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2008 Fiscal Year Final Research Report

Application of spectral methods to high-accuracy numerical relativity

Research Project

  • PDF
Project/Area Number 18740144
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionRikkyo University

Principal Investigator

HARADA Tomohiro  Rikkyo University, 理学部, 准教授 (60402773)

Project Period (FY) 2006 – 2008
Keywords相対論 / 重力(理論)
Research Abstract

Einstein方程式を解く数値的手法(数値相対論)を軸として、相対論的重力の非線形効果が重要となるいくつかの現象の解析を行った。特に、減速膨張宇宙および加速膨張宇宙における物質場存在下での動的なブラックホール解の構築とその性質、円筒対称および球対称重力崩壊における時空特異点の形成と自己相似解の役割、球対称ダストの重力崩壊における量子重力的効果という三つの課題について研究成果を出した。

  • Research Products

    (29 results)

All 2009 2008 2007 2006

All Journal Article (13 results) (of which Peer Reviewed: 13 results) Presentation (16 results)

  • [Journal Article] Singularities and self-similarity in gravitational collapse2009

    • Author(s)
      Tomohiro Harada
    • Journal Title

      a plenary talk given at the Hayashibara Forum at IHES on Singularities, 20-23 Nov 2006, Bures-sur-Yvette, France, to appear in the Advanced Study in Pure Mathematics (掲載決定)

      Pages: 15

    • Peer Reviewed
  • [Journal Article] Cosmological wormholes2009

    • Author(s)
      Hideki Maeda, Tomohiro Harada and B. J. Carr
    • Journal Title

      Phys. Rev D79(4),044034

      Pages: 10

    • Peer Reviewed
  • [Journal Article] High-Speed Collapse of a Hollow Sphere of Type I Matter2009

    • Author(s)
      Zahid Ahmed, Tomohiro Harada, Ken-ichi Nakao and M. Sharif
    • Journal Title

      Class. Quantum Grav 26(3),035007

      Pages: 15

    • Peer Reviewed
  • [Journal Article] Lemaitre-Tolman-Bondi collapse from the perspective of loop quantum gravity2008

    • Author(s)
      Martin Bojowald, Tomohiro Harada and Rakesh Tibrewala
    • Journal Title

      Phys. Rev D78(6),064057

      Pages: 30

    • Peer Reviewed
  • [Journal Article] Asymptotically Friedmann self-similar scalar field solutions with potential2008

    • Author(s)
      Masanori Kyo, Tomohiro Harada and Hideki Maeda
    • Journal Title

      Phys. Rev D77(12),124036

      Pages: 10

    • Peer Reviewed
  • [Journal Article] Self-similar cosmological solutions with dark energy II : black holes, naked singularities and wormholes2008

    • Author(s)
      Hideki Maeda, Tomohiro Harada and B. J. Carr
    • Journal Title

      Phys. Rev D77(2),024023

      Pages: 12

    • Peer Reviewed
  • [Journal Article] Self-similar cosmological solutions with dark energy I : formulation and asymptotic analysis2008

    • Author(s)
      Tomohiro Harada, Hideki Maeda and B. J. Carr
    • Journal Title

      Phys. Rev D77(2),024022

      Pages: 13

    • Peer Reviewed
  • [Journal Article] Critical Collapse of Einstein Cluster2007

    • Author(s)
      Ashutosh Mahajan, Tomohiro Harada, Pankaj S. Joshi and Ken-ichi Nakao
    • Journal Title

      Prog. Theor. Phys 118(5)

      Pages: 865-878

    • Peer Reviewed
  • [Journal Article] Black Hole Evaporation in an Expanding Universe2007

    • Author(s)
      Hiromi Saida, Tomohiro Harada and Hideki Maeda
    • Journal Title

      Class. Quantum Grav 24(18)

      Pages: 4711-4732

    • Peer Reviewed
  • [Journal Article] Analytical solutions for black-hole critical behaviour2007

    • Author(s)
      Tomohiro Harada and Ashutosh Mahajan
    • Journal Title

      Gen. Rel. Grav 39

      Pages: 1847-1854

    • Peer Reviewed
  • [Journal Article] Relativistic Gravitational Collapse of Cylindrical Dust2007

