News

Toshiyuki Kobayashi Awarded theMedal with Purple Ribbon

On April 28,
2014, the Japanese
government
announced thisspringʼs recipients of
the Medal of Honor.
Toshiyuki Kobayashi
Toshiyuki Kobayashi,
Professor at the Graduate School ofMathematical Sciences, the Universityof Tokyo, and Principal Investigatorat the Kavli IPMU, was selected as arecipient of the Medal with Purple
Ribbon in the field of mathematics.
The Medal with Purple Ribbon isawarded to people who have madeoutstanding contributions in academic
fields, the arts, and sports.
Professor Kobayashiʼs research
is magnificent in scope, ranging
from algebra to geometry andanalysis, with a key word ofsymmetry, and his achievements
are influential in the whole areaof mathematics. In particular, thefollowing achievements received
high recognition internationally andrealized essential breakthroughs
in mathematics: (1) Pioneering thetheory of discontinuous groups
for homogeneous spaces beyond
Riemannian geometry ;(2) Substantial breakthrough inthe theory of branching laws of
infinite-dimensional representations,

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particularly, creating the theoryof discretely decomposable
restrictions ; (3) Pioneering workon the global analysis arising fromminimal representations ; (4) Original
theory of visible action on complex
manifolds towards a unified theoryof multiplicity-free representations.

submission deadline approaching
about a half month ahead of the
proposal for a five-year extension of
the WPI funding after the initial ten
years of support , the Committee gave
many valuable suggestions for thecontent of the proposal and related
issues.

Hirosi Ooguri Appointed as theFounding Director of the Burke
Institute

Kavli IPMU Established an
Endowed Research Unit

On May 14, 2014, the California
Institute of Technology announced
the establishment of the Walter
Burke Institute for Theoretical Physics(Burke Institute) with Hirosi Ooguri
as its Founding Director . Ooguri has
been Principal Investigator at the Kavli
IPMU since October, 2007. The Burke
Institute has been established witha $75 million endowment, gifted by
the Sherman Fairchild Foundation,
where Walter Burke served for 35
years as president, and by otherfunders, aiming to promote research,and to nurture the next generation, intheoretical physics.
7th Meeting of the Kavli IPMU
External Advisory Committee

On June 30, 2014, the seventhmeeting of the Kavli IPMU External
Advisory Committee was held withthe attendance of all the committee
members . This time, with theCommittee members: far side, from left to right, Nigel
Smith (SNOLAB), Steve Kahn (Chair, Stanford Univ./
SLAC), John Ellis (Kingʼs College London), Young-Kee
Kim (Chicago Univ.), Sadanoti Okamura (Hosei Univ.),
David Morrison (UC Santa Barbara), and Sadayoshi
Kojima (Tokyo Tech)

Kavli IPMU News No. 26 June 2014

On April 1, 2014, the Kavli IPMU,
Todai Institutes for Advanced
Study, the University of Tokyo, andHamamatsu Photonics K.K. establishedthe Endowed Research Unit: Darkside of the Universe. This is thefirst endowed research unit for thefield of fundamental science, suchas elementary particle physics andcosmology, in the University of Tokyo.
Kavli IPMU Professor Kenʼichi
Nomoto, who is famous internationallyfor his achievements in the researchof supernovae and is a recipient of aJapan Academy award, assumed thepost of Hamamatsu Professor in theunit. He leads diverse research projects
related to dark energy, dark matter,and supernovae.
Quimbyʼs Team Found a Lens
Galaxy Magnifying a Type Ia
Supernova

