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Construction and uniqueness of asymptotically symmetric Einstein spaces

Research Project

Project/Area Number 20K03584
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 11020:Geometry-related
Research InstitutionOsaka University

Principal Investigator

MATSUMOTO Yoshihiko  大阪大学, 大学院理学研究科, 准教授 (00710625)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords微分幾何学 / 漸近的対称空間 / アインシュタイン計量 / 共形幾何学 / CR幾何学 / リーマン幾何学 / アインシュタイン方程式 / 放物幾何 / Riemann幾何学 / Einstein方程式 / バルク境界対応
Outline of Research at the Start

この研究では、漸近的対称Einstein空間とよばれる抽象的な空間について調べる。より具体的には、Einstein空間の存在や、無限遠境界の幾何構造を指定したときの「Einstein充填」の一意性について新たな展開を与える。本研究でとる第一のアプローチは「大きな対称性をもつEinstein空間の具体的構成の追究」で、これは将来の諸研究のきっかけになるとともに、とくに一意性に関する新たな知見をもたらすことが期待される。第二のアプローチは「異なるタイプをもつ漸近的対称空間を接続するような幾何解析の理論の構築」で、これによってとくにAH-Einstein空間の新たな構成が得られることを予期している。

Outline of Final Research Achievements

I conducted research related to the "Einstein filling problem," which is the problem of constructing the corresponding "asymptotically symmetric Einstein spaces" for a given geometric asymptotic boundary. This project is connected to the idea known as "bulk-boundary correspondence" or "holographic principle" in high-energy physics and differential geometry. While many of the initially set goals remain as topics requiring continued examination, certain results have been achieved regarding two issues that arose during the course of the research. These achievements were documented in papers and presented and discussed at both domestic and international research conferences.

Academic Significance and Societal Importance of the Research Achievements

本課題で実施した研究は純粋数学に属するもので、近い未来に実用的な意味で社会に役立つことは期待しづらい。しかし、人類の共有する知的地平を広げるという点において意義がある。ひいては、国際社会において日本が文化的な敬意を得ることにも、多少の貢献があるかもしれない。
学術的には、世界的にみて新しく、国内外の研究者と協力して発展させられる可能性のある、将来にわたる研究の題材を提供したものと信ずる。また、物理学には何らかの形で直接的な影響をもたらす可能性もあると期待される。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (19 results)

All 2023 2022 2021 Other

All Int'l Joint Research (5 results) Presentation (12 results) (of which Int'l Joint Research: 5 results,  Invited: 6 results) Remarks (2 results)

  • [Int'l Joint Research] スタンフォード大学(米国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] 上海科技大学(中国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] シアトル大学(米国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] シアトル大学(米国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] スタンフォード大学/シアトル大学(米国)

    • Related Report
      2020 Research-status Report
  • [Presentation] Renormalized energy of maps and conformal geodesics2023

    • Author(s)
      Yoshihiko Matsumoto
    • Organizer
      Pacific Rim Complex and Symplectic Geometry Conference 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Renormalized energy of maps and conformal geodesics2023

    • Author(s)
      Yoshihiko Matsumoto
    • Organizer
      Joint Japan/US Collaborative Workshop on Geometric Analysis
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Holography in conformal and CR geometry2023

    • Author(s)
      Yoshihiko Matsumoto
    • Organizer
      Analysis, Geometry and Stochastics on Metric Spaces
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Renormalized energy of maps and conformal geodesics2023

    • Author(s)
      Yoshihiko Matsumoto
    • Organizer
      Geometric Analysis
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 写像の繰り込みエネルギーと共形測地線2023

    • Author(s)
      松本佳彦
    • Organizer
      日本数学会2023年度年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 写像の繰り込みエネルギーと共形測地線2023

    • Author(s)
      松本佳彦
    • Organizer
      Workshop on Complex geometry in Osaka
    • Related Report
      2022 Research-status Report
  • [Presentation] The CR Killing operator and the BGG construction in CR geometry2022

    • Author(s)
      Yoshihiko Matsumoto
    • Organizer
      Geometric Structures, Compactifications, and Group Actions
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] The CR Killing operator and the Bernstein-Gelfand-Gelfand construction in CR geometry2022

    • Author(s)
      松本佳彦
    • Organizer
      複素解析幾何セミナー(東京大学)
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] CR Killing作用素とBernstein-Gelfand-Gelfand構成2022

    • Author(s)
      松本佳彦
    • Organizer
      日本数学会2022年度秋季総合分科会
    • Related Report
      2022 Research-status Report
  • [Presentation] CR Killing作用素とBernstein-Gelfand-Gelfand構成2022

    • Author(s)
      松本佳彦
    • Organizer
      日本数学会2022年度年会
    • Related Report
      2021 Research-status Report
  • [Presentation] On prolongation and the normal tractor connection for contact manifolds with compatible almost CR structures2021

    • Author(s)
      松本佳彦
    • Organizer
      大阪大学幾何セミナー
    • Related Report
      2021 Research-status Report
  • [Presentation] The CR obstruction tensor and Bernstein-Gelfand-Gelfand operators in CR geometry2021

    • Author(s)
      松本佳彦
    • Organizer
      東京工業大学幾何セミナー
    • Related Report
      2021 Research-status Report
  • [Remarks] Yoshihiko Matsumoto

    • URL

      http://www4.math.sci.osaka-u.ac.jp/~matsumoto/

    • Related Report
      2023 Annual Research Report 2022 Research-status Report 2021 Research-status Report 2020 Research-status Report
  • [Remarks] 松本佳彦(researchmap)

    • URL

      https://researchmap.jp/ymatz

    • Related Report
      2023 Annual Research Report 2022 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

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