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2018 Fiscal Year Annual Research Report

解析学に基づくアインシュタイン方程式の総合研究

Research Project

Project/Area Number 16H03940
Research InstitutionYamagata University

Principal Investigator

中村 誠  山形大学, 理学部, 教授 (70312634)

Co-Investigator(Kenkyū-buntansha) 杉本 充  名古屋大学, 多元数理科学研究科, 教授 (60196756)
和田出 秀光  金沢大学, 機械工学系, 准教授 (00466525)
竹田 寛志  福岡工業大学, 工学部, 准教授 (10589237)
Project Period (FY) 2016-04-01 – 2021-03-31
Keywords一様等方計量 / 偏微分方程式論 / 初期値問題 / 漸近挙動
Outline of Annual Research Achievements

アインシュタイン方程式を満たす一様等方計量が表す膨張・収縮する空間において、非線形の波動方程式と分散型方程式を導出し、そのエネルギー評価と初期値問題の適切性理論の構築を通して、空間変動の特徴と効果の解明に取り組んだ。エネルギー評価においては消散項に着目し、空間膨張が消散効果をどのように引き起こすかの解明に取り組んだ。初期値問題においては、方程式の解の存在における非線形指数と計量の関係を明らかにした。また、方程式の解の漸近挙動が空間変動により、どのような影響を受けるかを考察した。方程式の導出において、ラグランジュ形式と非相対論的極限に基づいた系統的な手法を用いることで非線形波動・分散型方程式の統一的な導出方法の構成に取り組んだ。 半線形波動方程式と半線形分散型方程式の初期値問題における一様等方計量の効果の基本的な性質を明らかにするために、変数係数の波動方程式と分散型方程式に対する線形評価を考察した。この線形評価において、空間の膨張が消散効果を生み出すことを定式化して明らかにした。非線形評価に関して、エネルギー評価に基づく実解析的評価を構成し、線形評価と非線形評価を組み合わせることで初期値問題の適切性理論の構築に取り組んだ。また、ド・ジッター空間における半線形拡散方程式の漸近挙動について解析した。本研究の成果を論文として投稿し、研究経過を国際研究集会と国内研究集会において発表した。また、相対論に係る数学的研究を行っている海外研究者と国内研究者を招聘して研究集会を開催し、関連研究を調査すると共に、研究討論によって本研究課題の進展を図った。

Current Status of Research Progress
Current Status of Research Progress

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

Reason

当初計画に沿って進展している。

Strategy for Future Research Activity

今後も計画に沿って研究を進める。

  • Research Products

    (39 results)

All 2019 2018 Other

All Int'l Joint Research (4 results) Journal Article (12 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 11 results) Presentation (19 results) (of which Int'l Joint Research: 13 results,  Invited: 17 results) Funded Workshop (4 results)

  • [Int'l Joint Research] The University of Texas(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      The University of Texas
  • [Int'l Joint Research] Stanford University(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      Stanford University
  • [Int'l Joint Research] Peking University(中国)

    • Country Name
      CHINA
    • Counterpart Institution
      Peking University
  • [Int'l Joint Research] Zhejiang University(中国)

    • Country Name
      CHINA
    • Counterpart Institution
      Zhejiang University
  • [Journal Article] A local-to-global boundedness argument and Fourier integral operators2019

    • Author(s)
      M. Ruzhansky and M. Sugimoto
    • Journal Title

      J. Math. Anal. Appl.

      Volume: 473 Pages: 892-904

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Existence and non-existence of maximizers for the Moser-Trudinger type inequalities under inhomogeneous constraints2019

    • Author(s)
      Norihisa Ikoma, Michinori Ishiwata, Hidemitsu Wadade
    • Journal Title

      Mathematische Annalen

      Volume: 373 Pages: 831-851

    • DOI

      10.1007/s00208-018-1709-5

    • Peer Reviewed
  • [Journal Article] Strichartz type estimates in mixed Besov spaces with application to critical nonlinear Schrdinger equations2019

