation theory,
Shun Saito, Masahiro Takada, Atsushi Taruya,
Physical Review D, 83, (4), 043529, 2011, FEB 28
2011.
213. Brane holes,
Valeri P. Frolov, Shinji Mukohyama,
Physical Review D, 83, (4), 044052, 2011, FEB 28
2011.

106

IPMU Annual Report 2010

214. Abundance stratification in Type Ia supernovaeIII. The normal SN 2003du,
Masaomi Tanaka, Paolo A. Mazzali, Vallery
Stanishev, Immanuel Maurer, Wolfgang E.
Kerzendorf, Ken’ichi Nomoto,Monthly Notices Of The Royal Astronomical Society,
410, (3), pp. 1725-1738, 2011, FEB 2011.
215. Higgs chaotic inflation in standard model and
NMSSM,
Kazunori Nakayama, Fuminobu Takahashi, Journal
Of Cosmology And Astroparticle
Physics, (2), 010, 2011, FEB 2011.
216. CHARACTERIZATION OF SLOAN DIGITALSKY SURVEY STELLAR PHOTOMETRY,
Masataka Fukugita, Naoki Yasuda, Mamoru Doi,James E. Gunn, Donald G. York,
Astronomical Journal, 141, (2), 47, 2011, FEB 2011.
217. Kahler moduli double inflation,
Masahiro Kawasaki, Koichi Miyamoto,
Journal Of Cosmology And Astroparticle Physics, (2),004, 2011, FEB 2011.
218. Sunyaev-Zel’dovich power spectrum produced byprimordial magnetic fields,
Hiroyuki Tashiro, Naoshi Sugiyama,Monthly Notices Of The Royal Astronomical Society,411, (2), pp. 1284-1292, 2011, FEB 2011.
219. Gravitational Supersymmetry Breaking,Ken-iti Izawa, Taichiro Kugo, Tsutomu T. Yanagida,
Progress Of Theoretical Physics, 125, (2), pp. 261344, 2011, FEB 2011.
220. Dynamical cobordisms in general relativity andstring theory,
Simeon Hellerman, Matthew Kleban,
Journal Of High Energy Physics, (2), 022, 2011, FEB
2011.
221. THE ATACAMA COSMOLOGY TELESCOPE:
A MEASUREMENT OF THE COSMIC
MICROWAVE BACKGROUND POWER
SPECTRUM AT 148 AND 218 GHz FROM THE
2008 SOUTHERN SURVEY,
Sudeep Das, Tobias A. Marriage, Peter A. R. Ade,
Paula Aguirre, Mandana Amiri, John W. Appel, L.
Felipe Barrientos, Elia S. Battistelli, John R. Bond,
Ben Brown, Bryce Burger, Jay Chervenak, MarkJ. Devlin, Simon R. Dicker, W. Bertrand Doriese,
Joanna Dunkley, Rolando Duenner, Thomas EssingerHileman, Ryan P. Fisher, Joseph W. Fowler, Amir
Hajian, Mark Halpern, Matthew Hasselfield, Carlos
Hernandez-Monteagudo, Gene C. Hilton, Matt
Hilton, Adam D. Hincks, Renee Hlozek, Kevin M.
Huffenberger, David H. Hughes, John P. Hughes,
Leopoldo Infante, Kent D. Irwin, Jean Baptiste Juin,
Madhuri Kaul, Jeff Klein, Arthur Kosowsky, Judy
M. Lau, Michele Limon, Yen-Ting Lin, Robert H.
Lupton, Danica Marsden, Krista Martocci, Phil
Mauskopf, Felipe Menanteau, Kavilan Moodley,
Harvey Moseley, Calvin B. Netterfield, Michael D.
Niemack, Michael R. Nolta, Lyman A. Page, Lucas
Parker, Bruce Partridge, Beth Reid, Neelima Sehgal,
Blake D. Sherwin, Jon Sievers, David N. Spergel,
Suzanne T. Staggs, Daniel S. Swetz, Eric R. Switzer,
Robert Thornton, Hy Trac, Carole Tucker, Ryan
Warne, Ed Wollack, Yue Zhao,
Astrophysical Journal, 729, (1), 62, 2011, MAR 1
2011.

222. HYDRODYNAMICAL MODELS OF TYPE II
PLATEAU SUPERNOVAE,
Melina C. Bersten, Omar Benvenuto, Mario Hamuy,
Astrophysical Journal, 729, (1), 61, 2011, MAR 1
2011.
223. RE-CAPTURING COSMIC INFORMATION,
Hee-Jong Seo, Masanori Sato, Scott Dodelson,
Bhuvnesh Jain, Masahiro Takada,
Astrophysical Journal Letters, 729, (1), L11, 2011,
MAR 1 2011.
224. Constraints on theta(13) from a three-flavor
oscillation analysis of reactor antineutrinos at
KamLAND,
A. Gando, Y. Gando, K. Ichimura, H. Ikeda, K. Inoue,
Y. Kibe, Y. Kishimoto, M. Koga, Y. Minekawa, T.
Mitsui, T. Morikawa, N. Nagai, K. Nakajima, K.
Nakamura, K. Narita, I. Shimizu, Y. Shimizu, J.
Shirai, F. Suekane, A. Suzuki, H. Takahashi, N.
Takahashi, Y. Takemoto, K. Tamae, H. Watanabe,
B. D. Xu, H. Yabumoto, H. Yoshida, S. Yoshida, S.
Enomoto, A. Kozlov, H. Murayama, C. Grant, G.
Keefer, A. Piepke, T. I. Banks, T. Bloxham, J. A.
Detwiler, S. J. Freedman, B. K. Fujikawa, K. Han,
R. Kadel, T. O’Donnell, H. M. Steiner, D. A. Dwyer,
R. D.McKeown, C. Zhang, B. E. Berger, C. E. Lane,
J. Maricic, T. Miletic, M. Batygov, J. G. Learned,
S. Matsuno, M. Sakai, G. A. Horton-Smith, K. E.
Downum, G. Gratta, Y. Efremenko, O. Perevozchikov,
H. J. Karwowski, D. M. Markoff, W. Tornow, K. M.
Heeger, M. P. Decowski,
Physical Review D, 83, (5), 052002, 2011, MAR 4
2011.
225. A theory of extra radiation in the Universe,
Kazunori Nakayama, Fuminobu Takahashi, Tsutomu
T. Yanagida,
Physics Letters B, 697, (4), pp. 275-279, 2011, MAR
14 2011.
226 Destruction of Be-7 in big bang nucleosynthesis
via long-lived sub-strongly interacting massive. particles as a solution to the Li problem,
Masahiro Kawasaki, Motohiko Kusakabe,
Physical Review D, 83, (5), 055011, 2011, MAR 18
2011.
227. Solar neutrino results in Super-Kamiokande-III,
K. Abe, Y. Hayato, T. Iida, M. Ikeda, C. Ishihara,
K. Iyogi, J. Kameda, K. Kobayashi, Y. Koshio, Y.
Kozuma, M. Miura, S. Moriyama, M. Nakahata,
S. Nakayama, Y. Obayashi, H. Ogawa, H. Sekiya,
M. Shiozawa, Y. Suzuki, A. Takeda, Y. Takenaga,
K. Ueno, K. Ueshima, H. Watanabe, S. Yamada,T. Yokozawa, S. Hazama, H. Kaji, T. Kajita, K.
Kaneyuki, T. McLachlan, K. Okumura, Y. Shimizu,
N. Tanimoto, M. R. Vagins, L. Labarga, L. M.
Magro, F. Dufour, E. Kearns, M. Litos, J. L. Raaf, J.
L. Stone, L. R. Sulak, W. Wang, M. Goldhaber, K.
Bays, D. Casper, J. P. Cravens, W. R. Kropp, S. Mine,
C. Regis, A. Renshaw, M. B. Smy, H. W. Sobel, K.
S. Ganezer, J. Hill, W. E. Keig, J. S. Jang, J. Y. Kim,
I. T. Lim, J. Albert, R. Wendell, T. Wongjirad, K.
Scholberg, C. W. Walter, T. Ishizuka, S. Tasaka, J.
G. Learned, S. Matsuno, Y. Watanabe, T. Hasegawa,T. Ishida, T. Ishii, T. Kobayashi, T. Nakadaira, K.
Nakamura, K. Nishikawa, H. Nishino, Y. Oyama, K.
Sakashita, T. Sekiguchi, T. Tsukamoto, A. T. Suzuki,
Y. Takeuchi, A. Minamino, T. Nakaya, Y. Fukuda, Y.
Itow, G. Mitsuka, T. Tanaka, C. K. Jung, G. Lopez,
C. McGrew, R. Terri, C. Yanagisawa, N. Tamura, H.
Ishino, A. Kibayashi, S. Mino, T. Mori, M. Sakuda, H.
Toyota, Y. Kuno, M. Yoshida, S. B. Kim, B. S. Yang,
T. Ishizuka, H. Okazawa, Y. Choi, K. Nishijima, Y.

