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Exotic properties of superstring theory from curved space-time and space-time with boundary

Research Project

Project/Area Number 15K05054
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionOsaka University

Principal Investigator

Yamaguchi Satoshi  大阪大学, 理学研究科, 准教授 (90570672)

Project Period (FY) 2015-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords場の理論 / 対称性 / アノマリー / 指数定理 / 弦理論 / 共形場理論 / 境界 / 欠陥 / 超対称性
Outline of Final Research Achievements

I studied quantum field theories on curved backgrounds, space-time with boundaries, or defects to understand the properties of such field theories. I applied a new method recently developed for conformal field theories with defects, and showed that the method is useful even in the presence of defects. We also studied the APS index theorem, which is a mathematical theorem on spaces with boundaries, and proved a new theorem that makes sense as mathematics. I also applied these results to the analysis of strongly coupled gauge theories, and discovered new exotic phases that were not known before. We also studied fracton phases, a recent hot topic, and obtained various results.

Academic Significance and Societal Importance of the Research Achievements

我々の世界は、どのような法則で記述されるのか、というのが物理学が問いかけてきた疑問です。素粒子の理論を記述するための「場の理論」や重力を含む「超弦理論」は、そのような理論であると考えられています。しかし、これらの理論はその大部分が完全には解けません。したがって、これらが本当に我々の世界を記述しているか確かめるためには、解けないものの性質をなんとかして調べる必要があるわけです。我々の研究は、その手法として曲がった時空や境界、defectなどを考えるという手段を用いて調べました。成果として、解析に必要な数学の定理を発見したり、従来の方法では分からなかったような場の理論の性質が分かったりしました。

Report

(7 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (21 results)

All 2021 2020 2019 2018 2017 2016 2015

All Journal Article (10 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 10 results,  Open Access: 8 results,  Acknowledgement Compliant: 1 results) Presentation (11 results) (of which Int'l Joint Research: 9 results,  Invited: 6 results)

  • [Journal Article] Supersymmetric quantum field theory with exotic symmetry in 3+1 dimensions and fermionic fracton phases2021

    • Author(s)
      Satoshi Yamaguchi
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 未定

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Atiyah-Patodi-Singer index on a lattice2020

    • Author(s)
      Hidenori Fukaya, Naoki Kawai, Yoshiyuki Matsuki, Makito Mori, Katsumasa Nakayama, Tetsuya Onogi, Satoshi Yamaguchi
    • Journal Title

      PTEP

      Volume: 4 Issue: 4 Pages: 1-11

    • DOI

      10.1093/ptep/ptaa031

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Atiyah-Patodi-Singer Index and Domain-Wall Fermion Dirac Operators2020

    • Author(s)
      H. Fukaya, M. Furuta, S. Matsuo, T. Onogi, S. Yamaguchi and M. Yamashita
    • Journal Title

      Communicatios in Mathematical Physics

      Volume: 380 Issue: 3 Pages: 1295-1311

    • DOI

      10.1007/s00220-020-03806-0

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Thouless-Kohmoto-Nightingale-den Nijs formula for a general Hamiltonian2020

    • Author(s)
      Fukaya Hidenori、Onogi Tetsuya、Yamaguchi Satoshi、Wu Xi
    • Journal Title

      Physical Review D

      Volume: 101 Issue: 7 Pages: 1-14

    • DOI

      10.1103/physrevd.101.074507

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Atiyah-Patodi-Singer index and domain-wall fermion Dirac operators2020

    • Author(s)
      H. Fukaya, M. Furuta, S. Matsuo, T. Onogi, S. Yamaguchi, M. Yamashita
    • Journal Title

      Communications in Mathematical Physics

      Volume: -

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Atiyah-Patodi-Singer index on a lattice2020

    • Author(s)
      Hidenori Fukaya, Naoki Kawai, Yoshiyuki Matsuki, Makito Mori, Katsumasa Nakayama
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: -

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] ’t Hooft anomaly matching condition and chiral symmetry breaking without bilinear condensate2019

    • Author(s)
      Yamaguchi Satoshi
    • Journal Title

      Journal of High Energy Physics

      Volume: 2019 Issue: 1

    • DOI

      10.1007/jhep01(2019)014

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mixed global anomalies and boundary conformal field theories2018

    • Author(s)
      Numasawa Tokiro、Yamaguch Satoshi
    • Journal Title

      Journal of High Energy Physics

      Volume: 2018 Issue: 11 Pages: 1-26

    • DOI

      10.1007/jhep11(2018)202

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Atiyah-Patodi-Singer index from the domain-wall fermion Dirac operator2017

    • Author(s)
      Fukaya Hidenori、Onogi Tetsuya、Yamaguchi Satoshi
    • Journal Title

      Physical Review D

      Volume: 96 Issue: 12 Pages: 1-22

    • DOI

      10.1103/physrevd.96.125004

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] The $\epsilon$-expansion of the codimension two twist defect from conformal field theory2016

    • Author(s)
      Satoshi Yamaguchi
    • Journal Title

      Prog. Theor. Exp. Phys.

      Volume: 2016, 091B01 Issue: 9 Pages: 091B01-091B01

    • DOI

      10.1093/ptep/ptw115

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Atiyah-Patodi-Singer index from the domain-wall Dirac operator2021

    • Author(s)
      Satoshi Yamaguchi
    • Organizer
      Rikkyo MathPhys 2021
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ゲージ理論におけるフェルミオン4次の演算子の凝縮について2019

    • Author(s)
      山口哲
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Atiyah-Patodi-Singer index from the domain-wall Dirac operator2019

    • Author(s)
      Satoshi Yamaguchi
    • Organizer
      Mini-workshop on Symmetry and Interactions
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Defects in Conformal Field Theory2019

    • Author(s)
      Satoshi Yamaguchi
    • Organizer
      Quantum Math
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 't Hooft アノマリー整合条件とフェルミオン双線形凝縮のないカイラル対称性の破れ2019

    • Author(s)
      山口 哲
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Atiyah-Patodi-Singer index from the domain-wall fermion Dirac operator2018

    • Author(s)
      Satoshi Yamaguchi
    • Organizer
      Strings 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Codimension two twist defects in Wilson-Fisher theories2017

    • Author(s)
      Satoshi Yamaguchi
    • Organizer
      Progress in Quantum Field Theory and String Theory II
    • Place of Presentation
      大阪市立大学
    • Year and Date
      2017-03-27
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Codimension 2 twist defects in Wilson-Fisher theories2017

    • Author(s)
      Satoshi Yamaguchi
    • Organizer
      Holography, Quantum Entanglement and Higher Spin Gravity
    • Place of Presentation
      基礎物理学研究所
    • Year and Date
      2017-02-06
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Mixed global anomalies and boundary conformal field theories2017

    • Author(s)
      Satoshi Yamaguchi
    • Organizer
      Bootstrap Approach to Conformal Field Theories and Applications
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Two dimensional superconformal field theories from Riemann surfaces with Boundary2015

    • Author(s)
      Satoshi Yamaguchi
    • Organizer
      KIAS-YITP Joint Workshp, Geometry in Gauge Theories and String Theory
    • Place of Presentation
      KIAS, Seoul, Korea
    • Year and Date
      2015-09-15
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Two dimensional superconformal field theories from Riemann surfaces with Boundary2015

    • Author(s)
      Satoshi Yamaguchi
    • Organizer
      Strings 2015
    • Place of Presentation
      ICTS-TIFR, Bengaluru, India
    • Year and Date
      2015-06-22
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research

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Published: 2015-04-16   Modified: 2022-01-27  

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