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2021 Fiscal Year Annual Research Report

Study of Topological Materials lead by quantum anomalies, branes and solitons

Planned Research

Project AreaDiscrete Geometric Analysis for Materials Design
Project/Area Number 17H06462
Research InstitutionKyoto University

Principal Investigator

橋本 幸士  京都大学, 理学研究科, 教授 (80345074)

Co-Investigator(Kenkyū-buntansha) 日高 義将  大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (00425604)
押川 正毅  東京大学, 物性研究所, 教授 (50262043)
衛藤 稔  山形大学, 理学部, 教授 (50595361)
Project Period (FY) 2017-06-30 – 2022-03-31
Keywords物質と離散幾何学 / ホログラフィー原理 / トポロジカルソリトン / 高次対称性
Outline of Annual Research Achievements

物質に双対な重力時空を再構築するため、離散幾何学の手法を応用した機械学習のニューラル常微分方程式を用い、創発時空を発見するプロトコルを開発した。また、とくに物質側をQCD物質とした場合に、Wilson loop や計算複雑性などを用いることで創発時空を再構築する公式を発案した。これにより、特に創発時空上のブラックホールの内側までも再構築することが可能となった。これらの観点をまとめ、物理学と機械学習に関する英文著書を出版した。
トポロジカルソリトンの研究においては、超高密度状態において最も基本的なカイラル非アーベリアン量子渦を発見した。また6次元時空SU(5)理論において非アーベリアン量子渦がGUTとブレーンワールド宇宙論を自然に融合することを示した。また拡張ヒッグス模型においてソリトン分極がZ-stringを安定化することを示した。
また、対称性の一般化として高次群による拡張を行なった。アクシオンを含む電磁気学において3群の構造があることを2020年度の研究で明らかにしたがそれを超伝導体へ拡張することで、さらに4群の構造が現れることを発見した。
また、AdS/CFT対応の研究においては、holographyを用いて導出された核子の行列模型を用いて原子核の結合エネルギーを計算し、この模型において核子数密度の飽和則、結合エネルギーの飽和則、魔法数という3つの重要な性質を再現することに成功した。また、量子情報理論における加法性予想について、ブラックホール近傍の輻射場の状態において成立することを示した。

Research Progress Status

令和3年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和3年度が最終年度であるため、記入しない。

  • Research Products

    (33 results)

All 2022 2021 Other

All Int'l Joint Research (4 results) Journal Article (11 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 11 results,  Open Access: 11 results) Presentation (17 results) (of which Int'l Joint Research: 12 results,  Invited: 11 results) Book (1 results)

  • [Int'l Joint Research] National Taiwan University/Henan University(中国)

    • Country Name
      CHINA
    • Counterpart Institution
      National Taiwan University/Henan University
  • [Int'l Joint Research] GIST(韓国)

    • Country Name
      KOREA (REP. OF KOREA)
    • Counterpart Institution
      GIST
  • [Int'l Joint Research] Silesian University/Czech Technical University in Prague(チェコ)

    • Country Name
      CZECH
    • Counterpart Institution
      Silesian University/Czech Technical University in Prague
  • [Int'l Joint Research] UCSD(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      UCSD
  • [Journal Article] Stable Z-strings with topological polarization in two Higgs doublet model2022

    • Author(s)
      Eto Minoru、Hamada Yu、Nitta Muneto
    • Journal Title

      Journal of High Energy Physics

      Volume: 2022 Pages: 099

    • DOI

      10.1007/JHEP02(2022)099

    • Peer Reviewed / Open Access
  • [Journal Article] Chiral non-Abelian vortices and their confinement in three flavor dense QCD2021

    • Author(s)
      Eto Minoru、Nitta Muneto
    • Journal Title

      Physical Review D

      Volume: 104 Pages: 094052

    • DOI

      10.1103/PhysRevD.104.094052

    • Peer Reviewed / Open Access
  • [Journal Article] Standard model gauge fields localized on non-Abelian vortices in six dimensions2021

    • Author(s)
      Arai Masato、Blaschke Filip、Eto Minoru、Kawaguchi Masaki、Sakai Norisuke
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2021 Pages: 123B07

    • DOI

      10.1093/ptep/ptab144

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The moduli space of non-abelian vortices in Yang?Mills?Chern?Simons?Higgs theory2021

    • Author(s)
      Gudnason Sven Bjarke、Eto Minoru
    • Journal Title

      Journal of Physics A: Mathematical and Theoretical

      Volume: 54 Pages: 425402~425402

    • DOI

      10.1088/1751-8121/ac254b

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Topological axion electrodynamics and 4-group symmetry2021

    • Author(s)
      Hidaka Yoshimasa、Nitta Muneto、Yokokura Ryo
    • Journal Title

      Physics Letters B

      Volume: 823 Pages: 136762~136762

    • DOI

      10.1016/j.physletb.2021.136762

    • Peer Reviewed / Open Access
  • [Journal Article] Global 4-group symmetry and ’t Hooft anomalies in topological axion electrodynamics2021

    • Author(s)
      Hidaka Yoshimasa、Nitta Muneto、Yokokura Ryo
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: ptab150 Pages: 1-32

    • DOI

      10.1093/ptep/ptab150

    • Peer Reviewed / Open Access
  • [Journal Article] Nuclear binding energy in holographic QCD2021