Yokosawa, M. Koshiba, Y. Totsuka, M. Yokoyama, S.
Chen, Y. Heng, Z. Yang, H. Zhang, D. Kielczewska, P.
Mijakowski, K. Connolly, M. Dziomba, E. Thrane, R.
J. Wilkes,
Physical Review D, 83, (5), 052010, 2011, MAR 24
2011.
228. CRYSTALMELTING ANDWALL CROSSING
PHENOMENA,
Masahito Yamazaki,
International Journal Of Modern Physics A, 26, (7-8),
pp. 1097-1228, 2011, MAR 30 2011.
229. Origins of hidden sector dark matter I: cosmology,
Clifford Cheung, Gilly Elor, Lawrence J. Hall, Piyush
Kumar,
Journal Of High Energy Physics, (3), 042, 2011, MAR
2011.
230. On W-algebras and the symmetries of defects of
6d N = (2,0) theory,
Yuji Tachikawa,
Journal Of High Energy Physics, (3), 043, 2011, MAR
2011.
231. Neutrino mass hierarchy determination using
reactor antineutrinos,
Pomita Ghoshal, S. T. Petcov,
Journal Of High Energy Physics, (3), 058, 2011, MAR
2011.
232. Higgs portal to visible supersymmetry breaking,K-I Izawa, Yuichiro Nakai, Takashi Shimomura,
Journal Of High Energy Physics, (3), 007, 2011, MAR
2011.
233. Hubble parameter reconstruction from a principal
component analysis: minimizing the bias,
E. E. O. Ishida, R. S. de Souza,
Astronomy & Astrophysics, 527, A49, 2011, MAR
2011.
234. SHOCK BREAKOUT IN TYPE II PLATEAUSUPERNOVAE: PROSPECTS FORHIGHREDSHIFT SUPERNOVA SURVEYS,
N. Tominaga, T. Morokuma, S. I. Blinnikov, P.
Baklanov, E. I. Sorokina, K. Nomoto,
Astrophysical Journal Supplement Series, 193, (1),2011, MAR 2011.
235. Number and entropy of halo black holes,
Paul H. Frampton, Kevin Ludwick,
Astroparticle Physics, 34, (8), pp. 617-619, 2011,
MAR 2011.
236. Shear power spectrum reconstruction using thepseudo-spectrum method,
Chiaki Hikage, Masahiro Takada, Takashi Hamana,
David Spergel,
Monthly Notices Of The Royal Astronomical Society,412, (1), pp. 65-74, 2011, MAR 2011.

IPMU Annual Report 2010

Publications

206. Spatially Modulated Phase in the Holographic
Description of Quark-Gluon Plasma,
Hirosi Ooguri, Chang-Soon Park,
Physical Review Letters, 106, (6), 061601, 2011, FEB
11 2011.

107

JFY2010
IPMU10-0053
T. Eguchi H. Ooguri Y. Tachikawa
Notes on the K3 Surface and the Mathieu group M 24
IPMU10-0054
Kyoungchul Kong, Seong Chan Park, Thomas G. Rizzo
A Vectorlike fourth generation with a discrete
symmetry from split-UED
IPMU10-0055
Paul Howard Frampton
Solution to the Dark Energy Problem
IPMU10-0056
Kazuya Yonekura
Notes on Operator Equations of Supercurrent
Mutliplets and Anomaly Puzzle in SupersymmetricField Theories
IPMU10-0057
Toshiya Imoto, Tadakatsu Sakai, Shigeki Sugimoto
Mesons as Open Strings in a Holographic Dual of QCD
Prog. Theo. Phys. 124, 263 (2010), date of acceptance2010.07.12, arXiv:1005.0655 [hep-th]
IPMU10-0058
Paul Howard Frampton
Possible Solution of Dark Matter, The Solution of Dark
Energy and Gell-Mann as Great Theoretician
IPMU10-0059
Keisuke Izumi, Shinji Mukohyama
Trispectrum from Ghost Inflation
arXiv:1004.1776 [hep-th]
IPMU10-0060
Paul Howard Frampton, Xiao-Gang He
Hunting for New Physics with Unitarity
Boomerangs
IPMU10-0061
Cosimo Bambi, Naoki Yoshida
Shape and position of the shadow in the delta = 2
Tomimatsu-Sato space-timeClass. Quantum Grav. 27,205006(2010), date of acceptance2010.07.27, arXiv:1004.3149 [gr-qc]
IPMU10-0062
Chiaki Hikage, Masahiro Takada, Takashi Hamana,
David N. Spergel
Shear Power Spectrum Reconstruction using PseudoSpectrum Method
MNRAS, arXiv:1004.3542 [astro-ph]
IPMU10-0063
Paul Howard Frampton
Dynamical Friction in Galaxy Clusters
IPMU10-0064
Paul Howard Frampton, Simeon Hellerman, Matt Sudano
Baryon Number Violation in Strong Interactions

108

IPMU Annual Report 2010

IPMU10-0075
Jonas Schmidt, Christoph Weniger, Tsutomu T.
Yanagida
Dynamical Matter Parity Breaking and Gravitino Dark
MatterPhys. Lett. B

IPMU10-0088
Domenico Orlando, Susanne Reffert
Relating Gauge Theories via Gauge/Bethe
Correspondence
JHEP 1010, 071, date of acceptance 2010.05.25,
arXiv:1005.4445 [hep-th]

IPMU10-0065
Alexander Getmanenko
Resurgent analysis of the Witten Laplacian in one
dimension – II

IPMU10-0076
Edmond L. Berger, Qing-Hong Cao, Chuan-Ren Chen,
Gabe Shaughnessy, Hao Zhang
Search for color sextet scalars at the Tevatron and early
LHC

IPMU10-0089
Damien A. Easson and Brian A. Powell
The Degenerate Observables of Inflationary
Models

IPMU10-0066
Junji Hisano, Koji Ishiwata, and Natsumi Nagata
A complete calculation of direct detection of wino dark
matterPhys. Lett. B 690, 311, date of acceptance 2010.05.20,
arXiv:1004.4090 [hep-ph]

IPMU10-0077
Satoshi Kondo, Seidai Yasuda
On the second rational K-group of an elliptic curve overglobal fields of positive characteristic
Proc. Lond. Math. Soc. to appear, date of acceptance2010.10.07

IPMU10-0067
Hirotaka Hayashi, Teruhiko Kawano, Yoichi Tsuchiya andTaizan WatariMore on Dimension-4 Proton Decay Problem in
F-theory: — Spectral Surface, Discriminant Locus andMonodromy —Nucl. Phys. B B840, 304 (2010), date of acceptance2010.07.05, arXiv:1004.3870 [hep-th]

IPMU10-0078
Hirosi Ooguri, Piotr Sulkowski, Masahito Yamazaki
Wall Crossing As Seen By Matrix Models

IPMU10-0068
Izawa K.-I.
Dynamical SUSY breaking in SQCD: 25 years later
Prog. Theo. Phys.

