• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2016 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)
Project Period (FY) 2016-04-01 – 2021-03-31
Keywords偏微分方程式 / 非線形 / アインシュタイン方程式 / 非線形場 / 初期値問題
Outline of Annual Research Achievements

本年度は、宇宙論における時空計量として非エルミート計量を考察し、計量と時空のガリレイ変換・回転変換・ローレンツ変換の間の関係について考察した。アインシュタインの重力場方程式の非エルミート計量および高次元空間への一般化に取り組み、宇宙原理の下で重力場方程式を満たす時空計量の導出を行った。宇宙論における宇宙項をダークエネルギーのモデルとして、完全流体のエネルギー・ストレステンソルを用いて時空計量を導出した。その時空における非線形場方程式の導出と、得られた方程式の初期値問題を考察し、空間の膨張と収縮がもたらす効果について偏微分方程式論を用いて研究した。非線形場方程式の非相対論的極限も考察した。また、次の研究も行った。尺度不変性の意味で臨界な相互作用を表す多項式型の非線形項を持つシュレディンガー方程式の初期値問題を考察した。初期値をソボレフ空間から与える場合、関数の正則性と非線形項のオーダーの関係を、方程式の構造から考えて最適となる条件の下で、時間大域解の存在について考察した。時間微分可能性も考慮したストリッカーツ評価の改良に取り組んだ。べき乗型で尺度不変な非線形項を持つシュレディンガー方程式の初期値問題を考察し、ソボレフ空間に属する初期値の高周波部分が十分小さければ初期値問題は時間大域解を持つことを示した。更に、Trudinger-Moser型の臨界指数関数型非線形項も考察し、初期値の高周波部分が小さければ時間局所解が得られることを示した。本研究の成果を論文として発表し、経過報告を国際研究集会と国内研究集会で発表するとともに、参加した研究者と研究動向・問題点・解決方法について研究討論を行った。

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

    (26 results)

All 2018 2017 2016 Other

All Int'l Joint Research (2 results) Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (17 results) (of which Int'l Joint Research: 9 results,  Invited: 9 results)

  • [Int'l Joint Research] TU Bergakademie Freiberg(Germany)

    • Country Name
      Germany
    • Counterpart Institution
      TU Bergakademie Freiberg
  • [Int'l Joint Research] Zhejiang University(China)

    • Country Name
      China
    • Counterpart Institution
      Zhejiang University
  • [Journal Article] Some effects of the spatial variance on the Cauchy problem for partial differential equations2018

    • Author(s)
      M. Nakamura
    • Journal Title

      RIMS Kokyuroku Bessatsu

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] On the existence time of local solutions for critical semilinear Schroedinger equations in Sobolev spaces2017

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

      Nonlinear Analysis: Real World Applications

      Volume: 33 Pages: 168-180

    • DOI

      10.1016/j.nonrwa.2016.06.009

    • Peer Reviewed
  • [Journal Article] Remarks on the Rellich inequality2017

    • Author(s)
      Shuji Machihara, Tohru Ozawa, Hidemitsu Wadade
    • Journal Title

      Mathematische Zeitschrift

      Volume: 印刷中 Pages: 印刷中

    • DOI

      10.1007/s00209-016-1805-8

    • Peer Reviewed
  • [Journal Article] Smoothing estimates for non-dispersive equations2016

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

      Math. Ann.

      Volume: 365 Pages: 241-269

    • DOI

      10.1007/s00208-015-1281-1

    • Peer Reviewed
  • [Journal Article] Extremisers for the trace theorem on the sphere2016

    • Author(s)
      N. Bez, S. Machihara, M. Sugimoto
    • Journal Title

      Math. Res. Lett.

      Volume: 23 Pages: 633-647

    • DOI

      10.4310/MRL.2016.v23.n3.a3

    • Peer Reviewed
  • [Journal Article] A survey on optimal smoothing estimates and trace theorems2016

    • Author(s)
      N. Bez, M. Sugimoto
    • Journal Title

      Adv. Math.

      Volume: 45 Pages: 801-816

    • Peer Reviewed
  • [Journal Article] On the effect of equivalent constraints on a maximizing problem associated with the Sobolev type embeddings in R^N2016

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

      Mathematische Annalen

      Volume: 364 Pages: 1043-1068

    • DOI

      10.1007/s00208-015-1243-7

    • Peer Reviewed
  • [Presentation] On the derivation of several second order partial differential equations from the Einstein equation2017

    • Author(s)
      M. Nakamura
    • Organizer
      日本数学会年会
    • Place of Presentation
      首都大学東京(東京都)
    • Year and Date
      2017-03-27 – 2017-03-27
  • [Presentation] On the nonrelativistic limit of a semilinear field equation in uniform and isotropic space2017

    • Author(s)
      M. Nakamura
    • Organizer
      日本数学会年会
    • Place of Presentation
      首都大学東京(東京都)
    • Year and Date
      2017-03-27 – 2017-03-27
  • [Presentation] Nonlinear field equations in the de Sitter spacetime and the Cauchy problem2017

