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Homogeneous Einstein manifolds

Research Project

Project/Area Number 21540080
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Geometry
Research InstitutionOsaka University

Principal Investigator

SKANE Yusuke  大阪大学, 名誉教授 (00089872)

Co-Investigator(Kenkyū-buntansha) TAMARU Hiroshi  広島大学, 大学院・理学研究科, 准教授 (50306982)
YAMADA Takumi  島根大学, 総合理工学部, 講師 (40403117)
Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords等質アインシュタイン計量 / 一般化された旗多様体 / リー群上の左不変リーマン計量 / アインシュタイン可解多様体 / 擬ケーラー計量 / コンパクトリー群上のアインシュタイン計量 / 不変なアインシュタイン計量 / 可解リー群 / 擬ケーラー構造 / 可解多様体 / 等質アインシュタイン多様体 / リー群上の左不変計量のなす空間 / 非コンパクト型対称空間 / 余次元1の作用 / 擬ケーラー多様体 / リッチ形式 / 擬ケーラー・アインシュタイン計量 / 非コンパクス型対弥空間 / 擬リーマン可解多様体 / リッチ平坦 / 曲率平坦擬リーマン計量
Research Abstract

For generalized flag manifolds, we completely classified homogeneous Einstein metrics in case that these have four isotropy summands. Moreover, in the cases when generalized flag manifolds have five or six isotropy summands, we obtain the existence of non-Kahler Einstein metrics on these spaces. For solvable Lie groups which are obtained by the extensions of nilpotent Lie subgroups corresponding to the parabolic Lie subalgebras of garaded semi-simple Lie groups, we have proved that there exist always Einstein metrics. We also constructed many compact pseudo-Kahler solvmanifolds with flat Ricci tensor.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (39 results)

All 2012 2011 2010 2009

All Journal Article (12 results) (of which Peer Reviewed: 12 results) Presentation (25 results) Book (2 results)

  • [Journal Article] Einstein metrics on compact Lie groups which are not naturally reductive2012

    • Author(s)
      A. Arvanitoyeorgos, K. Mori and Y. Sakane
    • Journal Title

      Geom. Dedicata

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Ricci flatness of certain compact pseudo-Kahler solvmanifolds2012

    • Author(s)
      T. Yamada
    • Journal Title

      J. Geom. Phys.

      Volume: 62 Pages: 1338-1345

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Holomorphic vector fields of compact pseudo-Kahler manifolds2012

    • Author(s)
      T. Yamada
    • Journal Title

      J. Geom. Phys

      Volume: 62 Pages: 740-750

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Homogeneous Einstein Metrics on Generalized Flag Manifolds Sp(n)/(U(p) xU(n-q))2011

    • Author(s)
      A. Arvanitoyeorgos, I. Chrysikos and Y. Sakane
    • Journal Title

      Diff. Geom. Appl

      Volume: 29

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Parabolic subgroups of semisimple Lie groups and Einstein solvmanifolds2011

    • Author(s)
      H. Tamaru
    • Journal Title

      Math. Ann

      Volume: 351 Pages: 51-66

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Homogeneous Einstein Metrics on Generalized Flag Manifolds Sp(n)/(U(p)xU(n-q))2011

    • Author(s)
      A.Arvanitoyeorgos, I.Chrysikos, Y.Sakane
    • Journal Title

      Differential Geom.Appl.

      Volume: 29 Pages: S16-S27

    • DOI

      10.1016/j.difgeo.2011.04.003

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Einstein metrics on compact Lie groups which are not naturally reductive2011

    • Author(s)
      A.Arvanitoyeorgos, K.Mori, Y.Sakane
    • Journal Title

      Geom Dedicata

      Volume: 160 Issue: 1 Pages: 1-25

    • DOI

      10.1007/s10711-011-9681-1

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Parabolic subgroups of semisimple Liegroups and Einstein solvmanifolds2011

    • Author(s)
      Hiroshi Tamaru
    • Journal Title

      Math. Ann

      Volume: 351, no.1, Issue: 1 Pages: 51-66

    • DOI

      10.1007/s00208-010-0589-0

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ricci flatness of certain compact pseudo-Kahler solvmanifolds2011

    • Author(s)
      T.Yamada
    • Journal Title

      Journal of Geometry and Physics

      Volume: Vol.62 Issue: 4 Pages: 1-8

    • DOI

      10.1016/j.geomphys.2011.08.001

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Complete description of invariant Einstein metrics on the generalized flag manifold SO(2n)/ U(p) xU(n-p)2010

    • Author(s)
      A. Arvanitoyeorgos, I. Chrysikos and Y. Sakane
    • Journal Title

      Ann. Glob. Anal. Geom

      Volume: 38 Pages: 413-438

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Complete description of invariant Einstein metrics on the generalized flag manifold SO(2n)/U(p)xU(n-p)2010

    • Author(s)
      A.Arvanitoyeorgos, I.Chrysikos, Y.Sakane
    • Journal Title

      Ann.Glob.Anal.Geom.