IPMU10-0080
Paul Howard Frampton
Holographic Principle and the Surface of Last Scatter

IPMU10-0069
Izawa K.-I., Y. Nakai, Ryo Takahashi
Nonlinearly Realized Extended Supergravity
arXiv:1003.0740 [hep-ph]
IPMU10-0070
Oscar A. Bedoya, L. Ibiapina Bevilaqua, Andrei
Mikhailov, Victor O. Rivelles
Notes on β-deformations of the pure spinor superstringin AdS5 × S5
ATMP
IPMU10-0071
Sourav K. Mandal, Mihoko Nojiri, Matthew Sudano,
Tsutomu T. Yanagida
Testing the Nambu-Goldstone Hypothesis for Quarks
and Leptons at the LHC
JHEP, arXiv:1004.4164 [hep-ph]
IPMU10-0072
Takashi Moriya, Nozomu Tominaga, Masaomi
Tanaka,Keiichi Maeda, Ken’ichi Nomoto
A Core-Collapse Supernova Model for the Extremely
Luminous Type Ic Supernova 2007bi: An Alternative to
the Pair-Instability Supernova
Model
Astrophys. J. Lett., arXiv:1004.2967 [astro-ph]
IPMU10-0073
Michael Dine, Fuminobu Takahashi, Tsutomu T.
Yanagida
Discrete R Symmetries and Domain Walls
JHEP, arXiv:1005.3613 [hep-th]
IPMU10-0074
Chuan-Ren Chen, Paul H. Frampton, Fuminobu Takahashi,
Tsutomu T. Yanagida
Probing Variant Axion Models at LHCJHEP 1006,059 (2010) , date of acceptance 2010.05.28,
arXiv:1005.1185 [hep-ph]

IPMU10-0079
Ryosuke Sato, Satoshi Shirai
LHC Reach of Low Scale Gauge Mediation with
Perturbatively Stable Vacuum

IPMU10-0081
Mihoko M. Nojiri, Kazuki Sakurai, Bryan R. Webber
Reconstructing particle masses from pairs of
decay chains
IPMU10-0082
F.R. Klinkhamer
QCD-scale modified-gravity universe
Phys. Rev. D, arXiv:arXiv:1005.2885 [astro-ph]
IPMU10-0083
Sumit R. Das, Tatsuma Nishioka, Tadashi Takayanagi
Probe Branes, Time-dependent Couplings andThermalization in AdS/CFTJHEP 1007:071,2010, date of acceptance 2010.06.23
IPMU10-0084
Masayuki Tanaka, Alexis Finoguenov, Yoshihiro Ueda
A spectroscopically confirmed X-ray cluster
at z=1.62 with a possible companion in the
Subaru/XMM-Newton deep field
Astrophys. J. Lett., arXiv:1004.3606 [astro-ph]
IPMU10-0085
Masayuki Tanaka, Carlos De Breuck, Bram Venemans,
Jaron Kurk
The environmental dependence of galaxy properties at
z=2
A&A, arXiv:1005.2253 [astro-ph]
IPMU10-0086
Junji Hisano, Shohei Sugiyama, Masato Yamanaka, andMasaki Jung Soo Yang
Reevaluation of Higgs-Mediated mu-e Transition in the
MSSM
Phys. Lett. B, arXiv:1005.3648 [hep-ph]
IPMU10-0087
Yoshio Kikukawa, Kouta Usui
Reflection Positivity of Free Overlap FermionsPhys. Rev. D 82:114503(2010), date of acceptance2010.12.02

IPMU10-0090
Ching-Ming Chen, Johanna Knapp, Maximilian Kreuzer,
Christoph Mayrhofer
Global SO(10) F-Theory GUTs
JHEP 10(2010)057, date of acceptance 2010.09.27,
arXiv:1005.5735 [hep-th]
IPMU10-0091
Chuan-Ren Chen, Mihoko M. Nojiri, Warintorn
Sreethawong
Search for the Elusive Higgs Boson Using Jet
Structure at LHC
IPMU10-0092
G. P. Smith et al. (including M. Takada)
LoCuSS: Probing Galaxy Transformation
Physics with HerschelA&A Publ. Astron. Soc. Japan 62, 811-870 (2010),
date of acceptance 2010.06.03, arXiv:arXiv:1005.3816[astro-ph]
IPMU10-0093
Antonio De Felice, Shinji Mukohyama, Shinji Tsujikawa
Density perturbations in general modified gravitational
theories
arXiv:1006.0281 [astro-ph]
IPMU10-0094
Csaba Csakia, Johannes Heinonen, Jay Hubisz, Seong
Chan Park, Jing Shu
5D UED: Flat and Flavorless
IPMU10-0095
Alexander Kusenko, Fuminobu Takahashi, Tsutomu T.
Yanagida
Dark Matter from Split Seesaw
Phys. Lett. B 693 (2010) 144-148, date of acceptance2010.08.12, arXiv:1006.1731 [astro-ph]
IPMU10-0096
Domenico Orlando, Seong Chan Park
Compact hyperbolic extra dimensions: a Mtheory
solution and its implications for the LHC
JHEP 08, 006, date of acceptance 2010.06.09
IPMU10-0097
Cosimo Bambi, Naoki Yoshida
3D simulations of the accretion process in Kerr spacetime with arbitrary value of the spin parameter
Phys. Rev. D 82,064002(2010), date of acceptance2010.08.06, arXiv:1006.4296 [gr-qc]
IPMU10-0098
F.R. Klinkhamer
Newtonian gravity as an entropic force: Towards aderivation of G
Phys. Lett. B, arXiv:1006.2094 [hep-th]

Preprints

13 Preprints

IPMU10-0099
T. T. Yanagida, Kazuya Yonekura
A Conformal Gauge Mediation and Dark Matter with
Only One Parameter

IPMU Annual Report 2010

109

IPMU10-0101
Sergey Galkin
G-minimal varieties are quantum minimal
IPMU10-0102
Fuminobu Takahashi
Linear Inflation from Running Kinetic Term inSupergravity
Phys. Lett. B 693 (2010) 140-143, date of acceptance2010.08.14, arXiv:1006.2801 [hep-ph]
IPMU10-0103
Yi-Fu Cai and Damien A. Easson
Black Holes in an Asymptotically Safe Gravity Theory
JCAP, arXiv:1007.1317 [hep-th]
IPMU10-0104
Simeon Hellerman, Cornelius Schmidt-Colinet
Bounds for State Degeneracies in 2D Conformal Field
TheoryarXiv:1007.0756 [astro-ph]
IPMU10-0105
Shun Saito, Masahiro Takada, Atsushi Taruya
Neutrino mass constraint with SDSS LRG power
spectrum and perturbation theory
Phys. Rev. D Publ. Astron. Soc. Japan62, 811-870 (2010), date of acceptance 2010.06.25,
arXiv:arXiv:1005.3816 [astro-ph]
IPMU10-0106
Takashi Moriya, Nozomu Tominaga, Masaomi Tanaka,
Ken’ichi Nomoto, Daniel N. Sauer, Paolo A. Mazzali,
Keiichi Maeda, Tomoharu Suzuki
Fallback Supernovae: A Possible Origin of Peculiar
Supernovae with Extremely Low Explosion
Energies
Astrophys. J., arXiv:1006.5336 [astro-ph]
IPMU10-0107
Satoshi Kondo, Seidai Yasuda
Local L and epsilon factors in Hecke eigenvalues
IPMU10-0108
Daniel Krefl and Johannes Walcher
Extended Holomorphic Anomaly in Gauge Theory
arXiv:1007.0263 [hep-th]
IPMU10-0109
Takahiro Nishimichi, Atsushi Taruya, Kazuya Koyama,
Cristiano Sabiu
Scale Dependence of Halo Bispectrum from
Non-Gaussian Initial Conditions in CosmologicalN-body Simulations
JCAP 07, 002(2010), date of acceptance 2010.06.10,
arXiv:0911.4768 [astro-ph]
IPMU10-0110
Hirosi Ooguri, Chang-Soon Park
Holographic End-Point Of Spatially Modulated Phase
Transition

IPMU10-0111
Keiichi Maeda, Stefano Benetti, Maximilian
Stritzinger, Friedrich K. Roepke, Gaston Folatelli, Jesper
Sollerman, Stefan Taubenberger, Ken’ichi Nomoto,
Giorgos Leloudas, Mario Hamuy, Masaomi Tanaka, Paolo
A. Mazzali, Nancy Elias-Rosa
An asymmetric explosion as the origin of spectral
evolution diversity in type Ia supernovae
Nature 466, 82 (2010), date of acceptance 2010.04.20,
arXiv:1006.5888 [astro-ph]
IPMU10-0112
Yong-Seon Song, Cristiano G. Sabiu, Issha Kayo, Robert C.
Nichol
Measuring Coherent Motions in the Universe
arXiv:1006.4630 [astro-ph]
IPMU10-0113
J. Hisano, K.Ishiwata, and N.Nagata
Gluon contribution to the dark matter direct
detection
Phys. Rev. D 82,115007, date of acceptance2010.12.09, arXiv:1007.2601 [hep-ph]
IPMU10-0114
Yen-Ting Lin, Yue Shen, Michael A. Strauss, Gordon
T. Richards, Ragnhild Lunnan
On the Populations of Radio Galaxies with Extended
Morphology at z < 0.3
Astrophys. J. 723, 1119 (2010), date of acceptance2010.08.31, arXiv:1006.5452 [astro-ph]