    • Author(s)
      M. Nakamura
    • Organizer
      Seminar ``Phenomena and Differential Equations''
    • Place of Presentation
      山形大学(山形県)
    • Year and Date
      2017-03-21 – 2017-03-22
  • [Presentation] Complex Ginzburg-type equations with semilinear terms as the nonrelativistic limit of field equations2017

    • Author(s)
      M. Nakamura
    • Organizer
      Seminar ``Phenomena and Differential Equations''
    • Place of Presentation
      山形大学(山形県)
    • Year and Date
      2017-03-21 – 2017-03-22
  • [Presentation] On Klein-Gordon equations with power type and exponential type semilinear terms in moving spacetim2017

    • Author(s)
      M. Nakamura
    • Organizer
      研究会``Recent topics on Partial Differential Equations''
    • Place of Presentation
      山形大学(山形県)
    • Year and Date
      2017-03-09 – 2017-03-10
  • [Presentation] Dissipative effects of the cosmological constant on semilinear Schr\"odinger equations and parabolic equations2017

    • Author(s)
      M. Nakamura
    • Organizer
      研究会``Recent topics on Partial Differential Equations''
    • Place of Presentation
      山形大学(山形県)
    • Year and Date
      2017-03-09 – 2017-03-10
  • [Presentation] Spectral comparison of smoothing estimates and its applications2017

    • Author(s)
      M.Sugimoto
    • Organizer
      Critical Exponents and Nonlinear Evolution Equation 2017
    • Place of Presentation
      東京理科大学(東京都)
    • Year and Date
      2017-02-21 – 2017-02-21
    • Int'l Joint Research / Invited
  • [Presentation] Optimal smoothing estimates and a related PDE problem2016

    • Author(s)
      M.Sugimoto
    • Organizer
      Al-Khorezmiy 2016
    • Place of Presentation
      ウズベキスタン・ブハラ州立大
    • Year and Date
      2016-11-09 – 2016-11-09
    • Int'l Joint Research / Invited
  • [Presentation] Optimal smoothing estimates and related topics2016

    • Author(s)
      M.Sugimoto
    • Organizer
      Linear and Nonlinear Waves, No.14
    • Place of Presentation
      滋賀県立県民交流センター
    • Year and Date
      2016-11-03 – 2016-11-03
    • Int'l Joint Research / Invited
  • [Presentation] The Cauchy problem for a semilinear field equation in complex coordinates2016

    • Author(s)
      M. Nakamura
    • Organizer
      Workshop on Mathematical Sciences
    • Place of Presentation
      Wayamba University of Sri Lanka, Sri Lanka.
    • Year and Date
      2016-08-21 – 2016-08-21
    • Int'l Joint Research / Invited
  • [Presentation] On the derivation of a semilinear field equation in a uniform and isotropic space2016

    • Author(s)
      M. Nakamura
    • Organizer
      Wayamba International Conference
    • Place of Presentation
      Wayamba University of Sri Lanka, Sri Lanka
    • Year and Date
      2016-08-19 – 2016-08-20
    • Int'l Joint Research / Invited
  • [Presentation] Optimal trace theorems and a related PDE problem2016

    • Author(s)
      M.Sugimoto
    • Organizer
      Fourier Analysis and Applications Workshop
    • Place of Presentation
      中国・Tsinghua Sanya International Mathematics Forum
    • Year and Date
      2016-08-15 – 2016-08-18
    • Int'l Joint Research / Invited
  • [Presentation] A criterion for the global boundedness of locally bounded integral operators2016

    • Author(s)
      M.Sugimoto
    • Organizer
      4th East Asian Conference in Harmonic Analysis and Applications
    • Place of Presentation
      韓国・延世大学校
    • Year and Date
      2016-08-01 – 2016-08-01
    • Int'l Joint Research / Invited
  • [Presentation] Some effects of the spatial variance on the Cauchy problem for partial differential equations2016

    • Author(s)
      M. Nakamura
    • Organizer
      RIMS研究集会「調和解析と非線形偏微分方程式」
    • Place of Presentation
      京都大学(京都府)
    • Year and Date
      2016-07-04 – 2016-07-06
    • Int'l Joint Research / Invited
  • [Presentation] On a derivation of partial differential equations based on the relativistic theory2016

    • Author(s)
      M. Nakamura
    • Organizer
      信州大学偏微分方程式研究集会
    • Place of Presentation
      信州大学(長野県)
    • Year and Date
      2016-06-17 – 2016-06-18
    • Invited
  • [Presentation] On the maximizing problem associated with Trudinger-Moser type inequalities2016

    • Author(s)
      Hidemitsu Wadade
    • Organizer
      Bifurcations and Asymptotic Analysis of Solutions of Nonlinear Models
    • Place of Presentation
      Orlando, Florida, USA
    • Year and Date
      2016-06-01 – 2016-06-05
    • Int'l Joint Research
  • [Presentation] On the nonrelativistic limits of semilinear field equations for complex metrics2016

    • Author(s)
      M. Nakamura
    • Organizer
      研究会「Topics on Partial Differential Equations」
    • Place of Presentation
      京都産業大学(京都府)
    • Year and Date
      2016-05-02 – 2016-05-02

URL: 

Published: 2018-01-16  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi