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KEK-THEORY Workshop 2024

11–13 Dec 2024
KEK Tsukuba Campus
Asia/Tokyo timezone

Contribution List

39 out of 39 displayed
  1. 1. Tensor renormalization group and application to elementary particle physics
    Prof. Shinji Takeda
    11/12/2024, 09:30

    Tensor network is a powerful numerical tool to compute the wave function of quantum many-body systems and to directly evaluate the path integrals in quantum field theory. In this talk, I mainly explain the latter case in detail. After introducing the basics of the tensor network. I give an overview of its recent progress especially in elementary particle physics. As specific examples, I...

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  2. 2. Recent progress in tensor network approaches for condensed matter physics
    Dr Tsuyoshi Okubo
    11/12/2024, 10:45
  3. 3. Bosonization revisited: application to the sign problem and lattice chiral fermion
    Dr Hiroki Ohata
    11/12/2024, 13:30
  4. 16. deSitter from M-Theory
    Dr Gregory Loges
    11/12/2024, 14:50
  5. 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
    11/12/2024, 14:50
  6. 15. Non-supersymmetric heterotic strings
    Mr Arata Ishige
    11/12/2024, 15:15
  7. 11. Tensor renormalization group study of 3D Yang-Mills theories with the reduced tensor network formulation
    Dr Atis Yosprakob
    11/12/2024, 15:15
  8. 12. Grassmann bond-weighted tensor renormalization group approach to 1+1D two-color QCD with staggered fermions at finite density
    Mr Ho Pai Kwok
    11/12/2024, 15:40
  9. 14. Quantum Black Brane in the 4d Standard Model
    Mr Hayate Kimura
    11/12/2024, 15:40
  10. 17. Species scale in one-loop correction
    Mr Yuri Michinobu
    11/12/2024, 16:05
  11. 13. Tensor renormalization group analysis of entanglement entropy in (1+1)-dimensional XY model
    Dr Gota Tanaka
    11/12/2024, 16:05
  12. 21. 't Hooft line in 4D U(1) lattice gauge theory, and microscopic descriptions of dyon's statistics
    Mr Soma Onoda
    11/12/2024, 17:00
  13. 18. Non-Lagrangian approach to GKP-Witten relation by conformal smearing
    Prof. Sinya Aoki
    11/12/2024, 17:00
  14. 22. Proper Effective Temperature and Order Parameters in Relativistic Non-Equilibrium Steady States
    Prof. Shin Nakamura
    11/12/2024, 17:25
  15. 19. Quantum tunneling, decoherence and the beginning of the Universe from Lefschetz thimble real-time simulations
    Prof. Jun Nishimura
    11/12/2024, 17:25

    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...

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  16. 23. A scaling relation in large-N gauge theories at finite temperature
    Prof. Takeshi Morita
    11/12/2024, 17:50
  17. 20. Complex Langevin Lattice QCD for Color-Superconductivity at Extremely High Density
    Kohtaroh MIURA (KEK IPNS)
    11/12/2024, 17:50
  18. 4. Partially fault-tolerant quantum computing architecture
    Dr Yutaro Akahoshi
    12/12/2024, 09:30
  19. 5. Quantum Error Correction and Holography
    Prof. Tatsuma Nishioka
    12/12/2024, 10:45
  20. 6. Decoding quantum information from chaos: beyond the standard situation
    Prof. Yoshifumi Nakata
    12/12/2024, 13:30

    A central challenge in large-scale quantum information processing is
    managing noise in quantum systems. Quantum error correction (QEC)
    addresses this by encoding quantum states into quantum error
    correction codes (QECCs) before noise occurs and decoding them
    afterward. Recently, QEC has attracted significant attention in
    theoretical physics due to its potential connections to...

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  21. 27. Selection rules of topological solitons from non-invertible symmetries in axion electrodynamics
    Dr Ryo Yokokura
    12/12/2024, 14:50
  22. 25. Universal structure of islands in evaporating black holes
    Dr Yoshinori Matsuo
    12/12/2024, 14:50
  23. 28. Anyon condensation in mixed-state topological order #93
    Dr Ken Kikuchi
    12/12/2024, 15:15
  24. 24. Narain CFT from error-correcting code via integers of cyclotomic field
    Mr Takumi Oikawa
    12/12/2024, 15:15
  25. 29. Bridging two semiclassical confinement mechanisms: monopole and center vortex
    Dr Yui Hayashi
    12/12/2024, 15:40
  26. 26. Entanglement R'enyi entropy and boson-fermion duality in the massless Thirring model
    Mr Harunobu Fujimura
    12/12/2024, 15:40
  27. 36. Localized RG flows on composite defects and C-theorem
    Dr Dongsheng Ge
    12/12/2024, 16:05
  28. 37. Thermal Area Law in Long-Range Interacting Systems
    Dr Donghoon Kim
    12/12/2024, 16:05
  29. 31. Defining IKKT matrix model by gauge fixing Lorentz symmetry
    Mr Worapat Piensuk
    12/12/2024, 16:50
  30. 34. Unitarity of string geometry theory
    Prof. Matsuo Sato
    12/12/2024, 16:50
  31. 35. K27 as a symmetry of closed bosonic strings and branes
    Dr Keith Glennon
    12/12/2024, 17:15
  32. 30. Numerical studies of the type IIB matrix model with the gauge-fixed Lorentz symmetry
    Mr Ashutosh Tripathi
    12/12/2024, 17:15
  33. 32. Complex Langevin simulation of the IKKT matrix model with or without "gauge-fixing" the Lorentz symmetry
    Mr Naoyuki Yamamori
    12/12/2024, 17:40
  34. 38. Revisiting Hawking Radiation via Generalized Uncertainty Principle
    Mr Tin-Long Chau
    12/12/2024, 17:40

    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...

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  35. 33. TBA
    Dr Kohta Hatakeyama
    12/12/2024, 18:05
  36. 39. UV Origin of Late-time Hawking Radiation
    Mr Cheng-Tsung WANG
    12/12/2024, 18:05

    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...

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  37. 7. Tensor Networks as Conceptual and Computational Tools for Statistical Physics
    Prof. Masaki Oshikawa
    13/12/2024, 09:00
  38. 8. Advancements in Numerical Methods: Synergy of Tensor Networks and Quantum Algorithms
    Prof. Hiroshi Ueda
    13/12/2024, 10:15
  39. 9. Some rigorous and numerical results for renormalization groups of tensor networks
    Prof. Slava Rychkov
    13/12/2024, 11:30