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Program
Bulk-Edge/Boundary Correspondence 2022 (BE/BC2022)
International workshop”Variety and universality of bulk-edge correspondence in
topological phases:
From solid state physics to transdisciplinary concepts”
February 11-13, (2022)
Online (Zoom) & University of Tsukuba
All times of the schedule are Japan Standard Time (UTC+9)(as of February 10, 2022)

2Feb. 11 (Fri.), 2022
All times are Japan Standard Time (UTC+9)
Session 1, Chair : Akio Kimura
Yasuhiro Hatsugai (University of Tsukuba)

9:00 – 9:20

(Welcome) “Bulk-edge correspondence :From quantum Hall effect”
9:20 – 9:50

Satoshi Iwamoto (University of Tokyo)“Topological photonics in integrated photonic platforms”

9:50 – 10:30

Kyogo Kawaguchi (RIKEN)“Topology and anomalous density fluctuations in collective cell dynamics”
10:30 – 10:45

Coffee (self :-))
Session 2, Chair : Hideo Aoki

10:45 – 11:25

Bohm-Jung Yang (Seoul National University)“Topology of acoustic phonons”

11:25 – 11:45

Tiantian Zhang (Tokyo Institute of Technology)“Local and global topology for Z2 Dirac points”

11:45 – 12:25

Mario Novak (University of Zagreb)“Optical and thermodynamic signatures of 3D Dirac semimetals systems”
12:25 – 13:25

Photo & Lunch
Session 3, Chair : Tomonari Mizoguchi

13:25 – 14:05

Ren-Min Ma (Peking University)“Topological bulk and vortex lasers”

14:05 – 14:35

Kazuya Yamashita (Kyoto University)“Topological atom laser in synthetic dimensions”

14:35 – 14:50

Coffee (self :-))
Session 4, Chair : Takahiro Fukui

14:50 – 15:10

Seishiro Ono (University of Tokyo)“”Symmetry-based approach to superconductors: symmetry indicators,superconducting nodes, and material investigation””
15:10 – 15:40

Sota Kitamura (University of Tokyo)“Nonreciprocal transport in noncentrosymmetric insulators”

3(Continued)
15:40 – 15:55

Coffee (self :-))
Session 5, Chair : Yoshihito Kuno

15:55 – 16:15Sciences)

Takahiro Misawa (Beijing Academy of Quantum Information“Zeros of Green functions in topological insulators”

16:15 – 16:40

Tomonari Mizoguchi (University of Tsukuba)“Square-root topological phases in two and three dimensions”
16:40 – 17:20

Sebastian Huber (ETH Zurich)“Fragile topology in classical waves and strongly correlated superconductors”

4Feb. 12 (Sat.), 2022
All times are Japan Standard Time (UTC+9)
Session 6, Chair : Tsuneya Yoshida
9:00 – 9:40

Jinkyu Yang (University of Washington)“Topological guiding of stress waves in bolted plate structures”
9:40 – 10:20

Kenji Tsuruta (Okayama University)“Design of Topological and Non-reciprocal Waveguide by Phononic Crystals”
10:20 – 10:50

Shun Takahashi (Kyoto Inst. Tech.)“Microwave measurements on three-dimensional topological photonic crystals”
10:50 – 11:05

Coffee (self :-))
Session 7, Chair : Yasuhiro Hatsugai

11:05 – 11:35

Yoshiro Takahashi (Kyoto University)“Study of topological phenomena using ultracold atoms in an optical lattice”
11:35 – 12:05

Akio Kimura (Hiroshima University)“Bulk-edge correspondence in topological materials from ARPES perspectives”
12:05 – 12:35

Tohru Kawarabayashi (Toho University)“An extension of chiral symmetry and exact edge modes in finite systems”
12:35 – 13:35

Photo & Lunch
Session 8, Chair : Yasuhiro Hatsugai

13:35 – 14:35

Posters (Breakout rooms)
Session 9, Chair : Yoshiro Takahashi

14:35 – 15:15

Ching Hua Lee (National University of Singapore)“New developments and realizations of non-Hermitian and topological boundarystates”
15:15 – 15:40

Tsuneya Yoshida (University of Tsukuba)“Correlation effects on non-Hermitian topology”

