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, December 16, 2025 (9:00 AM) to Thursday, December 18, 2025 (6:00 PM)

Monday, December 15, 2025
Tuesday, December 16, 2025

9:00 AM

9:00 AM - 9:20 AM
Room: K03 Seminar Hall
9:20 AM
9:20 AM - 9:30 AM
Room: K03 Seminar Hall
Contributions

9:20 AM Welcome to KEK Theory Workshop 2025 - Kohtaroh Miura (KEK)
9:30 AM I
I
9:30 AM - 10:30 AM
Room: K03 Seminar Hall
Contributions

9:30 AM APS index and the domain-wall fermion - Tetsuya Onogi (Osaka University)
10:30 AM Coffee Break
Coffee Break
10:30 AM - 10:45 AM
Room: K03 Seminar Hall
10:45 AM II
II
10:45 AM - 11:45 AM
Room: K03 Seminar Hall
Contributions

10:45 AM Bootstrapping Boundary Conformal Field Theory - Yuya Kusuki (Kyushu University)
11:45 AM Lunch Break
Lunch Break
11:45 AM - 1:30 PM
Room: Cafeteria
1:30 PM III
III
1:30 PM - 2:30 PM
Room: K03 Seminar Hall
Contributions

1:30 PM Recent developments in double-scaled SYK - Kazumi Okuyama (Shinshu University)
2:30 PM

2:30 PM - 2:50 PM
Room: K03 Seminar Hall
2:50 PM IA
IA
2:50 PM - 4:30 PM
Room: K03 Seminar Hall
Contributions

2:50 PM Towards a Hamiltonian Framework for String-Inspired Nonlocality - Wei-Hsiang Shao (RIKEN iTHEMS)

3:10 PM Anomaly-induced negative magnetoresistance in D3-D7 systems in holography - Shin Nakamura (Chuo University)

3:30 PM Fundamental structure of string geometry theory - Matsuo Sato (Hirosaki University)

3:50 PM The E11-Inspired Approach to Gravity - Keith Glennon (OIST)

4:10 PM TBD - Gregory Loges (KEK)
IB
IB
2:50 PM - 4:30 PM
Room: K03 Meeting Room I
Contributions

2:50 PM Chiral Anomaly in $(3+1)$-dimensional Staggered Fermion System - Shoto Aoki (RIKEN iTHEMS)

3:10 PM How to formulate the Z_8 topological invariant of Majorana fermion on a lattice - Sho Araki (Osaka University)

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

3:50 PM Simulating the real-time quantum evolution by the Lefschetz thimble method - Jun Nishimura (KEK/SOKENDAI)

4:10 PM Complex Langevin studies of the Lorentzian IKKT Matrix model - Naoyuki Yamamori (KEK/SOKENDAI)
4:30 PM Coffee Break
Coffee Break
4:30 PM - 4:50 PM
Room: K03 Seminar Hall
4:50 PM IIA
IIA
4:50 PM - 6:10 PM
Room: K03 Seminar Hall
Contributions

4:50 PM Unified exact WKB framework for quantum resonance and scattering theory - Okuto Morikawa (RIKEN iTHEMS)

5:10 PM Monte Carlo studies of the phase transition in the SUSY-deformed IKKT matrix model - Tin-Long Chau (KEK/SOKENDAI)

5:30 PM Bridging IKKT and the polarized IKKT - Cheng-Tsung Wang (KEK/SOKENDAI)

5:50 PM When Disorder Meets Conformal Defects: The Emergence of Logarithmic Structures - Soichiro Shimamori (Osaka University)
IIB
IIB
4:50 PM - 6:10 PM
Room: K03 Meeting Room I
Contributions

4:50 PM High-Energy Pion Scattering in Holographic QCD - Bartosz Pyszkowski (Kyoto University, YITP)

5:10 PM Large θ angle in the two-dimensional large N CP^{N-1} model - Tsubasa Sugeno (Tohoku University)

5:30 PM Bootstraping quantum mechanics - Takeshi Morita (Shizuoka University)

5:50 PM Causal Bounds on EFTs with anomalies with a Pseudoscalar, Photons, and Gravitons (bootstraping EFT) - Jaehoon Jeong (KIAS)
6:30 PM