IPMU Annual Report 2010

IPMU10-0122
H.-J. Seo, M. Sato, S. Dodelson, B. Jain, M. Takada
Re-capturing cosmic information
arXiv:1008.0349 [astro-ph]
IPMU10-0123
N. Okabe et al. (including M. Takada)
LoCuSS: Calibrating Mass-Observable Scaling
Relations for Cluster Cosmology with Subaru Weak
Lensing Observations
Astrophys. J., arXiv:1007.3816 [astro-ph]
IPMU10-0124
F. High et al (including Y.-T. Lin)
Optical Redshift and Richness Estimates for Galaxy
Clusters Selected with the Sunyaev- Zel’dovich Effectfrom 2008 South Pole Telescope Observations
Astrophys. J. 723, 1736 (2010), date of acceptance2010.09.04, arXiv:1003.0005 [astro-ph]
IPMU10-0125
F. Menantean et al (including Y.-T. Lin)
The Atacama Cosmology Telescope: Physical
Properties and Purity of a Galaxy Cluster Sample
Selected via the Sunyaev-Zel’dovich EffectAstrophys. J. 723, 1523 (2010), date of acceptance2010.09.08, arXiv:1006.5126 [astro-ph]

IPMU10-0115
Seong Chan Park, Jing Shu, Kai Wang, Tsutomu T.
Yanagida
TeV scale horizontal gauge symmetry and its
implications in B Physics
arXiv:1008.4445 [hep-ph]

IPMU10-0126
Shinsei Ryu and Tadashi Takayanagi
Topological Insulators and Superconductors
from String Theory
Phys. Rev. D 2010, date of acceptance 2010.09.24

IPMU10-0116
Roland de Putter, Masahiro Takada
Halo-Galaxy Lensing: A Full-Sky ApproachPhys. Rev. D, arXiv:1007.4809 [astro-ph]

IPMU10-0127
Kazunori Nakayama, Fuminobu Takahashi, Tsutomu T.
Yanagida
Constraint on the gravitino mass in hybrid inflation

IPMU10-0117
C.S. Kim, Ying Li
Comments on |Vub/Vcb| and |Vub| from Nonleptonic B
Decays within the Perturbative QCD ApproachPhys. Lett. B, arXiv:1007.2291 [hep-ph]

IPMU10-0128
Yukinobu Toda
Curve counting invariants around the conifold point
arXiv:1007.4641 [math]

IPMU10-0118
Yukinobu Toda
Moduli spaces of stable quotients and the wallcrossing
phenomena
Compositio Math, arXiv:1005.3743 [math]
IPMU10-0119
R. Ohsawa, I. Sakon, T. Onaka, M. Tanaka, T. Moriya,T.
Nozawa, K. Maeda, K. Nomoto, N. Tominaga, F.Usui, H.
Matsuhara, T. Nakagawa, H. Murakami
Observations of the Optical Transient in NGC 300
with AKARI/IRC: Possibilities of Asymmetric Dust
Formation
Astrophys. J. 718, 1456 (2010), date of acceptance2010.06.10, arXiv:1006.2213 [astro-ph]
IPMU10-0120
Shinji Mukohyama
Horava-Lifshitz Cosmology: A Review
arXiv:1007.5199 [hep-th]

110

IPMU10-0121
Koichi Hamaguchi and Norimi Yokozaki
Soft Leptogenesis and Gravitino Dark Matter in Gauge
Mediation

IPMU10-0133
Keisuke Izumi, Takeshi Kobayashi, Shinji Mukohyama
Non-Gaussianity from Lifshitz Scalar
JCAP 10(2010)031, date of acceptance 2010.10.07,
arXiv:1008.1406 [hep-th]
IPMU10-0134
Antoine Calvez, Alexander Kusenko, Shigehiro Nagataki
Role of Galactic sources and magnetic fields informing the observed energy-dependent composition ofultrahigh-energy cosmic rays
Phys. Rev. Lett. 105, 091101 (2010), date of acceptance2010.07.26, arXiv:1004.2535 [astro-ph]
IPMU10-0135
Shin’ichiro Ando, Alexander Kusenko
Interactions of keV sterile neutrinos with matter
Phys. Rev. D 81, 113006 (2010), date of acceptance2010.06.03, arXiv:1001.5273 [hep-ph]
IPMU10-0136
Alexander Kusenko
Past Galactic GRBs, and the origin and composition ofultrahigh-energy cosmic rays
arxiv:1007.0961 [astro-ph]
IPMU10-0137
Motoi Endo, Koichi Hamaguchi, Kouhei Nakaji
Probing High Reheating Temperature Scenarios at the
LHC with Long-Lived Staus
IPMU10-0138
Kazunori Nakayama and Fuminobu Takahashi
Running Kinetic Inflation
JCAP, arXiv:1008.2956 [hep-ph]
IPMU10-0139
Jason L. Evans, Matthew Sudano, Tsutomu T.
Yanagida
A CP-safe solution of the mu/Bmu problem of gauge
mediation
JHEP
IPMU10-0140
Masahiro Ibe, Yuri Shirman, Tsutomu T. Yanagida
Cascade supersymmetry breaking and low-scale gauge
mediation

IPMU10-0129
Thomas T. Dumitrescu, Zohar Komargodski, Matthew
SudanoGlobal Symmetries and D-terms in SupersymmetricField Theories
JHEP

IPMU10-0141
Masaomi Tanaka, Paolo A. Mazzali, Vallery Stanishev,
Immanuel Maurer, Wolfgang E. Kerzendorf, Ken’ichi
NomotoAbundance stratification in Type Ia supernovae - III.
The normal SN 2003du
MNRAS, arXiv:1008.3140 [astro-ph]

IPMU10-0130
W. S. Cho, W. Klemm, M. M. Nojiri
Mass Measurement in Boosted Decay Systems at
Hadron Colliders
Phys. Rev. Lett., arXiv:1008.0391 [hep-ph]

IPMU10-0142
Tadashi Takayanagi, Tomonori Ugajin
Measuring Black Hole Formations by Entanglement via
Coarse-graining
JHEP 11(2010)054 , date of acceptance 2010.10.26

IPMU10-0131
W. S. Cho, W. Klemm, S. Mandal, M. M. Nojiri
New Particle Mass Spectrometry at the LHC :Resolving Combinatoric Endpoints

IPMU10-0143
K. Izawa, T. Kugo and T.T. Yanagida
Gravitational Supersymmetry Breaking
PTP

IPMU10-0132
Cosimo Bambi
Violation of the Carter-Israel conjecture andits astrophysical implications

IPMU10-0144
Rich Bielby, Alexis Finoguenov, Masayuki Tanaka, et al.
The WIRCAM Deep Infrared Cluster Survey I: Groups
and Clusters at z > 1.1
A&A, arXiv:1007.5236 [astro-ph]

IPMU Annual Report 2010

Preprints

IPMU10-0100
Sergey Galkin, Alexandr Usnich
Toric degenerations in the mirror: Laurent
phenomenon for Landau-Ginzburg potential

111

IPMU10-0146
Seong Chan Park and Kai Wang
Recovering Seesaw in Supersymmetry
Phys. Rev. D, arXiv:1011.3621 [hep-ph]
IPMU10-0147
Cosimo Bambi, Naoki Yoshida
Thick disk accretion in Kerr space-time with
arbitrary spin parameters
Phys. Rev. D 82,124037(2010), date of acceptance2010.11.30, arXiv:1009.5080 [gr-qc]
IPMU10-0148
Masahiro Kawasaki, Naoya Kitajima, Kazunori
Nakayama
Inflation from a Supersymmetric Axion Model
Phys. Rev. Lett.
IPMU10-0149
Shinji Mukohyama and Seong Chan Park
Ghost condensation and CPT violation in neutrino
sector
IPMU10-0150
Sergey Galkin
G-Fano threefolds are mirror-modular
IPMU10-0151
Patrick Valageas, Takahiro Nishimichi
Combining perturbation theories with halomodelsA&A, arXiv:1009.0597 [astro-ph]
IPMU10-0152
Atsushi Taruya, Takahiro Nishimichi and Shun Saito
Baryon Acoustic Oscillations in 2D: Modeling Redshiftspace Power Spectrum from Perturbation Theory
Phys. Rev. D, arXiv:1006.0699 [astro-ph]
IPMU10-0153
Min-xin Huang, Albrecht Klemm
Direct Integration for General Omega Backgrounds
arXiv:1009.1126 [hep-th]
IPMU10-0154
Ryo Saito and Satoshi Shirai
Primordial Black Hole as a Source of the Boost Factor
IPMU10-0155
Matthew Sudano
General Gaugino Mediation
JHEP
IPMU10-0156
Simeon Hellerman and Matthew Kleban
Dynamical Cobordisms in General Relativity andString Theory
IPMU10-0157
Andreas Karch, Joseph Maciejko, Tadashi Takayanagi
Holographic Fractional Topological Insulators in 2+1
and 1+1 dimensions
JHEP
IPMU10-0158
Motoi Endo, Satoshi Shirai, Tsutomu T. Yanagida
Split Generation in the SUSY Mass Spectrum and Bs −Bs Mixing
Phys. Lett. B