A supernova is a tremendously
luminous object caused by a stellar
explosion. Among various types ofsupernovae, those classified as typeIa (SNIa) have strikingly similar peakluminosities, and this property allows
astronomers to use SNIa as standard
candles to measure cosmologicaldistance. However, PS1-10afx, asupernova observed at a distance ofabout 9 billion light years from the
Earth was much more luminous than
the normal SNIa , though it showed
other properties almost identicalto those of SNIa. So, this was a big
puzzle.
Last year, as reported in the June2013 issue of the Kavli IPMU News
(see No. 22, page 33), a team ofresearchers at the Kavli IPMU including
Robert Quimby and Marcus Wernerpublished the argument that PS110afx is a type Ia supernova 30 times
magnified by a strong gravitationallens effect due to a massive galaxy(lens galaxy) existing in front of thePS1-10afx; the lens galaxy warps
space-time to form magnified imagesof the supernova.
A question remained as where
the lens galaxy is located, however,
because, observed from the Earth,
the lens galaxy overlaps with thehost galaxy wherein the supernova
appeared; the existing data do notallow us to separate the signal of theforeground lens galaxy from that of
the host galaxy.
In September 2013, when thePS1-10afx sufficiently faded away,
Quimby's team successfully extracted
the light signal of the foregroundgalaxy in the glare of the relatively
bright host galaxy , using the LowResolution Imaging Spectrographon the Keck-I telescope located in
Hawaii. This result confirmed theexistence of the lens galaxy, whichcauses the lensing, between the hostgalaxy and us. The team reported thisresult in Science, a famous academic
journal published by the American
Association for the Advancement of
Science (AAAS), on April 25, 2014. At

Press conference at the Sanjo Conference Hall

the same time, Quimbyʼs team held apress conference at the University ofTokyoʼs Sanjo Conference Hall on the
Hongo campus. The AAAS/Scienceside moderated the conference. The
news was covered widely in the media
internationally.
Freeman Dyson Visited Kavli IPMU

On April 15-19, 2014, Freeman
Dyson visited the Kavli IPMU. He is
a Professor Emeritus of the Institutefor Advanced Study, famous for his
outstanding achievements in various
scientific fields, in particular, quantum
electrodynamics. He is just over 90
years of age, and he is still actively
engaged in science. Then, he visitedthe Kamioka Observatory of theInstitute for Cosmic Ray Research / theKamioka Branch of the Kavli IPMU on
April 21-22 , and in particular, SuperKamiokande and other undergroundexperiments.
In this issue of the Kavli IPMU News,
you can find an interview (including
a summary of the Q&A session) withhim by Kavli IPMU Professor Masataka
Fukugita, see pp. 22 - 30.

near the JR Kashiwa station.
The first lecture was given by
Toshitake Kohno, Professor at theGraduate School of Mathematical
Sciences, the University of Tokyo andKavli IPMU Principal Investigator,on The Shape of the Universe ~Mathematical Challenges. He talked
about proposing models of the
shape of the Universe, which arein agreement with the observationaldata, using mathematics. Next, ViceDirector of ICRR, Professor Toshio
Terasawa, gave a talk entitled
Shocking Universe ~ Universe Is Fullof Shock Waves. He talked about
the roles which strong shock waves,produced by explosive phenomenain the Universe, such as solar flares,
supernovae, gamma-ray bursts, etc.,
play in the Universe.

Toshitake Kohno giving a lecture

Evening of Art and Live Music in
Piazza Fujiwara

Freeman Dyson giving a lecture

10th ICRR-Kavli IPMU Joint Public
Lecture Decoding the Mystery of
the Universe

On April 12, 2014, the 10th ICRR(Institute for Cosmic Ray Research, The
University of Tokyo)-Kavli IPMU joint
public lecture, entitled Decoding the
Mystery of the Universe, was heldat Amuser Kashiwa, which is locatedOn April 25, two social groups of
Kavli IPMU researchers and staff, the
IPMU Chamber Orchestra and the Arts
Society for the first time cohosted the
IPMUsic+arts night. On the 3rd floorof the Kavli IPMU Building, in frontof the wall of the Piazza Fujiwara,
on which 35 pictures contributed
from Kavli IPMN researchers and staff
with the theme, Repetition, Scale,
Duration were exhibited, as many as
10 programs of musical performance,
including the IPMU Chamber
Orchestraʼs performance, and piano

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News

solo, koto (traditional Japanese
stringed musical instrument), karaoke,and singing and playing guitar, were
presented by researchers and staff for
3 hours including a break. In Piazza
Fujiwara, a great many researchers,
staff, and their families and friends
gathered, and they enjoyed the
IPMUsic+arts night, with wine andsnacks contributed by Administrative
Director Haruyama and others. There
were many vivid conversations among
the participants, irrespective of theirpositions, nationalities, and research
fields, on, for instance, art, and musicskills that are unexpected from theireveryday life.

