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2013 Fiscal Year Annual Research Report

作用素環論と数理物理学の新たな展開

Research Project

Project/Area Number 23244016
Research InstitutionThe University of Tokyo

Principal Investigator

河東 泰之  東京大学, 数理(科)学研究科(研究院), 教授 (90214684)

Project Period (FY) 2011-04-01 – 2015-03-31
Keywords共形場理論 / 作用素環論 / 数理物理学 / 部分因子環 / 境界共形場理論 / 頂点作用素代数
Outline of Annual Research Achievements

Bischoff, Longo, Rehren と共に conformal field theory における phase boundary, topological defect の研究を作用素環の立場から行った. 代数的場の量子論における phase boundary の定義を行い,その基本的性質を研究した.特に,二つの Q-system の braided product の既約分解によってすべての phase boundary が生じることを 示した.また,full center から生じる Rehren 型のQ-systemの場合については,各 phase boundary は二つの Q-system の間の bimodule として 表させることを示した.
さらに Bischoff, Longo, Rehren と共に,factoriality を仮定しない Q-system の一般論を整備した.
また,Carpi, Longo, Weiner と共に,頂点作用素代数から局所共形ネットを作る方法について研究した.特に,頂点作用素代数がユニタリ性と強局所性を持つ場合には,局所共形ネットが作れ,その局所共形ネットから元の頂点作用素代数を復元できることを示した.また,強局所背員が成り立つための使いやすい十分条件を与えた.これによって,これまでに知られていた多くの例を統一的に扱うことができ,また baby Monsterを自己同型に持つ頂点作用素代数に対応する局所共形ネットも構成できた.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

境界共形場理論については当初の計画通り,順調に研究が進んでいる.
また,頂点作用素代数と局所共形ネットの関連については長年の懸案を予定通りの形で解決した.

Strategy for Future Research Activity

今後もこれまで通りの方針で,作用素環を用いた共形場理論の研究を続ける.

  • Research Products

    (15 results)

All 2015 2014 Other

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Acknowledgement Compliant: 3 results) Presentation (10 results) (of which Invited: 10 results) Book (1 results) Remarks (1 results)

  • [Journal Article] N=2 superconformal nets2015

    • Author(s)
      S. Carpi, R. Hillier, Y. Kawahigashi, R. Longo, F. Xu
    • Journal Title

      Commun. Math. Phys.

      Volume: 336 Pages: 1285-1328

    • DOI

      10.1007/s00220-014-2234-3

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Construction of holomorphic local conformal framed net2014

    • Author(s)
      Y. Kawahigashi, N. Suthichitranont
    • Journal Title

      Internat. Math. Res. Notices

      Volume: 2014 Pages: 2924-2943

    • DOI

      10.1093/imrn/rnt020

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Normal states of type III factors2014

    • Author(s)
      Y. Kawahigashi, Y. Ogata, E. Størmer
    • Journal Title

      Pacific J. Math.

      Volume: 267 Pages: 131-139

    • DOI

      10.2140/pjm.2014.267.131

    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Boundary conformal field theory and subfactors2015

    • Author(s)
      Y. Kawahigashi
    • Organizer
      4th Conference of Settat on Operator Algebras and Applications
    • Place of Presentation
      Marrakech, Morocco
    • Year and Date
      2015-01-27 – 2015-01-30
    • Invited
  • [Presentation] Boundary conformal field theory and operator algebras2015

    • Author(s)
      Y. Kawahigashi
    • Organizer
      RIKKYO MathPhys 2015 --- Gauge Theory, CFT and Integrability ---
    • Place of Presentation
      立教大学
    • Year and Date
      2015-01-10 – 2015-01-12
    • Invited
  • [Presentation] Full and boundary conformal field theories and subfactors2014

    • Author(s)
      Y. Kawahigashi
    • Organizer
      Operator and Geometric Analysis on Quantum Theory
    • Place of Presentation
      Levico Terme, Italy
    • Year and Date
      2014-09-15 – 2014-09-19
    • Invited
  • [Presentation] Boundary conformal field theory and subfactors2014

    • Author(s)
      Y. Kawahigashi
    • Organizer
      ICM Satellite Conference on Operator Algebras and Applications
    • Place of Presentation
      Cheongpung, Korea
    • Year and Date
      2014-08-08 – 2014-08-12
    • Invited
  • [Presentation] Subfactos and phase boundaries in conformal field theory2014

    • Author(s)
      Y. Kawahigashi
    • Organizer
      Subfactor Theory in Mathematics and Physics
    • Place of Presentation
      Maui, U.S.A.
    • Year and Date
      2014-07-14 – 2014-07-18
    • Invited
  • [Presentation] Subfactors, tensor categories and boundary conformal field theory2014

    • Author(s)
      Y. Kawahigashi
    • Organizer
      16th Workshop: Non-commutative harmonic analysis
    • Place of Presentation
      Bedlewo, Poland
    • Year and Date
      2014-07-06 – 2014-07-12
    • Invited
  • [Presentation] Boundary conformal field theory and subfactors2014

    • Author(s)
      Y. Kawahigashi
    • Organizer
      25th International Conference on Operator Theory
    • Place of Presentation
      Timisoara, Romania
    • Year and Date
      2014-06-30 – 2014-07-05
    • Invited
  • [Presentation] Full and boundary conformal field theory from operator algebras2014

    • Author(s)
      Y. Kawahigashi
    • Organizer
      Operator Algebras and Mathematical Physics
    • Place of Presentation
      Daliang, China
    • Year and Date
      2014-06-13 – 2014-06-18
    • Invited
  • [Presentation] Boundary conformal field theory, subfactors and tensor categories2014

    • Author(s)
      Y. Kawahigashi
    • Organizer
      NCGOA Spring Institute 2014: Subfactors, CFT, and VOA
    • Place of Presentation
      Nashville, U.S.A.
    • Year and Date
      2014-05-02 – 2014-05-08
    • Invited
  • [Presentation] Full conformal field theories, tensor categories and subfactors2014

    • Author(s)
      Y. Kawahigashi
    • Organizer
      Subfactors and Fusion Categories
    • Place of Presentation
      Banff, Canada
    • Year and Date
      2014-04-13 – 2014-04-18
    • Invited
  • [Book] Tensor categories and endomorphisms of von Neumann algebras (with applications to Quantum Field Theory)2015

    • Author(s)
      M. Bischoff, Y. Kawahigashi, R. Longo, K.-H. Rehren
    • Total Pages
      94
    • Publisher
      Springer Verlag
  • [Remarks] 河東泰之

    • URL

      http://www.ms.u-tokyo.ac.jp/~yasuyuki/index.html

URL: 

Published: 2016-06-01  

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