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Infinite dimensional analysis by stochastic methods and their application to quantum field theory

Research Project

Project/Area Number 16H03942
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Basic analysis
Research InstitutionKyushu University

Principal Investigator

廣島 文生  九州大学, 数理学研究院, 教授 (00330358)

Co-Investigator(Kenkyū-buntansha) 宮尾 忠宏  北海道大学, 理学研究院, 准教授 (20554421)
Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Granted (Fiscal Year 2019)
Budget Amount *help
¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
Fiscal Year 2019: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2018: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2016: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Keywords基底状態 / 汎関数積分 / くりこみ / 場の量子論 / Gibbs測度 / ギブス測度 / 準古典近似 / ファインマン・カッツ公式 / スペクトル解析 / 自己共役作用素 / 熱半群 / 経路積分 / くりこみ理論 / ファインマンカッツ公式 / ローレンツ多様体
Outline of Annual Research Achievements

研究計画調書にある研究計画は以下であった.
(A. ラフパス理論によるGibbs測度の構成と応用) (1) UV をくりこんだGibbs測度, また2重確率積分を備えたGibbs 測度の構成.(2)ラフパス理論を用いた基底状態の解析.(3)基底状態が非存在のときやUV を外したGibbs測度を構成する.(B. 基底状態の研究)(1) 特異性の高いハミルトニアンの基底状態の存在を非摂動的に示す. (2) 基底状態の空間的指数減衰性の下からの評価を与える. (C. 確率解析的UVくりこみ理論)(1) 非局所的な運動項をもったハミルトニアンの確率解析的UVくりこみ理論の構築. (2) Bernstein関数による一般化. (D. 多様体上の場の量子論の研究) 時間的に安定な$3+1$次元 ローレンツ多様体上に定義したNelson 模型のスペクトルと多様体の局所的な性質の関係を明らかにする. (E. 場の量子論におけるSDEと古典極限の研究)(1) 古典極限によってウイグナー測度を導く.(2)非局所的な模型に付随したSDEを構成する.

H28,29年度は(A1),(A2),(B1),(C1)で研究が進んだ. H30年度は(A1)(B1)でOliver Matte教授(Aalborg大学)と共同で大きな進展があり論文にまとめた. そこでは基底状態の存在・非存在とギブス測度の存在および局所性を非摂動的に示すことができた. 非局所的な模型(semi-relativistic PF模型)のスペクトル解析も佐々木教授(信州大学)と研究が進み論文にまとめた. (E1)ではZied Ammari教授(RennesI大学)と研究成果をまとめ論文を書き始めた.(B2)に関しては下からの評価ではないが上からの各点(pointwise)での評価を得ることができ, 査読付き論文として出版した.

Current Status of Research Progress
Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

(A1)(B1)に関してはOliver Matte 教授と共同でH29年度に大きな進展があった. H30年度に一年かけて論文にまとめ国際誌に投稿した (arXiv:1903.12024 Ground states and associated path measures in the renormalized Nelson model). 内容は, くりこんだNelsonハミルトニアンの基底状態の存在・非存在とギブス測度の存在を示し、さらに基底状態の空間、ボゾン粒子数、場の変数に関する局所性を示した。これらの結果は当初の予想を大きく超えている.

(E1)に関してはH29年度に具体的な模型に関して計算が進んだが, H30年度は. Zied Ammari教授と抽象的一般的な場合まで研究が進み現在論文執筆中である.

(C1に関しては)非局所的な模型(semi-relativistic PF模型)のスペクトル解析が進んだ(arXiv:1609.07651 Spectrum of the semi-relativistic Pauli-Fierz model II). 特に基底状態の証明で使われる従来のコンパクト性の議論を大幅に改良して一般化できた. 現在論文を校正中である.

Strategy for Future Research Activity

(1) (E1)の結果を一般化する. Zied Ammari教授の所属するRennes大学に滞在する.
(2) (A1)の確率2重積分の問題, (B2)の下からの減衰性の問題に取り組む.
(3) (A1)をOliver Matte教授と取り組む中で並行移動不変な切断のないNelson模型の解析のアイデアが浮上した. それに取り組む.
(4) (C1)に取り組む.

Report

(3 results)
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report

Research Products

(45 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research Journal Article Presentation Book Remarks Funded Workshop

  • [Int'l Joint Research] Aalborg 大学(デンマーク)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Rennes I 大学(フランス)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Tuebingen 大学(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Samarkand State大学(ウズベキスタン)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Nilai 大学(マレーシア)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Aarhus大学(デンマーク)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Loughborough大学(英国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Nilai 大学(マレーシア)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Tunis 大学(チュニジア)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Aarhus大学(デンマーク)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Point-wise exponential decay of bound states of the Nelson model with Kato-class potentials2019

    • Author(s)
      Fumio Hiroshima
    • Journal Title

      ANALYSIS AND OPERATOR THEORY - In Honor of Tosio Kato's 100 th Birthday, Springer

      Volume: 1

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Thresholds and resonances of Schroedinger operators on a lattice2018

    • Author(s)
      廣島文生
    • Journal Title

      RIMS講究録 (量子場の数理とその周辺)

      Volume: 2089 Pages: 146-155

    • Related Report
      2018 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Renormalized Nelson model2018

    • Author(s)
      廣島文生
    • Journal Title

      RIMS講究録 (Tosio Kato Centennial Conference)

      Volume: 2074 Pages: 14-34

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Kato's inequality for magnetic relativistic Schroedinger operators,2017

    • Author(s)
      F. Hiroshima,T.Ichinose and J.Lorinczi
    • Journal Title

      Publ RIMS Kyoto

      Volume: 53 Pages: 79-117

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Mass renormalization in the Nelson model2017

    • Author(s)
      F. Hiroshima,S.Osawa
    • Journal Title

      Int.J.Math and Math.Sci.

      Volume: 4760105

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ultra-weak time operators of Schroedinger operators2017

    • Author(s)
      A. Arai and F. Hiroshima
    • Journal Title

      Ann. Henri Poincare

      Volume: 18 Pages: 2995-3033

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] P(\phi)_1-process for the spin-boson model and a functional central limit theorem for associated additive functionals2017

    • Author(s)
      S.Gheryani, F.Hiroshima, J. Lorinczi, A.Majid and H. Ouerdiane
    • Journal Title

      Stochastics

      Volume: 89 Pages: 1104-1115

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Ultra-Weak Time Operators of Schroedinger Operators2017

    • Author(s)
      A.Arai and F.Hiroshima
    • Journal Title

      Annales Henri Poincare

      Volume: 印刷中

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Kato's Inequality for Magnetic Relativistic Schroedinger Operators2017

    • Author(s)
      F. Hiroshima, T. Ichinose and J. Lorinczi
    • Journal Title

      Publ RIMS Kyoto

      Volume: 印刷中

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Mass Renormalization in the Nelson Model2017

    • Author(s)
      F.Hiroshima and S.Osawa
    • Journal Title

      International Journal of Mathematics and Mathematical Sciences

      Volume: 印刷中

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Spectrum of semi-relativistic Pauli-Fierz Hamiltonian I2016

    • Author(s)
      T. Hidaka and F. Hiroshima
    • Journal Title

      J.Math.Anal.Appl.

      Volume: 437 Pages: 330-349

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] くりこまれたnelsonハミルトニアンの基底状態の存在・非存在・局所性について2019

    • Author(s)
      廣島文生
    • Organizer
      日本数学会関数解析分科会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Rabi model and spin-boson model2018

    • Author(s)
      Fumio Hiroshima
    • Organizer
      QM2018, USA
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Integral kernels of semigroup generated by a model in quantum field theory2018

    • Author(s)
      Fumio Hiroshima
    • Organizer
      18th Workshop: Noncommutative Probability, Operator Algebras, Random Matrices and Related Topics, with Applications, Bedlewo, Poland
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Hierarchy of CCR representations2018

    • Author(s)
      Fumio Hiroshima
    • Organizer
      Aarhus university, Math Phys Conference, Denmark
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Renormalized Gibbs measures associated with the Nelson model2018

    • Author(s)
      廣島文生
    • Organizer
      日本数学会 関数解析分科会
    • Related Report
      2017 Annual Research Report
  • [Presentation] UV renormalization2017

    • Author(s)
      F.Hiroshima
    • Organizer
      Physical and mathematical approaches to interacting particle systems ---In honer of 70th birthday of Herbert Spohn---
    • Place of Presentation
      東工大
    • Year and Date
      2017-01-11
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Schroedinger operators on lattice2017