    • Author(s)
      Hashimoto Koji、Matsuo Yoshinori
    • Journal Title

      Physical Review D

      Volume: 104 Pages: 026006

    • DOI

      10.1103/PhysRevD.104.026006

    • Peer Reviewed / Open Access
  • [Journal Article] Distance between collapsing matter and apparent horizon in evaporating black holes2021

    • Author(s)
      Ho Pei-Ming、Matsuo Yoshinori、Yokokura Yuki
    • Journal Title

      Physical Review D

      Volume: 104 Pages: 064005

    • DOI

      10.1103/PhysRevD.104.064005

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Building bulk from Wilson loops2021

    • Author(s)
      Hashimoto Koji
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2021 Pages: 023B04

    • DOI

      10.1093/ptep/ptaa183

    • Peer Reviewed / Open Access
  • [Journal Article] Neural ordinary differential equation and holographic quantum chromodynamics2021

    • Author(s)
      Hashimoto Koji、Hu Hong-Ye、You Yi-Zhuang
    • Journal Title

      Machine Learning: Science and Technology

      Volume: 2 Pages: 035011~035011

    • DOI

      10.1088/2632-2153/abe527

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Bulk reconstruction of metrics inside black holes by complexity2021

    • Author(s)
      Hashimoto Koji、Watanabe Ryota
    • Journal Title

      Journal of High Energy Physics

      Volume: 2021 Pages: 15

    • DOI

      10.1007/JHEP09(2021)165

    • Peer Reviewed / Open Access
  • [Presentation] Entanglement entropy and vacuum states in Schwarzschild geometry2022

    • Author(s)
      松尾善典
    • Organizer
      日本物理学会 第77回年次大会
  • [Presentation] Chaos Energy Bound2022

    • Author(s)
      Koji Hashimoto
    • Organizer
      International workshop "Future trends in gravitational physics"
    • Int'l Joint Research / Invited
  • [Presentation] Chaos Energy Bound2022

    • Author(s)
      Koji Hashimoto
    • Organizer
      international workshop Sogan University CQuest
    • Int'l Joint Research / Invited
  • [Presentation] SU(2) chiral soliton lattice from chiral vortical effect2021

    • Author(s)
      衛藤稔, 西村健太郎, 新田宗土
    • Organizer
      日本物理学会 2021年秋季大会
  • [Presentation] Radiolaria: Topological planktons?2021

    • Author(s)
      Minoru Eto
    • Organizer
      International Conference on Discrete Geometric Analysis for Materials Design
    • Int'l Joint Research / Invited
  • [Presentation] Generalized global symmetry and its application2021

    • Author(s)
      日高義将
    • Organizer
      基研研究会 素粒子物理学の進展2021
    • Invited
  • [Presentation] Higher group symmetry and axion electrodynamics2021

    • Author(s)
      Yoshimasa Hidaka
    • Organizer
      The 21st International Conference on Discrete Geometric Analysis for Materials Design
    • Int'l Joint Research / Invited
  • [Presentation] Islands and vacuum states2021

    • Author(s)
      Yoshinori Matsuo
    • Organizer
      YITP workshop "Strings and Fields 2021"
    • Int'l Joint Research
  • [Presentation] Nuclear binding energy in holographic QCD2021

    • Author(s)
      橋本幸士, 松尾善典
    • Organizer
      日本物理学会 2021年秋季大会
  • [Presentation] Higher-order topology from 5D Weyl semimetals2021

    • Author(s)
      Yoshinori Matsuo
    • Organizer
      The 21st International Conference on Discrete Geometric Analysis for Materials Design
    • Int'l Joint Research / Invited
  • [Presentation] Entanglement entropy in Schwarzschild spacetime2021

    • Author(s)
      Yoshinori Matsuo
    • Organizer
      East Asia Joint Symposium on Fields and Strings 2021
    • Int'l Joint Research
  • [Presentation] Entanglement entropy and vacuum states in Schwarzschild geometry2021

    • Author(s)
      Yoshinori Matsuo
    • Organizer
      KIAS-YITP Joint Workshop 2021 String Theory and Quantum Gravity
    • Int'l Joint Research
  • [Presentation] “Bulk reconstruction of metrics by QFT data”2021

    • Author(s)
      Koji Hashimoto
    • Organizer
      APCTP workshop “Holography 2021: Quantum Matter, Information, and Spacetime”
    • Int'l Joint Research / Invited
  • [Presentation] Deep learning and holographic QCD2021

    • Author(s)
      Koji Hashimoto
    • Organizer
      ECT* International Workshop "Machine learning for high energy physics: on and off the lattice"
    • Int'l Joint Research / Invited
  • [Presentation] "Deep Learning and Physics"2021

    • Author(s)
      橋本幸士
    • Organizer
      日本表面真空学会
    • Invited
  • [Presentation] Chaos Energy Bound2021

    • Author(s)
      Koji Hashimoto
    • Organizer
      International Workshop "Application of quantum information in QFT and cosmology"
    • Int'l Joint Research / Invited
  • [Presentation] Deep Learning and Holographic QCD2021

    • Author(s)
      Koji Hashimoto
    • Organizer
      International Workshop "String Data 2021"
    • Int'l Joint Research / Invited
  • [Book] Deep Learning and Physics2021

    • Author(s)
      Koji Hashimoto, Akinori Tanaka, Akio Tomiya
    • Total Pages
      207
    • Publisher
      Springer
    • ISBN
      978-981-33-6108-9

URL: 

Published: 2022-12-28  

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