      Volume: 38 Pages: 413-438

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Parabolic subgroups of semisimple Lie groups and Einstein solvmanifolds2010

    • Author(s)
      Hiroshi Tamaru
    • Journal Title

      Math.Ann.

      Volume: (on line)

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] Recent progress on homogeneous Einstein metrics on generalized flag manifolds2011

    • Author(s)
      坂根由昌
    • Organizer
      松江微分幾何学研究会
    • Place of Presentation
      島根大学
    • Year and Date
      2011-12-17
    • Related Report
      2011 Final Research Report
  • [Presentation] Some studies on compact non-Kaehler manifolds2011

    • Author(s)
      山田拓身
    • Organizer
      松江微分幾何学研究会
    • Place of Presentation
      島根大学
    • Year and Date
      2011-12-17
    • Related Report
      2011 Final Research Report
  • [Presentation] Recent progress on homogeneous Einstein metrics on generalized flag manifolds2011

    • Author(s)
      坂根由昌
    • Organizer
      松江微分幾何学研究会2011
    • Place of Presentation
      島根大学(招待講演)
    • Year and Date
      2011-12-17
    • Related Report
      2011 Annual Research Report
  • [Presentation] Some studies on compact non-Kaehler manifolds2011

    • Author(s)
      山田拓身
    • Organizer
      松江微分幾何学研究会2011
    • Place of Presentation
      島根大学(招待講演)
    • Year and Date
      2011-12-17
    • Related Report
      2011 Annual Research Report
  • [Presentation] Parabolic subgroups of semisimple Lie groups and submanifold geometry2011

    • Author(s)
      Hiroshi Tamaru
    • Organizer
      DFG-JSPS Seminar" Lie Groups : Geometry and Analysis"
    • Place of Presentation
      Paderborn
    • Year and Date
      2011-09-09
    • Related Report
      2011 Final Research Report
  • [Presentation] Parabolic subgroups and geometry of noncompact homogeneous spaces2011

    • Author(s)
      Hiroshi Tamaru
    • Organizer
      Tsinghua University Seminar
    • Place of Presentation
      Tsinghua University
    • Year and Date
      2011-08-18
    • Related Report
      2011 Final Research Report
  • [Presentation] Parabolic subgroups and geometry of solvable Lie groups2011

    • Author(s)
      Hiroshi Tamaru
    • Organizer
      10th Panhellenic Geometry Conference
    • Place of Presentation
      Patras
    • Year and Date
      2011-05-28
    • Related Report
      2011 Final Research Report
  • [Presentation] Parabolic subgroups and geometry of solvable Lie groups2011

    • Author(s)
      H.Tamaru
    • Organizer
      10th Panhellenic Geometry Conference
    • Place of Presentation
      Patras(ギリシャ)(招待講演)
    • Year and Date
      2011-05-28
    • Related Report
      2011 Annual Research Report
  • [Presentation] Parabolic subgroups and submanifold geometry of noncompact sym-metric spaces2011

    • Author(s)
      Hiroshi Tamaru
    • Organizer
      Mini International Workshop on Geometry of Symmetric Spaces and Related Fields
    • Place of Presentation
      Kyungpook National University
    • Year and Date
      2011-04-14
    • Related Report
      2011 Final Research Report
  • [Presentation] 一般化された旗多様体上の等質アインシュタイン計量2011

    • Author(s)
      坂根由昌
    • Organizer
      第18回沼津研究会-幾何,数理物理,そして量子論-
    • Place of Presentation
      沼津工業高等専門学校
    • Year and Date
      2011-03-08
    • Related Report
      2011 Final Research Report
  • [Presentation] Invariant Einstein metrics on generalized flag manifolds2010

    • Author(s)
      坂根由昌
    • Organizer
      松江微分幾何学研究集会2010
    • Place of Presentation
      島根大学
    • Year and Date
      2010-12-11
    • Related Report
      2011 Final Research Report
  • [Presentation] コンパクト擬ケーラー多様体の正則ベクトル場について2010

    • Author(s)
      山田拓身
    • Organizer
      松江微分幾何学研究集会2010
    • Place of Presentation
      島根大学
    • Year and Date
      2010-12-11
    • Related Report
      2011 Final Research Report
  • [Presentation] Invariant Einstein metrics on generalized flag manifolds2010

    • Author(s)
      坂根由昌
    • Organizer
      松江微分幾何学研究集会2010
    • Place of Presentation
      島根大学(招待講演)
    • Year and Date
      2010-12-11
    • Related Report
      2010 Annual Research Report
  • [Presentation] コンパクト擬ケーラー多様体の正則ベクトル場について2010