    • Author(s)
      M. Nakamura, T. Wada
    • Journal Title

      Journal of Differential Equations

      Volume: 印刷中 Pages: -

    • Peer Reviewed
  • [Journal Article] Remarks on global solutions for the semilinear diffusion equation in the de Sitter spacetime2019

    • Author(s)
      M. Nakamura, Y. Sato
    • Journal Title

      Hokkaido Mathematical Journal

      Volume: 印刷中 Pages: -

    • Peer Reviewed
  • [Journal Article] The Cauchy problem for dissipative wave equations with weighted nonliner terms2019

    • Author(s)
      M. Nakamura, H. Wadade
    • Journal Title

      New Tools for Nonlinear PDEs and Application

      Volume: 印刷中 Pages: -

    • Peer Reviewed
  • [Journal Article] On the nonrelativistic limit of a semilinear field equation in a homogeneous and isotropic space2019

    • Author(s)
      M. Nakamura
    • Journal Title

      Kyoto Journal of Mathematics

      Volume: 印刷中 Pages: -

    • Peer Reviewed
  • [Journal Article] On the regularity of the semilinear term on the Cauchy problem for the Schroedinger equation2019

    • Author(s)
      M. Nakamura
    • Journal Title

      Proceedings of the 11th ISAAC congress 2017

      Volume: 印刷中 Pages: -

    • Peer Reviewed
  • [Journal Article] On the maximizing problem associated with Sobolev type embeddings under inhomogeneous constraints2019

    • Author(s)
      M. Ishiwata, H. Wadade
    • Journal Title

      Applicable Analysis

      Volume: 印刷中 Pages: -

    • DOI

      10.1080/00036811.2018.1491971

    • Peer Reviewed
  • [Journal Article] Asymptotic Profiles of Solutions for Structural Damped Wave Equations2019

    • Author(s)
      R. Ikehata, H. Takeda
    • Journal Title

      Journal of Dynamics and Differential Equation

      Volume: 31 Pages: 537-571

    • DOI

      10.1007/s10884-019-09731-8

    • Peer Reviewed
  • [Journal Article] Large time behavior of global solutions to nonlinear wave equations with frictional and viscoelastic damping terms2019

    • Author(s)
      R. Ikehata, H. Takeda
    • Journal Title

      Osaka Journal of Mathematics

      Volume: 印刷中 Pages: -

    • Peer Reviewed
  • [Journal Article] On the eects of spatial expansion and contraction on several semilinear partial dierential equations2018

    • Author(s)
      M. Nakamura
    • Journal Title

      京都大学数理解析研究所講究録 ”非線形波動・分散型方程式”

      Volume: 2093 Pages: 27-37

  • [Journal Article] Stability of trace theorems on the sphere2018

    • Author(s)
      N. Bez, C. Jeavons, T. Ozawa, and M. Sugimoto
    • Journal Title

      J. Geom. Anal.

      Volume: 28 Pages: 1456-1476

    • DOI

      10.1007/s12220-017-9870-8

    • Peer Reviewed
  • [Presentation] Remarks on a semilinear diffusion equation in homogeneous and isotropic spaces2019

    • Author(s)
      M. Nakamura
    • Organizer
      Top global university project, Waseda workshop on partial differential equations 2019
    • Int'l Joint Research / Invited
  • [Presentation] Global solutions for the semilinear diffusion equation in the de Sitter spacetime2019

    • Author(s)
      M. Nakamura
    • Organizer
      Nonlinear Dispersive Equations in Kumamoto, 2019
    • Invited
  • [Presentation] Partial dierential equations in uniform and isotropic spaces2019

    • Author(s)
      M. Nakamura
    • Organizer
      2018年度日本数学会東北支部会
    • Invited
  • [Presentation] Global solutions for a semilinear diusion equation in expanding or contracting spaces2019

    • Author(s)
      M. Nakamura, Y. Sato
    • Organizer
      日本数学会年会
  • [Presentation] On the Navier-Stokes equations in homogeneous and isotropic spacetimes with a constant density of mass2019