112

IPMU Annual Report 2010

IPMU10-0161
M. Sato, M. Takada, T. Hamana, T. Matsubara
Simulations of Wide-Field Weak Lensing Surveys II:
Covariance Matrix of Real Space Correlation Functions
Astrophys. J., arXiv:1009.2558 [astro-ph]

IPMU10-0170
A. Gando, Y. Gando, K. Ichimura, H. Ikeda, K. Inoue, Y.
Kibe, Y. Kishimoto, M. Koga, Y. Minekawa, T. Mitsui,
T. Morikawa, N. Nagai, K. Nakajima, K. Nakamura, K.
Narita, I. Shimizu, Y. Shimizu, J. Shirai, F. Suekane, A.
Suzuki, H. Takahashi, N. Takahashi, Y. Takemoto, K.
Tamae, H. Watanabe, B.D. Xu, H. Yabumoto, H. Yoshida,
S. Yoshida, S. Enomoto, A. Kozlov, H. Murayama, C.
Grant, G. Keefer, A. Piepke, T.I. Banks, T. Bloxham, J.A.
Detwiler, S.J. Freedman, B.K. Fujikawa, K. Han, R. Kadel,
T. O’Donnell, H.M. Steiner, D.A. Dwyer, R.D. McKeown,
C. Zhang, B.E. Berger, C.E. Lane, J. Maricic, T. Miletic,
M. Batygov, J.G. Learned, S. Matsuno, M. Sakai, G.A.
Horton-Smith, K.E. Downum, G. Gratta, Y. Efremenko,
O. Perevozchikov, H.J. Karwowski, D.M. Markoff, W.
Tornow, K.M. Heeger, M.P. Decowski
Enhanced Constraints on θ13 from A Three- Flavor
Oscillation Analysis of Reactor Antineutrinos at
KamLAND
Phys. Rev. D, arXiv:1009.4771 [hep-ph]

IPMU10-0162
Masamune Oguri and Masahiro Takada
Combining cluster observables and stacked
weak lensing to probe dark energy: selfcalibration ofsystematic uncertainties
Phys. Rev. D, arXiv:1010.0744 [astro-ph]

IPMU10-0171
Takashi Moriya, Nozomu Tominaga, Sergei I. Blinnikov,
Petr V. Baklanov, Elena I. Sorokina
Ultraviolet-Bright Type IIP Supernovae from Massive
Type IIP Supernova Progenitors
MNRAS, arXiv:1009.5799 [astro-ph]

IPMU10-0163
Damien A. Easson and Brian A. Powell
Identifying the Inflaton
arXiv: 1009.3741v1 [astro-ph]

IPMU10-0172
Kyoji Saito
Growth partition functions for cancellative infinite
monoids
Publ. RIMS, Kyoto Univ.

IPMU10-0159
Shin’ichiro Ando, Alexander Kusenko
Evidence for gamma-ray halos around active galactic
nuclei and the first measurement of intergalacticmagnetic fields
Astrophys. J. Lett. 722, L39 (2010), date of acceptance2010.09.01, arXiv:1005.1924 [astro-ph]
IPMU10-0160
Kazunori Nakayama and Fuminobu Takahashi
General Analaysis of Inflation in the Jordan frame
Supergravity
JCAP JCAP11(2010)039, date of acceptance2010.11.15, arXiv:1009.3399 [hep-ph]

IPMU10-0164
Damien A. Easson and Brian A. Powell”Breaking observational degeneracies and optimizing
constraints in canonical inflationary models with futurecosmological probes
IPMU10-0165
Damien A. Easson and Brian A. Powell
Prospects for resolving observational degeneracies andimproving reconstruction in noncanonical inflationarymodels
IPMU10-0166
Antoine Calvez and Alexander Kusenko
Can past gamma-ray bursts explain both INTEGRAL
and ATIC/PAMELA/Fermi anomalies simultaneously?
Phys. Rev. D 82, 063005 (2010), date of acceptance2010.09.20, arXiv:1003.0045 [astro-ph]
IPMU10-0167
Ian M. Shoemaker, Kalliopi Petraki, Alexander
Kusenko
Collider signatures of sterile neutrinos in models with agauge-singlet Higgs
JHEP, arXiv:1006.5458 [hep-ph]
IPMU10-0168
Hao Zhang, Edmond L. Berger, Qing-Hong Cao,
Chuan-Ren Chen and Gabe Shaughnessy
Color Sextet Vector Bosons at the LHC
IPMU10-0169
Min-xin Huang
Higher Genus BMN correlators: factorization andrecursion relation
arXiv:1009.5447 [hep-th]

IPMU10-0173
Mihoko M. Nojiri and Kazuki Sakurai
Controlling ISR in sparticle mass reconstruction
arXiv:1008.1813 [hep-ph]
IPMU10-0174
Sung-Gi Kim, Nobuhiro Maekawa , Keiko I. Nagao ,Mihoko M. Nojiri , Kazuki Sakurai
LHC signature of supersymmetric models with nonuniversal sfermion masses
JHEP 0910, 005 ( 2009), date of acceptance 2009.09.08,
arXiv:0907.4234 [hep-ph]
IPMU10-0175
Johan Alwall, Kenji Hiramatsu , Mihoko M. Nojiri,
Yasuhiro Shimizu
Novel reconstruction technique for New Physics
processes with inital state radiation
Phys. Rev. Lett. 103,151802(2009) , date of acceptance2009.10.09, arXiv:j0905.1201 [hep-ph]
IPMU10-0176
Norita Kawanaka, Kunihito Ioka , Mihoko M. Nojiri
Cosmic-Ray Electron Excess from Pulsars in Spiky or
Smooth? Continuous and Multiple
Electron/Positron injections
Astrophys. J. 710,958(2010) , date of acceptance2010.01.04, arXiv:0903.3782 [astro-ph]
IPMU10-0177
Junji Hisano , Mihoko M. Nojiri , Warintorn Sreethawong
Discriminating Electroweak-ino Parameter Ordering
at the LHC and its Impact on LFV Studies
JHEP 0906, 044(2009) , date of acceptance 2009.05.28,
arXiv:0812.4496 [hep-ph]

IPMU10-0178
Rafael S. de Souza and Emille E. O. Ishida
An analytical approach to the dwarf galaxies cusp
problemA&A 524, A74 (2010), date of acceptance 2010.09.24,
IPMU10-0179
Raphael Flauger, Enrico Pajer, Stefanos Papanikolau
A Striped Holographic Superconductor
arXiv:1010.1775 [hep-th]
IPMU10-0180
Silverman, J.D., Mainieri, V., Salvato, M. et al.
The Extended Chandra Deep Field-South Survey:
Optical spectroscopy of faint X-ray sources
with the VLT and Keck
Astrophys. J. 191, 1 (2010), date of acceptance2010.09.28, arXiv:1009.1923 [astro-ph]
IPMU10-0181
Cosimo Bambi, Enrico Barausse
Constraining the quadrupole moment of stellarmass
black-hole candidates with the continuum fitting
methodarXiv:1012.2007 [gr-qc]
IPMU10-0182
Xue, Y.Q., Brandt, W. N., Silverman, J.D.
Color-Magnitude Relations of Active and Nonactive
Galaxies in the Chandra Deep Fields: High-redshift
Constraints and Stellar-mass Selection Effects
ApJ 720, 368 (2010), date of acceptance 2010.07.07,
arXiv:1007.1453 [astro-ph]
IPMU10-0183
Brusa, M., Civano, F., Comastri, A., Silverman, J. et al.
The XMM-Newton Wide-field Survey in the
Cosmos Field (XMM-COSMOS): Demography
and Multiwavelength Properties of Obscured andUnobscured Luminous Active Galactic Nuclei
Astrophys. J. 716, 348 (2010), date of acceptance2010.04.15
IPMU10-0184
Wei Li and Tadashi Takayanagi
Holography and Entanglement in Flat Spacetime
Phys. Rev. D
IPMU10-0185
Masahiro Kawasaki and Koichi Miyamoto
Kahler moduli double inflation
JCAP
IPMU10-0186
Toshitake Kohno
Hyperplane arrangements, local system homology anditerated integrals
ASPM
IPMU10-0187
Toshitake Kohno
KZ equation - structure of monodromy representations
and their applications to invariants of knots
IPMU10-0188
Yuichiro Nakai and Yutaka Ookouchi
Gaugino Mass and Landscape of Vacua