IPMUsic+arts night in Piazza Fujiwara

Kavli IPMU Seminars

1.

Naturalness, Conformal
Symmetry and Duality
Speaker: Yoshiharu Kawamura(Shinshu U)
Date: Nov 06, 2013
2. The SIMP Miracle
Speaker: Jacob Wacker (SLAC)
Date: Apr 01, 2014
3. A working Verlinde Formula for
logarithmic CFT
Speaker: Simon Wood (Australian
National U)
Date: Apr 01, 2014
4. The Search For New Physics inthe LHC Age: Implications of the
LHC and the Prospects for the
FutureSpeaker: Jacob Wacker (SLAC)
Date: Apr 01, 201436

5.

Higher-order QCD effects in
Higgs boson production
Speaker: Bryan Webber (UCambridge)
Date: Apr 02, 2014
6. Interdisciplinarity and theinterplay between mathematics
and physics
Speaker: Peter Goddard (IAS)
Date: Apr 02, 2014
7. The Dark Side of Galaxy
Evolution
Speaker: Andrew Hearin (Fermilab)
Date: Apr 03, 2014
8. Response theory of relativistic
quantum Hall: A new topologicalcurrent
Speaker: Matthew Roberts (UChicago)Date: Apr 08, 2014
9. Formulation of effective theories
for dark matter direct detection
Speaker: Natsumi Nagata (Kavli
IPMU)
Date: Apr 09, 2014
10. 3D Mapping of the IGM on∼Mpc scales with Ly-α forest
Tomography
Speaker: Khee-Gan Lee (MPIA)
Date: Apr 10, 2014
11. Stability conditions for an
N-Calabi-Yau algebra of the Anquiver
Speaker: Akishi Ikeda (U Tokyo)
Date: Apr 14, 201412. BICEP2 results, implications, andfutureSpeaker: Chao-Lin Kuo (Stanford
U/SLAC)
Date: Apr 14, 2014
13. Cylinders in smooth del Pezzo
surfaces
Speaker: Jihun Park (Postech)
Date: Apr 15, 2014
14. S-duality of nonsupersymmetricgauge theories
Speaker: Anson Hook (IAS)
Date: Apr 15, 2014

Kavli IPMU News No. 26 June 2014

15. Decay of charged Higgs bosons
into charm and bottom quarks inmulti-Higgs doublet models
Speaker: Andrew Gerard Akeroyd(U Southanpton)
Date: Apr 16, 2014
16. Can a Single Graviton be
Observed?
Speaker: Freeman Dyson (IAS)
Date: Apr 16, 2014
17. Cylinders in singular del Pezzo
surfaces
Speaker: Ivan Cheltsov (UEdinburgh)
Date: Apr 17, 2014
18. Q&A with Freeman Dyson
Speaker: Freeman Dyson (IAS)
Date: Apr 17, 201419. Seiberg-Witten invariants ofsmooth 4-manifolds
Speaker: Tirasan Khandhawit(Kavli IPMU)
Date: Apr 17, 2014
20. Recent advances in dS/CFT
Speaker: Edgar Shaghoulian(Stanford U)
Date: Apr 22, 2014
21. Cosmology with clusters, voids
and their profiles
Speaker: Ravi Sheth (ICTP)
Date: Apr 24, 2014
22. Alpha-prime adventures
Speaker: Ruben Minasian (CEA
Saclay)Date: Apr 24, 201423. Some recent results on massive
gravity
Speaker: Cedric Deffayet (IAP)
Date: Apr 25, 2014
24. Warped entanglement entropy
Speaker: Edgar Shaghoulian(Stanford U.)
Date: Apr 28, 2014
25. Multicomponent scenario of
WIMP dark matter in the radiative
seesaw models
Speaker: Hiroshi Takano (Kavli
IPMU)