    • Author(s)
      M. Nakamura
    • Organizer
      日本数学会年会
  • [Presentation] Asymptotic expansion of solutions for wave equations with structural damping and its application2019

    • Author(s)
      H. Takeda
    • Organizer
      Waseda Workshop on Partial Differential Equations 2019
    • Int'l Joint Research / Invited
  • [Presentation] On some effects of background metrics for several partial diffential equations2018

    • Author(s)
      M. Nakamura
    • Organizer
      The 11th Mathematical Society of Japan, Seasonal Institute
    • Int'l Joint Research / Invited
  • [Presentation] On the dissipative effect of the spatial expansion for the semilinear diffusion equation2018

    • Author(s)
      M. Nakamura
    • Organizer
      East Asian Conference in Harmonic Analysis and its Applications 2018
    • Int'l Joint Research / Invited
  • [Presentation] On the Navier-Stokes equation and the elastic wave equations in uniform and isotropic spaces2018

    • Author(s)
      M. Nakamura
    • Organizer
      Wayamba International Conference
    • Int'l Joint Research / Invited
  • [Presentation] On the global solutions for the semi-linear diffusion equation in de Sitter spacetime2018

    • Author(s)
      M. Nakamura and Y. Sato
    • Organizer
      Wayamba International Conference
    • Int'l Joint Research / Invited
  • [Presentation] The Cauchy problem for Navier-Stokes equations in de Sitter spacetime2018

    • Author(s)
      M. Nakamura
    • Organizer
      Workshop on Mathematical Sciences
    • Int'l Joint Research / Invited
  • [Presentation] The asymptotic behavior of the semi-linear diffusion equation in de Sitter spacetime2018

    • Author(s)
      M. Nakamura and Y. Sato
    • Organizer
      Workshop on Mathematical Sciences
    • Int'l Joint Research / Invited
  • [Presentation] Spectral identities and smoothing estimates for evolution operators2018

    • Author(s)
      M. Sugimito
    • Organizer
      北京大学セミナー
    • Int'l Joint Research / Invited
  • [Presentation] Remarks on nonlinear operations on modulation spaces2018

    • Author(s)
      M. Sugimito
    • Organizer
      Harmonic analysis and the Navier-Stokes equations(早稲田大学)
    • Int'l Joint Research / Invited
  • [Presentation] Spectral identities and the comparison principle of smoothing estimates2018

    • Author(s)
      M. Sugimito
    • Organizer
      Modern problems of applied mathematics and information technologies(ウズベキスタン国立大)
    • Int'l Joint Research / Invited
  • [Presentation] Spectral identities and the comparison principle of smoothing estimates for evolution equations2018

    • Author(s)
      M. Sugimito
    • Organizer
      Partial Differential Equation and General Relativity(名古屋大学)
    • Int'l Joint Research / Invited
  • [Presentation] 抽象的シュレディンガー方程式の初期値問題における平滑化評価式とその比較原理について2018

    • Author(s)
      M. Sugimito
    • Organizer
      解析セミナー(愛媛大学)
    • Invited
  • [Presentation] Optimal trace theorems on the sphere2018

    • Author(s)
      M. Sugimito
    • Organizer
      The Legacy of Joseph Fourier after 250 years(中国・Tsinghua Sanya International Mathematics Forum)
    • Int'l Joint Research / Invited
  • [Presentation] 構造的消散項を持つ波動方程式の解の漸近展開とその応用について2018

    • Author(s)
      竹田寛志
    • Organizer
      熊本大学応用解析セミナー
    • Invited
  • [Funded Workshop] Lectures “A novel integral transform approach to PDEs in the curved space-times”2018

  • [Funded Workshop] Seminar “Analysis on Partial Differential Equations”2018

  • [Funded Workshop] 研究会“Partial Differential Equation and General Relativity” (Yamagata)2018

  • [Funded Workshop] 研究会“Partial Differential Equation and General Relativity” (Nagoya)2018

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Published: 2019-12-27  

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