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Operator algebras and Fukaya categories

Research Project

Project/Area Number 19K21832
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 12:Analysis, applied mathematics, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Kawahigashi Yasuyuki  東京大学, 大学院数理科学研究科, 教授 (90214684)

Project Period (FY) 2019-06-28 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords作用素環 / テンソル圏 / フュージョン圏 / 部分因子環 / 共形場理論 / テンソルネットワーク / 代数的場の量子論 / 位相的場の量子論 / 森田同値 / 深谷圏 / 場の量子論 / ミラーシンメトリー / 部分因子環論 / 頂点作用素代数
Outline of Research at the Start

本計画は2次元超共形場理論という物理理論を通じて,幾何学的な理論と関数解析的な理論を結び付けようとするものである.場の量子論は物理の大理論であり,ほとんどすべての数学と関係があるが,その中で特に2次元超共形場理論を考えると多くの異なる数学が有機的に結びつくことが知られている.本研究はその中で,新たに,これまで全く知られていない数学の分野間の結びつきを発見,解明することを目指している.

Outline of Final Research Achievements

We studied relations between subfactor theory in operator algebras and tensor categories. We have shown that 4-tensors appearing in 2-dimensional topological order in condensed matter physics are essentitally the same as bi-uninary connections which are well-studied in subfactor theory. We have further proved that the range of projector matrix product operator in physics setting is the same as the higher relative commutant of the subfactor arising from the 4-tensor. Moreover, we gave a characterization when a general 4-tensor is of the form considered in this setting.

Academic Significance and Societal Importance of the Research Achievements

最近注目を集めている2次元トポロジカル物性における数学的構造を圏論と作用素環論の立場から研究した.これによって数理物理学に現れる圏論の構造が,作用素環論における部分因子環の言葉で記述できることが分かった.特に2次元トポロジカル物性で研究されているテンソルネットワークに現れる 4-tensor と,作用素環論における部分因子環論で非退化な commuting square の記述に現れる bi-unitary connection とが実質的に同じであることを明らかにし,この関係を追究することによってこれまで知られていなかった部分因子環論との新たな関係を見出した.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (20 results)

All 2023 2022 2021 2020 Other

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (12 results) (of which Int'l Joint Research: 10 results,  Invited: 12 results) Remarks (1 results)

  • [Journal Article] Subfactors and mathematical physics2023

    • Author(s)
      D. E. Evans and Y. Kawahigashi
    • Journal Title

      Bull. Amer. Math. Soc.

      Volume: -

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A characterization of a finite-dimensional commuting square producing a subfactor of finite depth2023

    • Author(s)
      Y. Kawahigashi
    • Journal Title

      Internat. Math. Res. Notices

      Volume: -

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Projector matrix product operators, anyons and higher relative commutants of subfactors2023

    • Author(s)
      Y. Kawahigashi
    • Journal Title

      Math. Ann.

      Volume: -

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A characterization of a finite-dimensional commuting square producing a subfactor of finite depth2022

    • Author(s)
      Yasuyuki Kawahigashi
    • Journal Title

      Internat. Math. Research Notices

      Volume: -

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Two-dimensional topological order and operator algebras2021

    • Author(s)
      Y. Kawahigashi
    • Journal Title

      Internat. J. Modern Phys. B

      Volume: - Issue: 08 Pages: 2130003-2130003

    • DOI

      10.1142/s0217979221300036

    • Related Report
      2021 Research-status Report
  • [Journal Article] Two-dimensional topological order and operator algebras2021

    • Author(s)
      Yasuyuki Kawahigashi
    • Journal Title

      Internat. J. Modern Phys. B

      Volume: -

    • Related Report
      2020 Research-status Report
  • [Journal Article] A remark on matrix product operator algebras, anyons and subfactors2020

    • Author(s)
      Yasuyuki Kawahigashi
    • Journal Title

      Letters in Mathematical Physics

      Volume: -

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] A characterization of a finite-dimensional commuting square producing a subfactor of finite depth2022

    • Author(s)
      Y. Kawahigashi
    • Organizer
      Operator Algebras: Subfactors, K-theory, Conformal Field Theory
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A characterization of a finite-dimensional commuting square producing a subfactor of finite depth2022

    • Author(s)
      Y. Kawahigashi
    • Organizer
      Operator Theory 28
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A characterization of a finite-dimensional commuting square producing a subfactor of finite depth2022

    • Author(s)
      Y. Kawahigashi
    • Organizer
      New Frontiers: Interactions between Quantum Physics and Mathematics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A characterization of a finite-dimensional commuting square producing a subfactor of finite depth2022

    • Author(s)
      Y. Kawahigashi
    • Organizer
      Topological Quantum Groups, C*-Tensor Categories, and Subfactors
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Mathematics of topological phases of matter and operator algebras2022

    • Author(s)
      Y. Kawahigashi
    • Organizer
      Pan-Pacific Workshop on Topology and Correlation in Exotic Materials
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Tensor networks and operator algebras2022

    • Author(s)
      Yasuyuki Kawahigashi
    • Organizer
      Complex geometry and related topics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] トポロジカル量子コンピュータの理論と数学2021

    • Author(s)
      Yasuyuki Kawahigashi
    • Organizer
      トポロジカル科学の現在と未来
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Tensor networks, commuting squares and higher relative commutants of subfactors2021

    • Author(s)
      Yasuyuki Kawahigashi
    • Organizer
      作用素環論の最近の進展
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Tensor networks, commuting squares and higher relative commutants of subfactors2021

    • Author(s)
      Yasuyuki Kawahigashi
    • Organizer
      Subfactors, Vertex Operator Algebras, and Tensor Categories
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Topological order, tensor categories and operator algebras2021

    • Author(s)
      Yasuyuki Kawahigashi
    • Organizer
      MSJ-KMS Joint Meeting 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Tensor networks, commuting squares and higher relative commutants of subfactors2021

    • Author(s)
      Yasuyuki Kawahigashi
    • Organizer
      International Workshop on Operator Theory and its Applications
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Tensor networks, commuting squares and higher relative commutants of subfactors2021

    • Author(s)
      Yasuyuki Kawahigashi
    • Organizer
      Special Week on Operator Algebras 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Remarks] 河東泰之

    • URL

      https://www.ms.u-tokyo.ac.jp/~yasuyuki/

    • Related Report
      2021 Research-status Report

URL: 

Published: 2019-07-04   Modified: 2024-01-30  

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