Preprints

IPMU10-0145
Kazunori Nakayama and Fuminobu Takahashi
Higgs Chaotic Inflation
arXiv:1008.4457 [astro-ph]

IPMU10-0189
Kazunori Nakayama, Fuminobu Takahashi, Tsutomu T
Yanagida
A theory of extra radiation in the Universe

IPMU Annual Report 2010

113

IPMU10-0203
Takeshi Kobayashi and Fuminobu Takahashi
Running Spectral Index from Inflation with
Modulations
arXiv:1011.3988 [astro-ph]

IPMU10-0191
Junji Hisano and Shohei Sugiyama
Charge-breaking constraints on left-right mixing ofstau’sPhys. Lett. B 696,92, date of acceptance 2010.12.08,
arXiv:1011.0260 [hep-ph]

IPMU10-0204
S. Das et al. (including Y.-T. Lin)
Atacama Cosmology Telescope: A Measurement of theCosmic Microwave Background
Power Spectrum at 148 and 218 GHz from the 2008
Southern Survey
Astrophys. J., arXiv:1009.0847 [astro-ph]

IPMU10-0192
Eita Nakamura and Satoshi Shirai
Discovery Potential for Low-Scale Gauge Mediation at
Early LHCIPMU10-0193
Jeremiah Heller and Mircea Voineagu
Equivariant Semi-topological invariants, Atiyah’s KRtheory and Real Algebraic Cycles
Trans. AMS, arXiv:arXiv: 1008.3685 [math]
IPMU10-0194
Jeremiah Heller and Mircea Voineagu
Vanishing theorems for real algebraic cycles
Amer. J. Math. 2010, date of acceptance 2010.10.01,
arXiv:arXiv:0909.0569 [math]
IPMU10-0195
Domenico Orlando, Susanne Reffert, Linda I. Uruchurtu
Classical Integrability of the Squashed Threesphere,
Warped AdS3 and Schroedinger Spacetime via
T-Duality
arXiv:1011.1771 [hep-th]
IPMU10-0196
Kawara, K., Hirashita, H., Nozawa, T., Kozasa, T., Oyabu,
S., Matsuoka, Y., Shimizu, T., Sameshima, H., Ienaka, N.
Supernova dust for the extinction law in a young
infrared galaxy at z=1
MNRAS, arXiv:1011.0511 [astro-ph]
IPMU10-0197
M. Adeel Ajaib, Tong Li, Qaisar Shafi and Kai Wang
Searching bino-gluino coannihilation at theearly LHC
arXiv:1011.5518 [hep-ph]
IPMU10-0198
Richard Eager
Equivalence of A-Maximization and Volume
Minimization
arXiv:1011.1809 [hep-th]
IPMU10-0199
Yi-Fu Cai, James B. Dent, Damien A. Easson
Warm DBI Inflation
IPMU10-0200
Sergey Galkin, Vasily Golyshev, Hiroshi Iritani
The Apery class and the Gamma class
IPMU10-0201
Hirosi Ooguri and Chang-Soon Park
Spatially Modulated Phase in Holographic QuarkGluon Plasma
IPMU10-0202
Davide Gaiotto, Nathan Seiberg, and Yuji Tachikawa
Comments on scaling limits of 4d N = 2 theories

114

IPMU Annual Report 2010

IPMU10-0205
T. Marriage et al. (including Y.-T. Lin)
Atacama Cosmology Telescope: Extragalactic Sources
at 148 GHz in the 2008 Survey
Astrophys. J., arXiv:1007.5256 [astro-ph]
IPMU10-0206
A. Hajian et al. (including Y.-T. Lin)
Atacama Cosmology Telescope: Calibration with
WMAP using Cross-Correlations
Astrophys. J., arXiv:1009.0777 [astro-ph]
IPMU10-0207
J. Dunkley et al. (including Y.-T. Lin)
Atacama Cosmology Telescope: CosmologicalParameters from the 2008 Power Spectrum
Astrophys. J., arXiv:1009.0866 [astro-ph]
IPMU10-0208
N. Sehgal et al. (including Y.-T. Lin)
Atacama Cosmology Telescope: Cosmology from
Galaxy Clusters detected via the Sunyaev- Zel’dovich
EffectAstrophys. J., arXiv:1010.1025 [astro-ph]

IPMU10-0214
Satoshi Kondo and Seidai Yasuda
Zeta elements in the K-theory of Drinfeld modular
varieties
IPMU10-0215
Charles L. Steinhardt, Martin Elvis
Comment on Biases in the Quasar MassLuminosity Plane
IPMU10-0216
Hitoshi Murayama, Vikram Rentala, Jing Shu and Tsutomu
T. Yanagida
Saving fourth generation and baryon number by living
longPhys. Rev. Lett.
IPMU10-0217
Domenico Orlando and Susanne Reffert
The Gauge-Bethe Correspondence and GeometricRepresentation Theory
IPMU10-0218
Jason Evans, Matthew Sudano, Tsutomu Yanagida
Higgs Messengers
JHEP
IPMU10-0219
Valeri P. Frolov and Shinji Mukohyama
Brane HolesarXiv:1012.4541 [hep-th]
IPMU10-0220
Fuminobu Takahashi and Tsutomu T. Yanagida
Strong dynamics at the Planck scale as a solution to thecosmological moduli problem
JHEP, arXiv:1012.3227 [hep-ph]

IPMU10-0209
T. Marriage et al. (including Y.-T. Lin)
Atacama Cosmology Telescope: Sunyaev- Zel’dovich
Selected Galaxy Clusters at 148 GHz in the 2008 Survey
Astrophys. J., arXiv:1010.1065 [astro-ph]

IPMU10-0221
Takeshi Hiramatsu, Masahiro Kawasaki and Ken’ichi
Saikawa
Evolution of String-Wall Network and Axionic Domain
Wall Problem
JCAP

IPMU10-0210
M. White et al. (including Y.-T. Lin)
The Clustering of Massive Galaxies at z~0.5 from theFirst Semester of BOSS Data
Astrophys. J., arXiv:1010.4915 [astro-ph]

IPMU10-0222
Masahiro Ibe, Ryosuke Sato, Tsutomu T. Yanagida andKazuya YonekuraGravitino Dark Matter and Light Gluino in an
R-invariant Low Scale Gauge Mediation

IPMU10-0211
Emille E. O. Ishida, Rafael S. de Souza
Hubble parameter reconstruction from PCA:
minimizing the bias
A&A DOI: 10.1051/0004-6361/201015281 , date ofacceptance2010.11.08, arXiv:1012.5335 [astro-ph]

IPMU10-0223
A. Comastri, P. Ranalli, K. Iwasawa, C. Vignali, R. Gilli,
I. Georgantopoulos, X. Barcons, W.N. Brandt, H. Brunner,
M. Brusa, N. Cappelluti, F.J. Carrera, F. Civano, F. Fiore,
G. Hasinger, V. Mainieri, A. Merloni, M. Paolillo, S.
Puccetti, P. Rosati, J.D. Silverman, P. Tozzi, G. Zamorani, I.
Balestra, F.E. Bauer, B. Luo, Y.Q. Xue
The XMM Deep survey in the CDFS I. First results onheavily obscured AGN
A&A, arXiv:1012.4011v1 [astro-ph]

IPMU10-0212
Rafael S. de Souza, Luiz F. S. Rodrigues, Emille E. O.
Ishida, Reuven Opher
The Effect of a Single Supernova Explosion on the
Cuspy Density Profile of a Small-Mass Dark Matter
Halo
MNRAS
IPMU10-0213
Richard Eager, Michael Gary and Matthew M. Roberts
Can you hear the shape of dual geometries?
arXiv:1011.5231 [hep-th]

IPMU10-0224
S. de la Torre, L. Guzzo, K. Kovač, C. Porciani, U. Abbas,
B. Meneux, C.M. Carollo, T. Contini, J.P. Kneib, O L´evre,
and 52 coauthors (including John ilverman)
Understanding the shape of the galaxy twopoint
correlation function at z = 1 in the COSMOS fieldA&A 409, 867 (2010), date of acceptance 2010.07.12,
arXiv:1007.1984v1 [astro-ph]