Date: Apr 30, 2014
26. Complementarity of weaklensing, galaxy clustering and CMB
data: constraints on neutrinos,
dark energy and gravity
Speaker: Roland de Putter (JPL)
Date: May 01, 201427. Precision of Standard Modelparameters and Higgs properties
Speaker: Bryan Webber (UCambridge)
Date: May 07, 2014
28. Improved distance measurementswith reconstructed WiggleZ
Speaker: Eyal Kazin (Swinburne U
of Technology)
Date: May 08, 201429. Homological mirror symmetry forthe genus 2 curve
Speaker: Daniel Pomerleano (Kavli
IPMU)
Date: May 08, 2014
30. General instanton counting and5d/6d SCFT
Speaker: Seok Kim (Seoul National U)
Date: May 13, 2014
31. Relative BPS state counts for toric
Del Pezzo surfaces and log mirror
symmetry
Speaker: Michel van Garrel (KIAS)
Date: May 14, 201432. Simulations of SNe Ib/c Shock
Breakouts using multigroupradiation hydrodynamics
Speaker: Alexey Tolstov (Kavli
IPMU)
Date: May 15, 2014
33. Effective Temperature of Nonequilibrium Steady States in AdS/
CFT
Speaker: Shin Nakamura (Chuo U)
Date: May 20, 201434. Evolution of dust size distribution
and extinction curves in galaxies
Speaker: Takaya Nozawa (NAOJ)
Date: May 21, 2014
35. Known and unknown Zeldovich:simplest paths to complexity- from flames to Large Scale
Structure
Speaker: Sergei Blinnikov (ITEP)
Date: May 22, 2014
36. On equivariant Pieri rule ofisotropic Grassmannians
Speaker: Changzheng Li (Kavli
IPMU)
Date: May 22, 2014
37. Muon and neutral hadrondetection in high energy physics
Speaker: Eiichi Nakano (Osaka
City U)
Date: May 28, 2014
38. Unusually Bright Supernovae
Speaker: Robert Quimby (Kavli
IPMU)
Date: May 29, 201439. Statistical properties ofdeterministic systems byelementary means
Speaker: Boris Hasselblatt (Tufts U)
Date: Jun 03, 2014
40. Axion cosmology with high scale
inflation
Speaker: Kazunori Nakayama (UTokyo)
Date: Jun 04, 2014
41. Counting curves in terms ofmodular forms
Speaker: Jie Zhou (Harvard U)
Date: Jun 04, 2014
42. On some strange dynamicalsystems in the real plane
Speaker: Sergei Duzhin (Steklov
Inst of Mathematics)
Date: Jun 05, 2014
43. CMB B-mode polarization
experiments: Recent results from
POLARBEAR (and BICEP2)
Speaker: Haruki Nishino (Kavli
IPMU)
Date: Jun 05, 2014
44. Trees and an Affine Cover of \bar{\mathcal{M}}_{0,n+1}
Speaker: Charles Siegel (Kavli
IPMU)
Date: Jun 05, 2014

45. Flag Varieties and Quantum
Cohomology, H. Schubert, A.
Grothendieck and C. Dunkl
Speaker: Anatol Kirillov (RIMS &Kavli IPMU)
Date: Jun 09, 2014
Personnel Changes

Reappointment
Exploiting a jointappointment systemthat had been
approved in the
University of Tokyo in
Naoki Yoshida
FY2012 , Naoki
Yoshida, Professor at the Departmentof Physics, School of Science wasreappointed as a Kavli IPMU Professor
on April 1, 2014, with 40% of histime allocated for working at the Kavli
IPMU. Previously, he was a Kavli IPMU
Associate Professor from September
1, 2008 to March 31, 2012. Professor
Yoshida speaks of his aspiration,
I am very excited about this newopportunity at Kavli IPMU. I've beenworking on numerical cosmology,
especially on structure formation in
the Universe. At Kavli IPMU, I'd liketo make the best use of data fromthe Subaru HSC survey to study thenature of dark matter and distantsupernovae.
Moving Out
Kavli IPMU postdoctoral fellow
Atsushi Nishizawa has taken aposition as a Lecturer at the Institutefor Advanced Research of Nagoya
University . He was at Kavli IPMU from
September 1, 2010 to April 30, 2014.
Also, Kavli IPMU postdoctoral fellow
Malte Schramm resigned the Kavli
IPMU at the expiration of his term,from May 1, 2011 to April 30, 2014
and from May 16 to June 30, 2014.

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News