15:40 – 16:05

Ken-ichiro Imura (Hiroshima University)“Pseudo-diffusive wave-packet dynamics in a non-Hermitian system with
non-reciprocal hopping”(Continued)

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16:05 – 16:20

Coffee (self :-))
Session 10, Chair : Satoshi Iwamoto

16:20 – 16:40

Ken Mochizuki (Tohoku University)“Topological edge states in open or nonlinear optical systems”
16:40 – 17:05

Toshikaze Kariyado (National Institute for Materials Science)“In-gap transport with pi-flux lattices in topological metamaterials”
17:05 – 17:45

Pierre Delplace (CNRS, Ecole Normale Supérieure de Lyon)“Anomalous chiral modes in 2D scattering networks”

6Feb. 13 (Sun), 2022
All times are Japan Standard Time (UTC+9)
Session 11, Chair : Ken-ichiro Imura
9:00 – 9:30

Hideo Aoki (AIST/University of Tokyo)“Designing topological systems in and out of equilibrium: a perspective”
9:30 – 10:10

Hidenori Fukaya (Osaka University)“Bulk-edge correspondence of anomaly and a physicist-friendly reformulation ofthe APS index”
10:10 – 10:50

Tomoki Ozawa (Tohoku University)“Quantum metric and topology”

10:50 – 11:05

Coffee (self :-))
Session 12, Chair : Tohru Kawarabayashi

11:05 – 11:35

Takahiro Fukui (Ibaraki University)“Moiré Landau levels in a C4 symmetric twisted system”

11:35 – 12:05

Shin Hayashi (Tohoku University)“On a topological invariant related to corner states via index theory and matrix
factorizations”
12:05 – 12:30

Yoshihito Kuno (Akita University)“Topological pump from SPT phases and its bulk-edge-correspondence in interactingsystems”
12:30 – 12:35

Yasuhiro Hatsugai (University of Tsukuba)(Ending remark) “Bulk-edge correspondence : Today and future”

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POSTERS
Chair: Y. Hatsugai
Zoom (Breakout rooms)
13:35-14:35, Feb. 12, Japan Standard Time (UTC+9).
P 1.
Katsumi Aoyagi (Toho University)“Quantum Monte Carlo Study of Quantized Berry’s Phase in Two-Dimensional
Anisotropic Spin Systems”
P 2.

Kohei Hayakawa (Toho University)“Edge States in a Deformed Topological System in Two Dimensions”

P 3.
Chengkun Zhang (University of Tokyo)“Theretical analysis on photonic analog of quantum spin Hall effect in a square-lattice
based photonic topological insulator”
P 4.
Koichi Asaga (Ibaraki University)“Diophantine equation for the Rice-Mele model and the associated topological pump”
P 5.

Koji Kudo (Penn State University)“Generalized Streda formula of the spinful quantum Hall systems”

P 6.

Gen Najima (University of Tsukuba)“Dynamics governed by symmetry-protected exceptional ring for mechanicalgraphene”

P 7.
Ryoichiro Tamotsu (Toho University)“Numerical Study of Irrational Charges in Multi-layered Fermion-Vortex Systems”
P 8.

Yuri Fukaya (CNR-SPIN, c/o University of Salerno)“Unconventional Josephson effects with spin-triplet pairing textures innoncentrosymmetric superconductors”

P 9.
Hiromasa Wakao (University of Tsukuba)“Discriminant indicators with generalized four- and six-fold rotational symmetry andtheir applications to toy models”
P 10.
Takuma Isobe (University of Tsukuba)“Non-hermitian topology in the generalized eigenvalue problem with indefinite
Hermitian matrices”
P 11.
Daiki Matsumoto (University of Tsukuba)“Square-root higher-order topology on a honeycomb lattice with two-sites decoration.”
P 12.
Takumi Kuroda (University of Tsukuba)“Characteristic feature of flat-band wavefunction detected by machine learning”
P 13.
P 14.

Yuki Soeda (Ibaraki Univ.)“Landau levels of a C4 symmetric twisted bilayer system”
Takahiro Orito (Hiroshima University)“Many-body and boundary effects in non-Hermitian topological systems”