IPMU10-0225
M. Bolzonella, K. Kovač, L. Pozzetti, E. Zucca, O.
Cucciati, S.J. Lilly, Y. Peng, A. Iovino, G. Zamorani, D.
Vergani, and 56 coauthors (including John Silverman)
Tracking the impact of environment on the galaxy
stellar mass function up to z similar to 1 in the 10 kzCOSMOS sample
A&A 524, 76 (2010), date of acceptance 2010.09.21,
arXiv:0907.0013 [astro-ph]
IPMU10-0226
M. Moresco, L. Pozzetti, A. Cimatti, G. Zamorani, M.
Mignoli, S. di Cesare, M. Bolzonella, E. Zucca, S. Lilly, K.
Kovač, and 51 coauthors (including John Silverman)zCOSMOS 10k-bright spectroscopic sample . Exploring
mass and environment dependence in early-typegalaxies
A&A 524, 67 (2010), date of acceptance 2010.09.08,
arXiv:1009.3376 [astro-ph]
IPMU10-0227
Junji Hisano, Koji Ishiwata, Natsumi Nagata, and Masato
Yamanaka
Direct detection of vector dark matter
JHEP, arXiv:1012.5455 [hep-ph]
IPMU10-0228
Motoi Endo and Norimi Yokozaki
Large CP Violation in BS Meson Mixing with EDM
constraint in Supersymmetry
IPMU10-0229
Takashi Hiramatsu, Masahiro Kawasaki, Toyokazu
Sekiguchi, Masahide Yamaguchi and Jun’ichi Yokoyama
Improved estimation of radiated axions fromcosmological axionic strings
JCAP
IPMU10-0230
Simeon Hellerman and Eric Sharpe
Sums over Topological Sectors and Quantization of
Fayet-Iliopoulos Parameters
IPMU10-0231
Yoshio Kikukawa and Kouta Usui
Reflection Positivity of N=1 Wess-Zumino model on thelattice with exact U(1) R symmetry
IPMU10-0232
Yoshio Kikukawa and Kouta Usui
Direct Proof of Reflection Positivity of Free Overlap
Dirac Fermion
IPMU10-0233
Mihoko M. Nojiri and Jing Shu
Two jets and missing ET signature to determine thespins of the new particles in early stage of the discovery
IPMU11-0001
Fuminobu Takahashi and Tsutomu T. Yanagida
Why have supersymmetric particles not been observed?
IPMU11-0002
Cosimo Bambi
Spinning super-massive objects in galactic nuclei up toa﹡ > 1Preprints

IPMU10-0190
Yoonbai Kim and Seong Chan Park
Inflation with non-minimal coupling and compact
hyperbolic extra dimensions
JHEP

IPMU11-0003
Ryoichi Nishio and Taizan Watari
High-Energy Photon-Hadron Scattering in Holographic
QCD

IPMU Annual Report 2010115

IPMU11-0004
Tsz Yan Lam, Takahiro Nishimichi and Naoki Yoshida
The pairwise velocity probability density function inmodels with local primordial non- Gaussianity

IPMU11-0016
H. Kawahara, H. Yoshitake, T. Nishimichi and T.Sousbie
Suzaku Observation of a New Merging Group of
Galaxies at a Filamentary Junction

IPMU11-0029
Kyoji Saito
Coxeter Elements of Vanishing Cycles of Types A 12 ∞and D 12 ∞IPMU11-0043
A. Ibarra, E. Molinaro and S.T. Petcov
Low Energy Signatures of the TeV Scale See-Saw
Mechanism

IPMU11-0005
K. Maeda, G. Leloudas, S. Taubenberger, M.
Stritzinger, J. Sollerman, N. Elias-Rosa, S. Benetti, M.
Hamuy, G. Folatelli, P. A. Mazzali
Effects of Explosion Asymmetry and Viewing Angle
on the Type Ia Supernova Color and Luminosity
Calibration

IPMU11-0017
P. Valageas and T. Nishimichi
Combining perturbation theories with halo models forthe matter bispectrum

IPMU11-0030
Edmond Berger, Qing-Hong Cao, Chuan-Ren Chen and
Hao Zhang
Top Quark Polarization As A Probe of Models with
Extra Gauge Bosons

IPMU11-0044
Johanna Knapp, Maximilian Kreuzer
Toric Methods in F-theory Model Building

IPMU11-0007
M. Kawasaki, M. Kusakabe
Destruction of 7Be in big bang nucleosynthesis via longlived sub-strongly interacting massive particles as asolution to the Li problem
IPMU11-0008
Edmond Berger, Qing-Hong Cao, Chuan-Ren Chen,
Chong-Sheng Li, Hao Zhang
Top Quark Forward-Backward Asymmetry and SameSign Top Quark Pairs
IPMU11-0009
Koji Ishiwata, Shigeki Matsumoto, Takeo Moroi
Decaying Dark Matter in Supersymmetric Model andCosmic-Ray Observations
IPMU11-0010
Naoyuki Haba, Yuji Kajiyama, Shigeki Matsumoto,
Hiroshi Okada, Koichi Yoshioka
Universally Leptophilic Dark Matter From NonAbelian Discrete Symmetry
IPMU11-0011 Naoyuki Haba, Shigeki Matsumoto,
Rhosuke Sato
Sneutrino Inflation with Asymmetric Dark
Matter
IPMU11-0012
Masaki Asano, Keisuke Fujii, R. S. Hundi, Hideo Itoh,
Shigeki Matsumoto, Nobuchika Okada, Tomoyuki Saito,
Taikan Suehara, Yosuke Takubo, Hitoshi Yamamoto
Discrimination of New Physics Models with theInternational Linear Collider
IPMU11-0013
Cosimo Bambi
Constraint on the quadrupole moment of supermassive
black hole candidates from the estimate of the mean
radiative efficiency of AGN
IPMU11-0014
Yuji Tachikawa
On W-algebras and the symmetries of defects of 6d
N=(2,0) theory
IPMU11-0015
Junji Hisano, Masahiro Kawasaki, Kazunori Kohri, Takeo
Moroi, Kazunori Nakayama, and Toyokazu Sekiguchi
Cosmological constraints on dark matter models withvelocity-dependent annihilation cross section

IPMU11-0031
Shinya Kanemura, Shigeki Matsumoto, Takehiro
Nabeshima, and Hiroyuki
Testing Higgs portal dark matter via Z fusion at alinear collider

IPMU11-0019
Jiayu Tang, Issha Kayo, Masahiro Takada
Likelihood reconstruction method of real-space densityand velocity power spectra from a redshift galaxy
surveyIPMU11-0032
Masahiro Kawasaki, Ken’ichi Saikawa
Study of gravitational radiation from cosmic domain
walls

IPMU11-0020
Kazunori Nakayama, Fuminobu Takahashi, Tsutomu T.
Yanagida
Number-Theory Dark Matter

IPMU11-0033
Shoji Asai, Yuya Azuma, Motoi Endo, Koichi Hamaguchi,
Sho Iwamoto
Stau Kinks at the LHC

IPMU11-0021
Izawa K.-I., Yuichiro Nakai, Takashi Shimomura
Higgs Portal to Visible Supersymmetry Breaking

IPMU11-0034
Satoshi Kondo, Seidai Yasuda
On the first and second K-groups of an elliptic curve
over a global field of positive characteristic

IPMU11-0022
T. Kohno and A. Pajitnov
Circle-valued Morse theory for complex hyperplanearrangements
IPMU11-0023
Amir Hajian et al (including Y.-T. Lin)
Correlations in the (Sub)millimeter background fromACTxBLAST
IPMU11-0024
Nick Hand et al (including Y.-T. Lin)
The Atacama Cosmology Telescope: Detection ofSunyaev-Zel’dovich Decrement in Groups and Clusters
Associated with Luminous Red Galaxies
IPMU11-0025
D. Eisenstein et al (including H. Aihara, N. Yasuda, Y.-T.
Lin, M. Tanaka)
SDSS-III: Massive Spectroscopic Surveys of the Distant
Universe, the Milky Way Galaxy, and Extra-Solar
Planetary Systems
IPMU11-0026
H. Aihara et al (including N. Yasuda, Y.-T. Lin, M. Tanaka)
The Eighth Data Release of the Sloan Digital Sky
Survey: First Data from SDSS-III
IPMU11-0027
Warren Essey, Oleg Kalashev, Alexander Kusenko, John F.
BeacomRole of line-of-sight cosmic ray interactions in forming
the spectra of distant blazars in TeV gamma rays andhigh-energy neutrinos
IPMU11-0028
Alexander Kusenko
Ultrahigh-energy nuclei, photons, and magnetic fields

