Name: KEK Theory Workshop 2025
Start: 2025-12-16T09:00:00+09:00
End: 2025-12-18T18:00:00+09:00
Location: KEK Tsukuba Campus

KEK Theory Workshop 2025

from Tuesday, 16 December 2025 (09:00) to Thursday, 18 December 2025 (18:00)

Monday, 15 December 2025
Tuesday, 16 December 2025

09:00

09:00 - 09:20
Room: K03 Seminar Hall
09:20
09:20 - 09:30
Room: K03 Seminar Hall
Contributions

09:20 Welcome to KEK Theory Workshop 2025 - Kohtaroh Miura (KEK)
09:30 I
I
09:30 - 10:30
Room: K03 Seminar Hall
Contributions

09:30 APS index and the domain-wall fermion - Tetsuya Onogi (Osaka University)
10:30 Coffee Break
Coffee Break
10:30 - 10:45
Room: K03 Seminar Hall
10:45 II
II
10:45 - 11:45
Room: K03 Seminar Hall
Contributions

10:45 Bootstrapping Boundary Conformal Field Theory - Yuya Kusuki (Kyushu University)
11:45 Lunch Break
Lunch Break
11:45 - 13:30
Room: Cafeteria
13:30 III
III
13:30 - 14:30
Room: K03 Seminar Hall
Contributions

13:30 Recent developments in double-scaled SYK - Kazumi Okuyama (Shinshu University)
14:30

14:30 - 14:50
Room: K03 Seminar Hall
14:50 IA
IA
14:50 - 16:30
Room: K03 Seminar Hall
Contributions

14:50 Towards a Hamiltonian Framework for String-Inspired Nonlocality - Wei-Hsiang Shao (RIKEN iTHEMS)

15:10 Anomaly-induced negative magnetoresistance in D3-D7 systems in holography - Shin Nakamura (Chuo University)

15:30 Fundamental structure of string geometry theory - Matsuo Sato (Hirosaki University)

15:50 The E11-Inspired Approach to Gravity - Keith Glennon (OIST)

16:10 TBD - Gregory Loges (KEK)
IB
IB
14:50 - 16:30
Room: K03 Meeting Room I
Contributions

14:50 Chiral Anomaly in $(3+1)$-dimensional Staggered Fermion System - Shoto Aoki (RIKEN iTHEMS)

15:10 How to formulate the Z_8 topological invariant of Majorana fermion on a lattice - Sho Araki (Osaka University)

15:30 Non-singlet conserved charges and anomalies in 3+1 D staggered fermions - Tatsuya Yamaoka (Osaka University)

15:50 Simulating the real-time quantum evolution by the Lefschetz thimble method - Jun Nishimura (KEK/SOKENDAI)

16:10 Complex Langevin studies of the Lorentzian IKKT Matrix model - Naoyuki Yamamori (KEK/SOKENDAI)
16:30 Coffee Break
Coffee Break
16:30 - 16:50
Room: K03 Seminar Hall
16:50 IIA
IIA
16:50 - 18:10
Room: K03 Seminar Hall
Contributions

16:50 Unified exact WKB framework for quantum resonance and scattering theory - Okuto Morikawa (RIKEN iTHEMS)

17:10 Monte Carlo studies of the phase transition in the SUSY-deformed IKKT matrix model - Tin-Long Chau (KEK/SOKENDAI)

17:30 Bridging IKKT and the polarized IKKT - Cheng-Tsung Wang (KEK/SOKENDAI)

17:50 When Disorder Meets Conformal Defects: The Emergence of Logarithmic Structures - Soichiro Shimamori (Osaka University)
IIB
IIB
16:50 - 18:10
Room: K03 Meeting Room I
Contributions

16:50 High-Energy Pion Scattering in Holographic QCD - Bartosz Pyszkowski (Kyoto University, YITP)

17:10 Large θ angle in the two-dimensional large N CP^{N-1} model - Tsubasa Sugeno (Tohoku University)

17:30 Bootstraping quantum mechanics - Takeshi Morita (Shizuoka University)

17:50 Causal Bounds on EFTs with anomalies with a Pseudoscalar, Photons, and Gravitons (bootstraping EFT) - Jaehoon Jeong (KIAS)
18:30

18:30 - 20:15
Room: M01 Kenkyu-Honkan, Kobayashi Hall
Wednesday, 17 December 2025
09:30 I
I
09:30 - 10:30
Room: K03 Seminar Hall
Contributions

09:30 Hermitian topological boundary states as open quantum systems - Masatoshi Sato (Kyoto University)
10:30 Coffee Break
Coffee Break
10:30 - 10:45
Room: K03 Seminar Hall
10:45 II
II
10:45 - 11:45
Room: K03 Seminar Hall
Contributions

10:45 Topology of nonlinear dynamics - Takahiro Sagawa (The University of Tokyo)
11:45 (in front of K03 Building)
(in front of K03 Building)
11:45 - 12:00
Room: In Front of K03 Building

12:00 Lunch Break
Lunch Break
12:00 - 13:30
Room: Cafeteria
13:30 III
III
13:30 - 14:30
Room: K03 Seminar Hall
Contributions

13:30 Complex saddles of de Sitter gravity via holography - Yasuaki Hikida (Osaka Institute of Technology)
14:30 Coffee Break
Coffee Break
14:30 - 14:50
Room: K03 Seminar Hall
14:50 IA
IA
14:50 - 16:30
Room: K03 Seminar Hall
Contributions

14:50 No-boundary Proposal and Hořava-Lifshitz Gravity - Hiroki Matsui (Nihon University)

15:10 Kaluza–Klein photon contribution to charged black hole in 2D perspective - Yu Miyauchi (Keio University)

15:30 Effective Dynamics of Spherically Symmetric Static Spacetime - Yuki Yokokura (KEK)

15:50 Essential Renormalization Group Equation for Gravity coupled to a Scalar field - Nobuyoshi Ohta (Osaka Metropolitan University)

16:10 On Nonlinear-Supersym metric General Relativity(NLSGR) - Kazunari Shima (Saitama Institute of Technology)
IB
IB
14:50 - 16:30
Room: K03 Meeting Room I
Contributions

14:50 Holography by conformal smearing - Sinya Aoki (RIKEN iTHEMS)

15:10 Quark confinement due to symmetric instantons reflecting holography - Kei-Ichi Kondo (Chiba University)

15:30 Dyonic lines in 3d monopole semiclassics - Yui Hayashi (Kyoto University, YITP)

15:50 Lefshetz thimble study of U(1) gauge theory in 1 + 1 dimensions - Hiroki Ohata (KEK)

16:10 Complex Langevin Lattice QCD at Extremely High Density for Color Superconductivity - Kohtaroh Miura (KEK)
16:30 Coffee Break
Coffee Break
16:30 - 16:50
Room: K03 Seminar Hall
16:50 IIA
IIA
16:50 - 18:30
Room: K03 Seminar Hall
Contributions

16:50 Higher-form symmetries and spin structure in axion electrodynamics - Ryo Yokokura (Keio University)

17:10 Vacuum structures of QCD2 from non-invertible anyon condensation - Naoto Kan (Osaka University)

17:30 Modified entangled states for perfect quantum teleportation - Sora Kobayashi (Chiba University)

17:50 Semi-classical correspondence between Petz map and Bayes' rule: from Lindbladian to reverse diffusion - Ryota Nasu (Shizuoka University)

18:10 Description of curved spaces by finite-size matrices - Tatsuya Seko (Shizuoka University)
IIB
IIB
16:50 - 18:10
Room: K03 Meeting Room I
Contributions

16:50 Twist field deformations in string field theory - Xianghang Zhang (Nagoya University)

17:10 Higher-derivative theory of fermion and supersymmetry - Takeo Inami (RIKEN)

17:30 Algebraic Structure in the Exact Renormalization Group - Taichi Tanaka (Nihon University)

17:50 On anomalies in family unification models - Hiroki Wada (Tohoku University)
Thursday, 18 December 2025
09:30 I
I
09:30 - 10:30
Room: K03 Seminar Hall
Contributions

09:30 Heterotic string theory and N=(0,1) supersymmetric field theory - Kazuya Yonekura (Tohoku University)
10:30 Coffee Break
Coffee Break
10:30 - 10:45
Room: K03 Seminar Hall
10:45 II
II
10:45 - 11:45
Room: K03 Seminar Hall
Contributions

10:45 Holography for a Closed Universe with a Quantum Reference Frame - Kanato Goto (Osaka University)
11:45 Summary and Future Prospect
Summary and Future Prospect
11:45 - 12:00
Room: K03 Seminar Hall