KEK-THEORY Workshop 2024

Session

Parallel Session

Dec 11, 2024, 2:50 PM

K03 Seminar Hall (KEK Tsukuba Campus)

Conveners

Parallel Session: IB

• Yuta Hamada

Parallel Session: IA

• Shin Nakamura

Parallel Session: IIA

• Yui Hayashi

Parallel Session: IIB

• Ryo Yokokura

Parallel Session: IA

• Kohtaroh MIURA (KEK IPNS)

Parallel Session: IB

• Matsuo Sato

Parallel Session: IIA

• Asato Tsuchiya

Parallel Session: IIB

• Gregory Loges

16. deSitter from M-Theory

Dr Gregory Loges

12/11/24, 2:50 PM

10. Tensor renormalization group study of (1+1)-dimensional U(1) gauge-Higgs model at $\theta = \pi$ with Luescher's admissibility condition

Dr Shin-ichiro Akiyama

12/11/24, 2:50 PM

15. Non-supersymmetric heterotic strings

Mr Arata Ishige

12/11/24, 3:15 PM

11. Tensor renormalization group study of 3D Yang-Mills theories with the reduced tensor network formulation

Dr Atis Yosprakob

12/11/24, 3:15 PM

12. Grassmann bond-weighted tensor renormalization group approach to 1+1D two-color QCD with staggered fermions at finite density

Mr Ho Pai Kwok

12/11/24, 3:40 PM

14. Quantum Black Brane in the 4d Standard Model

Mr Hayate Kimura

12/11/24, 3:40 PM

17. Species scale in one-loop correction

Mr Yuri Michinobu

12/11/24, 4:05 PM

13. Tensor renormalization group analysis of entanglement entropy in (1+1)-dimensional XY model

Dr Gota Tanaka

12/11/24, 4:05 PM

21. 't Hooft line in 4D U(1) lattice gauge theory, and microscopic descriptions of dyon's statistics

Mr Soma Onoda

12/11/24, 5:00 PM

18. Non-Lagrangian approach to GKP-Witten relation by conformal smearing

Prof. Sinya Aoki

12/11/24, 5:00 PM

22. Proper Effective Temperature and Order Parameters in Relativistic Non-Equilibrium Steady States

Prof. Shin Nakamura

12/11/24, 5:25 PM

19. Quantum tunneling, decoherence and the beginning of the Universe from Lefschetz thimble real-time simulations

Prof. Jun Nishimura

12/11/24, 5:25 PM

Monte　Carlo simulations of quantum time-evolution based on the real-
time path integral have been thought to be extremely difficult since it involves a
phase factor exp(iS) in the integrand, which causes a severe sign
problem. We apply the Lefschetz thimble method with various new
techniques to such systems. In this talk, I would like to discuss a new
understanding of quantum tunneling...

23. A scaling relation in large-N gauge theories at finite temperature

Prof. Takeshi Morita

12/11/24, 5:50 PM

20. Complex Langevin Lattice QCD for Color-Superconductivity at Extremely High Density

Kohtaroh MIURA (KEK IPNS)

12/11/24, 5:50 PM

27. Selection rules of topological solitons from non-invertible symmetries in axion electrodynamics

Dr Ryo Yokokura

12/12/24, 2:50 PM

25. Universal structure of islands in evaporating black holes

Dr Yoshinori Matsuo

12/12/24, 2:50 PM

28. Anyon condensation in mixed-state topological order #93

Dr Ken Kikuchi

12/12/24, 3:15 PM

24. Narain CFT from error-correcting code via integers of cyclotomic field

Mr Takumi Oikawa

12/12/24, 3:15 PM

29. Bridging two semiclassical confinement mechanisms: monopole and center vortex

Dr Yui Hayashi

12/12/24, 3:40 PM

26. Entanglement R'enyi entropy and boson-fermion duality in the massless Thirring model

Mr Harunobu Fujimura

12/12/24, 3:40 PM

36. Localized RG flows on composite defects and C-theorem

Dr Dongsheng Ge

12/12/24, 4:05 PM

37. Thermal Area Law in Long-Range Interacting Systems

Dr Donghoon Kim

12/12/24, 4:05 PM

31. Defining IKKT matrix model by gauge fixing Lorentz symmetry

Mr Worapat Piensuk

12/12/24, 4:50 PM

34. Unitarity of string geometry theory

Prof. Matsuo Sato

12/12/24, 4:50 PM

35. K27 as a symmetry of closed bosonic strings and branes

Dr Keith Glennon

12/12/24, 5:15 PM

30. Numerical studies of the type IIB matrix model with the gauge-fixed Lorentz symmetry

Mr Ashutosh Tripathi

12/12/24, 5:15 PM

32. Complex Langevin simulation of the IKKT matrix model with or without "gauge-fixing" the Lorentz symmetry

Mr Naoyuki Yamamori

12/12/24, 5:40 PM

38. Revisiting Hawking Radiation via Generalized Uncertainty Principle

Mr Tin-Long Chau

12/12/24, 5:40 PM

The generalized uncertainty relation is expected to be an essential element in a theory of quantum gravity. We examine its effect on the Hawking radiation of a Schwarzschild black hole formed from collapse by incorporating a minimal uncertainty length scale into the radial coordinate of the background. This is implemented in both the ingoing Vaidya coordinates and a family of freely falling...

33. TBA

Dr Kohta Hatakeyama

12/12/24, 6:05 PM

39. UV Origin of Late-time Hawking Radiation

Mr Cheng-Tsung WANG

12/12/24, 6:05 PM

We reexamined the connection between the Hawking radiation of a Schwarzschild black hole formed from collapse and ultraviolet(UV) physics with the local Lorentz symmetry violation or the existence of a minimal length. Significant modifications are reported after the scrambling time in both cases, which reflects the UV sensitivity of Hawking radiation. Depending on the physics at the...