IPMU11-0035
N. Tominaga, T. Morokuma, S.I. Blinnikov, P. Baklanov,E.I. Sorokina, K. Nomoto
Shock Breakout in Type II Plateau Supernovae:
Prospects for High Redshift Supernova Surveys
IPMU11-0036
H. Uchida, H. Tsunemi, N. Tominaga, S. Katsuda, M.
Kimura, H. Kosugi, H. Takahashi, S. TakakuraFirst Detection of Ar-K Line Emission from the Cygnus
Loop
IPMU11-0037
Cosimo Bambi
On the effect of higher order multipole moments on theestimate of the quadrupole of astrophysical black holecandidates
IPMU11-0038
Masahiro Kawasaki, Toyokazu Sekiguchi, Tomo Takahashi
Differentiating CDM and Baryon Isocurvature Models
with 21 cm Fluctuations

IPMU11-0045
Charles L. Steinhardt
Effects of Biases in Virial Mass Estimation on Cosmic
Synchronization of Quasar Accretion
IPMU11-0046
Junji Hisano, Koji Ishiwata, Natsumi Nagata, andTomohiro Takesako
Direct Detection of ElectroWeak-Interacting Massive
Particles in the Universe
IPMU11-0047
H.-J. Seo, M. Sato, S. Dodelson, B. Jain, M. Takada
Re-capturing Cosmic Information
IPMU11-0048
Jason L. Evans, Masahiro Ibe, Matthew Sudano, Tsutomu T.
Yanagida
Simplified R-Symmetry Breaking and LowScale Gauge Mediation
IPMU11-0049
Cosimo Bambi
Evolution of the spin parameter of accreting compact
objects with non-Kerr quadrupole moment
IPMU11-0050
Jing Shu, Kai Wang, Guohuai Zhu
A revisit to top quark forward-backward asymmetry
IPMU11-0051
Takumi Ito, Kouhei Nakaji, Satoshi Shirai
Identifying the Origin of Longevity of Long- Lived Stauat the LHC
IPMU11-0052
K. Abazajian et al. (including M. Takada)
Cosmological and Astrophysical Neutrino Mass
Measurements
IPMU11-0053
Shinsei Ryu, Tadashi Takayanagi, Tomonori Ugajin
Holographic Conductivity in Disordered Systems

IPMU11-0039
Chiaki Kobayashi & Naohito Nakasato
Chemodynamical Simulations of the MilkyWay Galaxy
IPMU11-0040
Chiaki Kobayashi, Nozomu Tominaga, & Keni’chi Nomoto
Chemical Enrichment in the Carbon-enhanced
Damped Lyα System by Population III Supernovae
IPMU11-0041
Chiaki Kobayashi, Amanda Karakas, & Hideyuki Umeda
The Evolution of Isotope Ratios in the Milky Way
GalaxyPreprints

IPMU11-0006
Johanna Knapp, Maximilian Kreuzer, Christoph
Mayrhofer, Nils-Ole Walliser
Toric Construction of Global F-Theory GUTs

IPMU11-0018
A. Taruya, S. Saito and T. Nishimichi
Forecasting the Cosmological Constraints with
Anisotropic Baryon Acoustic Oscillations from
Multipole Expansion

IPMU11-0042
Amand Faessler, A. Meroni, S.T. Petcov, F. Simkovic and J.
Vergados
Uncovering Multiple CP-Nonconserving Mechanisms of
bb0nu-Decay

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14 Outreach and Public Communications

Public Lectures• The creation and history of the universe
George Smoot (2006 Nobel laureate in physics), April 3, Yayoi Hall.

We continue to convey the importance and excitement of our research activities to general publicthrough public lectures and a variety of outreachprograms. For the public lectures, we have established a tradition of having enough time for discussion after each lecture so that the audience candirectly ask questions to the speaker. We organizedfifteen public lectures in this period.

• Miraculous string theory—towards the final theory of matter
Shigeki Sugimoto, April 17, The 3rd Joint ICRR-IPMU Public Lecture.

Attracting young people into science is an importantpart of our outreach programs. We organized, as apart of UT Science Faculty project, a special event
for motivating the scientific mind of female juniorhigh school and high school students. Optionally,
their parents were also allowed to participate because we think the mindsetting of the parents plays
an important role in this effort.

• Final theory of elementary particles
Hirosi Ooguri, September 12, Science cafe in Nagoya.

• Mystery of dark energy that fills the universe
Hiroshi Karoji, June 26, Nayoro, Hokkaido.

George Smoot of UC Berkeley, Nobel laureate of 2006, talks
about Creation and History of the Universe with the help of
Naoshi Sugiyama’s translation.

• Galaxies living in the universe
Masayuki Tanaka, October 29, Kashiwa Open Campus Day.
• Evolution of the universe explored by supernovae
Ken’ichi Nomoto, October 30, Kashiwa Open Campus Day.
• Gravitational lensing
Masahiro Takada, November 11, Chienkan High School, Saga.
• Dark-matter dominated universe
Naoki Yoshida, November 12, Science cafe in Kogakuin University.

Shinji Mukohyama answers questions after the public lectureon the Universe Beyond the Four Dimensions.

We actively participated in various events within
our capacity for the promotion of science in generaland IPMU’s activity. Good communication withthe local community as well as within the institute helps quality of life, especially for those fromabroad, which reflect to their research output. We
have valuable support from “IPMU Volunteers.”
Daily teatime is not just for science talks, but occasionally, for happy gatherings.

• The universe beyond the four dimensions
Shinji Mukohyama, November 14, The 4th ICRR-IPMU Public Lecture.
• Einstein’s dream—mystery of gravity and string theory—
Shigeki Sugimoto, December 10, Science cafe in Kogakuin University.
• Birth of stars, galaxies and black holes
Naoki Yoshida, January 22, Suwa-Seiryo High School, Nagano.
Outreach and Public Communications

We published four more editions of IPMU NEWSin this period, covering a wide range of information
including conferences and seminars, research highlights and newly arrived members. They also feature interesting topics in other research fields. We
broadcasted six more “Ask a Scientist” video clips
on the website, in which IPMU scientists explain
technical terms to general public in just one minute.

• Relativity, elementary particles and cosmology
Naoki Yoshida, June 26, Kawagoe High School.

• Dark universe and luminous stars
Naoki Yoshida, February 9, Roppongi Astronomy Club.
• What is the universe made of?
Hitoshi Murayama, March 9, TODIAS Inauguration Public Lecture, Yasuda Hall.
Female students from junior high-school and senior high-school
are trying to have good feel about the scale of the universe.

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IPMU Annual Report 2010

• The frontiers of fundamental physics
David Gross (2004 Nobel Laureate in physics), March 9, TODIAS Inauguration Public Lecture,
Yasuda Hall.

IPMU Annual Report 2010119Video Clips

IPMU NEWS120

IPMU Annual Report 2010

IPMU joined other WPI centers at the Science Festa that took
place in Kyoto. [June 2010]

IPMU NEWS hosted a round table discussion by foreign
researchers on “life in Japan, life at IPMU.” [June 2010]

Midori Ozawa of International Relations section presented“Dealing with Foreign Scientists” during the Open Campus Day.
[October 2010]

Members of Japanese class play a well-known Japanese fairly
tales “Momotaro” during the Open Campus Day. [October 2010]

Murayama hosted a teatime for IPMU-volunteer members.
[October 2010]

Marriage of Liqin and Minxin was celebrated during a daily
teatime with special home-made cakes. [December 2010]

IPMU Annual Report 2010

Outreach and Public Communications• Hadrons and String Theory by Shigeki Sugimoto in April• Super-massive Black Hole by John Silvermann in September• Supersymmetry by Kai Wang in November• Cosmology by Shinji Mukohyama in December• Holographic Principle by Tadashi Takayanagi in January• Baryon Acoustic Oscillation by Yen-Ting Lin in February

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April 2010 –March 2011

Annual Report 2010

IPMU

ANNUAL REPORT 2010

April 2010 – March 2011

Institute for the Physics and Mathematics of the Universe (IPMU)
Todai Institutes for Advanced Study
The University of Tokyo
5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan TEL: +81-4-7136-4940 FAX: +81-4-7136-4941 http://www.ipmu.jp/

World Premier International
Research Center Initiative

Todai Institutes for Advanced Study