    • Author(s)
      Fumio Hiroshima
    • Organizer
      Second Summer School: Various aspects of mathematical physics, St Peterburg,Russia
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analysis of a scalar field model without ultraviolet cutoff by path measures2017

    • Author(s)
      廣島文生
    • Organizer
      T.Kato 生誕100年記念国際研究集会
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 正準交換関係の階層性2017

    • Author(s)
      廣島文生
    • Organizer
      文部科学省委託事業「数学アドバンストイノベーションプラットフォーム」キックオフミーティング
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Analysis of time operators2017

    • Author(s)
      F.Hiroshima
    • Organizer
      La Sapienza Univ. Math. Phys. seminar
    • Place of Presentation
      La Sapienza univ. Italy
    • Related Report
      2016 Annual Research Report
  • [Presentation] Feynman-Kac formula and its application to quantum physics2017

    • Author(s)
      F.Hiroshima
    • Organizer
      Journee Thematique EDP: Mathematical Analysis of Interacting Quantum Systems
    • Place of Presentation
      Rennes univ. France
    • Related Report
      2016 Annual Research Report
  • [Presentation] Construction of time operators associated with Schroedinger operators2016

    • Author(s)
      F.Hiroshima
    • Organizer
      PNU Math forum
    • Place of Presentation
      Pusan univ. Korea
    • Year and Date
      2016-12-01
    • Related Report
      2016 Annual Research Report
  • [Presentation] Time operator associated with Schroedinger operators2016

    • Author(s)
      F.Hiroshima
    • Organizer
      International Workshop on Ultra-Strong Light-Matter Interactions: theory and applications to quantum information
    • Place of Presentation
      Bilbao, スペイン
    • Year and Date
      2016-09-19
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Semi-relativistic QED2016

    • Author(s)
      F.Hiroshima
    • Organizer
      量子場の数理とその周辺
    • Place of Presentation
      九大,IMI共同利用
    • Year and Date
      2016-06-06
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spin boson model and Rabi model2016

    • Author(s)
      F.Hiroshima
    • Organizer
      Aarhus Univ. Mat/Fys-seminar
    • Place of Presentation
      Aarhus Univ.デンマーク
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Book] Feynman-Kac-Type Theorems and Gibbs Measures on Path Space, Feynman-Kac-Type Formulae and Gibbs Measures, 2nd Edition,Volume 12019

    • Author(s)
      V. Betz, F.Hiroshima and J. Lorinczi
    • Total Pages
      500
    • Publisher
      Walter de Gruyter
    • Related Report
      2018 Annual Research Report
  • [Book] Feynman-Kac-Type Theorems and Gibbs Measures on Path Space, Feynman-Kac-Type Formulae and Gibbs Measures, 2nd Edition,Volume 22019

    • Author(s)
      F.Hiroshima and J. Lorinczi
    • Total Pages
      500
    • Publisher
      Walter de Gruyter
    • Related Report
      2018 Annual Research Report
  • [Book] Ground States of Quantum Field Models2019

    • Author(s)
      F.Hiroshima
    • Total Pages
      144
    • Publisher
      Springer
    • Related Report
      2018 Annual Research Report
  • [Book] 量子場の数理2016

    • Author(s)
      新井朝雄、河東泰之、原隆、廣島文生
    • Total Pages
      320
    • Publisher
      数学書房
    • Related Report
      2016 Annual Research Report
  • [Remarks]

    • URL

      http://www2.math.kyushu-u.ac.jp/~hiroshima/ronbun.html

    • Related Report
      2018 Annual Research Report
  • [Remarks]

    • URL

      http://www2.math.kyushu-u.ac.jp/~hiroshima/

    • Related Report
      2017 Annual Research Report
  • [Remarks]

    • URL

      http://www2.math.kyushu-u.ac.jp/~hiroshima/index.html

    • Related Report
      2016 Annual Research Report
  • [Funded Workshop] 量子場の数理とその周辺(RIMS共同研究・公開型)2018

    • Related Report
      2018 Annual Research Report
  • [Funded Workshop] 量子場の数理とその周辺2016

    • Place of Presentation
      九州大学マスフォアインダストリ研究所
    • Year and Date
      2016-06-06
    • Related Report
      2016 Annual Research Report

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Published: 2016-04-21   Modified: 2019-12-27  

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