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Study of fundamental properties of deformed Hermitian Yang-Mills connections and line bundle mean curvature flows

Research Project

Project/Area Number 18K13415
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 11020:Geometry-related
Research InstitutionUniversity of Tsukuba (2020-2021)
Tokyo University of Science (2018-2019)

Principal Investigator

Yamamoto Hikaru  筑波大学, 数理物質系, 准教授 (50778173)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords変形エルミート・ヤン・ミルズ接続 / 変形ドナルドソン・トーマス接続 / 特殊ラグランジュ部分多様体 / 特殊ホロノミー / モジュライ空間 / 変形理論 / ミラー対称性 / フーリエ向井変換 / 実フーリエ向井変換 / 変形エルミートヤンミルズ接続 / 線束平均曲率流 / 単調性公式 / イプシロン正則性定理 / 自己縮小解
Outline of Final Research Achievements

I proved that the deformation of a deformed Hermitian Yang-Mills connection has no obstruction and the moduli space is a higher dimensional torus. I also studied deformed Donaldson-Thomas connection as a relatively new concept. I proved that the deformation of a deformed Donaldson-Thomas connection has an obstruction . During the study, I refined the definition of deformed Donaldson-Thomas connections. By using the real Fourier-Mukai transform, I introduced a notion of volume for Hermitian connections on a Hermitian line bundle, and did analysis of the negative gradient flow and critical points of this volume functional.

Academic Significance and Societal Importance of the Research Achievements

変形エルミート・ヤン・ミルズ接続や変形ドナルドソン・トーマス接続は,ミラー対称性により特殊ラグランジュ部分多様体や他の特殊ホロノミーを持つ多様体内の特殊部分多様体と密接に関係し合っている.しかし,発見の経緯上,後者はよく研究されているが,前者の研究は少ない.本研究の結果は,特殊ラグランジュ部分多様体や他の特殊部分多様体に対して期待される性質は,概ね変形エルミート・ヤン・ミルズ接続や変形ドナルドソン・トーマス接続に対しても期待して良いということを言っている.これにより,前者の研究がより活発化することが期待できる.

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (24 results)

All 2022 2021 2020 2019 2018 Other

All Int'l Joint Research (2 results) Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (17 results) (of which Int'l Joint Research: 9 results,  Invited: 14 results)

  • [Int'l Joint Research] 清華大学(中国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] 清華大学(中国)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Deformation Theory of Deformed Hermitian Yang?Mills Connections and Deformed Donaldson?Thomas Connections2022

    • Author(s)
      Kawai Kotaro、Yamamoto Hikaru
    • Journal Title

      The Journal of Geometric Analysis

      Volume: 32 Issue: 5

    • DOI

      10.1007/s12220-022-00898-z

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The real Fourier?Mukai transform of Cayley cycles2021

    • Author(s)
      Kawai Kotaro、Yamamoto Hikaru
    • Journal Title

      Pure and Applied Mathematics Quarterly

      Volume: 17 Issue: 5 Pages: 1861-1898

    • DOI

      10.4310/pamq.2021.v17.n5.a7

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Deformation Theory of Deformed Donaldson?Thomas Connections for $${\text {Spin}(7)}$$-manifolds2021

    • Author(s)
      Kawai Kotaro、Yamamoto Hikaru
    • Journal Title

      The Journal of Geometric Analysis

      Volume: 31 Issue: 12 Pages: 12098-12154

    • DOI

      10.1007/s12220-021-00712-2

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Solutions with time-dependent singular sets for the heat equation with absorption2019

    • Author(s)
      Jin Takahashi, Hikaru Yamamoto
    • Journal Title

      Journal of Differential Equations

      Volume: 266 Issue: 7 Pages: 4061-4105

    • DOI

      10.1016/j.jde.2018.09.029

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ricci-mean curvature flows in gradient shrinking Ricci solitons2019

    • Author(s)
      Hikaru Yamamoto
    • Journal Title

      Asian Journal of Mathematics

      Volume: 印刷中

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 変形エルミート・ヤン・ミルズ(dHYM)接続入門2021

    • Author(s)
      山本光
    • Organizer
      対称空間の部分多様体とその時間発展
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 線束平均曲率流とdYHM接続のモジュライ空間2021

    • Author(s)
      山本光
    • Organizer
      対称空間の部分多様体とその時間発展
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 変形エルミート・ヤン・ミルズ接続のモジュライ空間2021

    • Author(s)
      山本光
    • Organizer
      部分多様体幾何とリー群作用
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 変形エルミート・ヤン・ミルズ接続の基礎と最近の研究2021

    • Author(s)
      山本光
    • Organizer
      筑波大学微分幾何学セミナー
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 特殊ラグランジュ部分多様体と平均曲率流とそのミラー2020

    • Author(s)
      Hikaru Yamamoto
    • Organizer
      大阪市立大学数学研究会特別賞受賞講演
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 特殊ラグランジュ部分多様体と平均曲率流とそのミラー2020

    • Author(s)
      Hikaru Yamamoto
    • Organizer
      日本数学会
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] An epsilon regularity theorem for line bundle mean curvature flow2019

    • Author(s)
      Hikaru Yamamoto
    • Organizer
      Trends in Modern Geometry 2019
    • Related Report
      2019 Research-status Report
  • [Presentation] 変形エルミート・ヤン・ミルズ接続入門2019

    • Author(s)
      Hikaru Yamamoto
    • Organizer
      東北大幾何セミナー
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] An epsilon regularity theorem for line bundle mean curvature flow2019

    • Author(s)
      Hikaru Yamamoto
    • Organizer
      East Asian Symplectic Conference 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] The moduli space of deformed Hermitian Yang-Mills connections2019

    • Author(s)
      Hikaru Yamamoto
    • Organizer
      Complex Geometry Seminar of Yau Mathematical Science Center
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ε-regularity theorem for line bundle mean curvature flows2019

    • Author(s)
      Hikaru Yamamoto
    • Organizer
      The Workshop on Global Aspects of Projective and Kahler Geometry
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 線束平均曲率流の ε-正則性定理2019

    • Author(s)
      Hikaru Yamamoto
    • Organizer
      日本数学会
    • Related Report
      2018 Research-status Report
  • [Presentation] Special Lagrangian and deformed Hermitian Yang-Mills on tropical manifold2018

    • Author(s)
      Hikaru Yamamoto
    • Organizer
      国際数学者会議 2018 (ICM 2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Special Lagrangian, deformed Hermitian Yang-Mills and line bundle mean curvature flow2018

    • Author(s)
      Hikaru Yamamoto
    • Organizer
      第65回幾何学シンポジウム
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 変形エルミート・ヤン・ミルズ接続の幾何学2018

    • Author(s)
      Hikaru Yamamoto
    • Organizer
      部分多様体幾何とリー群作用
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 変形エルミート・ヤン・ミルズ接続と線束平均曲率流について2018

    • Author(s)
      Hikaru Yamamoto
    • Organizer
      福岡大学微分幾何研究会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 変形エルミート・ヤン・ミルズ接続と線束平均曲率流2018

    • Author(s)
      Hikaru Yamamoto
    • Organizer
      東京理科大学幾何学セミナー
    • Related Report
      2018 Research-status Report
    • Invited

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Published: 2018-04-23   Modified: 2025-11-20  

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