6:30 PM - 8:15 PM
Room: M01 Kenkyu-Honkan, Kobayashi Hall
Wednesday, December 17, 2025
9:30 AM I
I
9:30 AM - 10:30 AM
Room: K03 Seminar Hall
Contributions

9:30 AM Hermitian topological boundary states as open quantum systems - Masatoshi Sato (Kyoto University)
10:30 AM Coffee Break
Coffee Break
10:30 AM - 10:45 AM
Room: K03 Seminar Hall
10:45 AM II
II
10:45 AM - 11:45 AM
Room: K03 Seminar Hall
Contributions

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

12:00 PM Lunch Break
Lunch Break
12:00 PM - 1:30 PM
Room: Cafeteria
1:30 PM III
III
1:30 PM - 2:30 PM
Room: K03 Seminar Hall
Contributions

1:30 PM Complex saddles of de Sitter gravity via holography - Yasuaki Hikida (Osaka Institute of Technology)
2:30 PM Coffee Break
Coffee Break
2:30 PM - 2:50 PM
Room: K03 Seminar Hall
2:50 PM IA
IA
2:50 PM - 4:30 PM
Room: K03 Seminar Hall
Contributions

2:50 PM No-boundary Proposal and Hořava-Lifshitz Gravity - Hiroki Matsui (Nihon University)

3:10 PM Kaluza–Klein photon contribution to charged black hole in 2D perspective - Yu Miyauchi (Keio University)

3:30 PM Effective Dynamics of Spherically Symmetric Static Spacetime - Yuki Yokokura (KEK)

3:50 PM Essential Renormalization Group Equation for Gravity coupled to a Scalar field - Nobuyoshi Ohta (Osaka Metropolitan University)

4:10 PM On Nonlinear-Supersym metric General Relativity(NLSGR) - Kazunari Shima (Saitama Institute of Technology)
IB
IB
2:50 PM - 4:30 PM
Room: K03 Meeting Room I
Contributions

2:50 PM Holography by conformal smearing - Sinya Aoki (RIKEN iTHEMS)

3:10 PM Quark confinement due to symmetric instantons reflecting holography - Kei-Ichi Kondo (Chiba University)

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

3:50 PM Lefshetz thimble study of U(1) gauge theory in 1 + 1 dimensions - Hiroki Ohata (KEK)

4:10 PM Complex Langevin Lattice QCD at Extremely High Density for Color Superconductivity - Kohtaroh Miura (KEK)
4:30 PM Coffee Break
Coffee Break
4:30 PM - 4:50 PM
Room: K03 Seminar Hall
4:50 PM IIA
IIA
4:50 PM - 6:30 PM
Room: K03 Seminar Hall
Contributions

4:50 PM Higher-form symmetries and spin structure in axion electrodynamics - Ryo Yokokura (Keio University)

5:10 PM Vacuum structures of QCD2 from non-invertible anyon condensation - Naoto Kan (Osaka University)

5:30 PM Modified entangled states for perfect quantum teleportation - Sora Kobayashi (Chiba University)

5:50 PM Semi-classical correspondence between Petz map and Bayes' rule: from Lindbladian to reverse diffusion - Ryota Nasu (Shizuoka University)

6:10 PM Description of curved spaces by finite-size matrices - Tatsuya Seko (Shizuoka University)
IIB
IIB
4:50 PM - 6:10 PM
Room: K03 Meeting Room I
Contributions

4:50 PM Twist field deformations in string field theory - Xianghang Zhang (Nagoya University)

5:10 PM Higher-derivative theory of fermion and supersymmetry - Takeo Inami (RIKEN)

5:30 PM Algebraic Structure in the Exact Renormalization Group - Taichi Tanaka (Nihon University)

5:50 PM On anomalies in family unification models - Hiroki Wada (Tohoku University)
Thursday, December 18, 2025
9:30 AM I
I
9:30 AM - 10:30 AM
Room: K03 Seminar Hall
Contributions

9:30 AM Heterotic string theory and N=(0,1) supersymmetric field theory - Kazuya Yonekura (Tohoku University)
10:30 AM Coffee Break
Coffee Break
10:30 AM - 10:45 AM
Room: K03 Seminar Hall
10:45 AM II
II
10:45 AM - 11:45 AM
Room: K03 Seminar Hall
Contributions

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