    • Author(s)
      山田拓身
    • Organizer
      松江微分幾何学研究集会2010
    • Place of Presentation
      島根大学(招待講演)
    • Year and Date
      2010-12-11
    • Related Report
      2010 Annual Research Report
  • [Presentation] 非コンパクト対称空間への良い作用の構成法2010

    • Author(s)
      田丸博士
    • Organizer
      研究集会「部分多様体幾何とリー群作用」
    • Place of Presentation
      東京理科大学
    • Year and Date
      2010-09-08
    • Related Report
      2011 Final Research Report
  • [Presentation] Invariant Einstein metrics on generalized flag manifolds2010

    • Author(s)
      Yusuke Sakane
    • Organizer
      2nd meeting ICDG 2010
    • Place of Presentation
      Univ. of Veliko Tarnovo
    • Year and Date
      2010-09-07
    • Related Report
      2011 Final Research Report
  • [Presentation] Invariant Einstein metrics on generalized flag manifolds2010

    • Author(s)
      坂根由昌
    • Organizer
      ICDG 2010
    • Place of Presentation
      Univ.of Veliko Tarnovo (Bulgaria)(招待講演)
    • Year and Date
      2010-09-07
    • Related Report
      2010 Annual Research Report
  • [Presentation] 非コンパクト対称空間への良い作用の構成法2010

    • Author(s)
      田丸博士
    • Organizer
      研究集会「部分多様体幾何とリー群作用」
    • Place of Presentation
      東京理科大学(招待講演)
    • Year and Date
      2010-09-07
    • Related Report
      2010 Annual Research Report
  • [Presentation] Cohomogeneity one actions on symmetric spaces of noncompact type2010

    • Author(s)
      Hiroshi Tamaru
    • Organizer
      Workshop on Hypersurfaces Geometry and Integrable Systems
    • Place of Presentation
      東北大学
    • Year and Date
      2010-08-26
    • Related Report
      2011 Final Research Report
  • [Presentation] On compact real-parallelizable complex solvmanifolds2009

    • Author(s)
      山田拓身
    • Organizer
      松江微分幾何学研究会
    • Place of Presentation
      島根大学
    • Year and Date
      2009-12-12
    • Related Report
      2009 Annual Research Report
  • [Presentation] Canonical extensions of isometric actions on noncompact sym-metric spaces2009

    • Author(s)
      Hiroshi Tamaru
    • Organizer
      Submanifold Geometry and Lie Group Theory
    • Place of Presentation
      大阪市立大学
    • Year and Date
      2009-11-01
    • Related Report
      2011 Final Research Report
  • [Presentation] Canonical extensions of isometric actions on noncompact symmetric spaces2009

    • Author(s)
      田丸博士
    • Organizer
      Submanifold Geometry and Lie Group Theory
    • Place of Presentation
      大阪市立大学
    • Year and Date
      2009-11-01
    • Related Report
      2009 Annual Research Report
  • [Presentation] The space of left-invariant metrics on a Lie group2009

    • Author(s)
      田丸博士
    • Organizer
      Geometry Seminar
    • Place of Presentation
      King's College, London (UK)
    • Year and Date
      2009-09-07
    • Related Report
      2009 Annual Research Report
  • [Presentation] リー群の左不変計量の成す空間について2009

    • Author(s)
      田丸博士
    • Organizer
      第56回幾何学シンポジウム
    • Place of Presentation
      佐賀大学
    • Year and Date
      2009-08-29
    • Related Report
      2011 Final Research Report 2009 Annual Research Report
  • [Presentation] 対称空間論から見たカンドル2009

    • Author(s)
      田丸博士
    • Organizer
      Workshop on Topology and Geometry (Quandles and related topics)
    • Place of Presentation
      広島大学
    • Year and Date
      2009-07-11
    • Related Report
      2009 Annual Research Report
  • [Book] Recent Progress in Differential Geometry and Its Related Fields, Proceedingsof the 2^nd International Colloquium on Differential Geometry and Its Related Fields, Chapter 1 Homogeneous Einstein Metrics on Generalized Flag Manifolds Sp(n)/(U(p) xU(q) x Sp(n2011

    • Author(s)
      A. Arvanitoyeorgos, I. Chrysikos and Y. Sakane
    • Publisher
      World Scientific Pub. Co.
    • Related Report
      2011 Final Research Report
  • [Book] Recent Progress in Differential Geometry and Its Related Fields, Proceedings of the 2^<nd> International Colloquium on Differential Geometry and Its Related Fields, Chapter 1, Homogeneous Einstein Metrics on Generalized Flag Manifolds Sp(n)/(U(p)xU(q)xSp(n-p-q))2011

    • Author(s)
      A.Arvanitoyeorgos, I.Chrysikos, Y.Sakane
    • Publisher
      World Scientific Pub.Co.
    • Related Report
      2011 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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