    • Author(s)
      Ken-ichi Nakao, Yasunari Kurita, Yoshiyuki Morisawa and Tomohiro Harada
    • Journal Title

      Prog. Theor. Phys 117(1)

      Pages: 75-102

    • Peer Reviewed
  • [Journal Article] Is there a black hole minimum mass?2006

    • Author(s)
      Tomohiro Harada
    • Journal Title

      Phys. Rev D74(8),084004

      Pages: 4

    • Peer Reviewed
  • [Journal Article] Non-existence of self-similar solutions containing a black hole in a universe with a stiff fluid or scalar field or quintessence2006

    • Author(s)
      Tomohiro Harada, Hideki Maeda and B. J. Carr
    • Journal Title

      Phys. Rev D74(2),024024

      Pages: 17

    • Peer Reviewed
  • [Presentation] Einstein-Rosen波と円筒対称時空における自己相似仮説2009

    • Author(s)
      原田知広、中尾憲一、B.C.Nolan
    • Organizer
      日本物理学会第64回年次大会
    • Place of Presentation
      立教大学
    • Year and Date
      2009-03-29
  • [Presentation] Gravitational collapse of a dust ball from a perspective of loop quantum gravity : an application2008

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 18th Workshop on General Relativity and Gravitation, 17-21 Nov,2008
    • Place of Presentation
      Hiroshima University, Hiroshima, Japan
    • Year and Date
      2008-11-20
  • [Presentation] ループ量子重力の観点からの球対称ダスト重力崩壊:数値計算2008

    • Author(s)
      原田知広、M.Bojowald、R.Tibrewala
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      山形大学
    • Year and Date
      2008-09-23
  • [Presentation] Self-similar black holes in an accelerated universe2008

    • Author(s)
      Tomohiro Harada
    • Organizer
      Spanish Relativity Meeting 2008, 15-19 Sep 2008
    • Place of Presentation
      Hospederia Fonseca Conference Centre, Salamanca, Spain
    • Year and Date
      2008-09-15
  • [Presentation] 重力崩壊の臨界現象の厳密な臨界解2008

    • Author(s)
      原田知広、A.Mahajan
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-24
  • [Presentation] Self-similar cosmological solutions with dark energy2007

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 17th Workshop on General Relativity and Gravitation, 3-7 Dec, 2007
    • Place of Presentation
      Nagoya University, Nagoya, Japan. (poster and short talk)
    • Year and Date
      2007-12-03
  • [Presentation] 暗黒エネルギー宇宙における自己相似的ブラックホール2007

    • Author(s)
      原田知広、前田秀基、B.J.カー
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      北海道大学
    • Year and Date
      2007-09-22
  • [Presentation] Self-similar cosmological solutions with dark energy I : formulation and asymptotic analysis2007

    • Author(s)
      Tomohiro Harada, Hideki Maeda and B.J. Carr
    • Organizer
      The 8th International Conference on Gravitation and Astrophysics,29 Aug-1 Sep 2007
    • Place of Presentation
      Nara Women's University, Nara, Japan(poster and short talk,査読有)
    • Year and Date
      2007-08-29
  • [Presentation] Black Hole Evaporation in a Friedmann Universe2007

    • Author(s)
      Hiromi Saida, Tomohiro Harada and Hideki Maeda
    • Organizer
      The 8th International Conference on Gravitation and Astrophysics, 29 Aug-1 Sep 2007
    • Place of Presentation
      Nara Women's University, Nara, Japan(poster and short talk,査読有)
    • Year and Date
      2007-08-29
  • [Presentation] Asymptotically Friedmann Self-Similar Solutions with Dark Energy2007

    • Author(s)
      Tomohiro Harada, Hideki Maeda and B. J. Carr
    • Organizer
      The 18th International Conference on General Relativity and Gravitation, 8-14 July 2007
    • Place of Presentation
      Sydney Conference Centre, Sydney, Australia
    • Year and Date
      2007-07-12
  • [Presentation] 暗黒エネルギー宇宙における自己相似的ブラックホール解の存在可能性について2007

    • Author(s)
      前田秀基、 原田知広、B.J.カー
    • Organizer
      日本物理学会第62回年次大会
    • Place of Presentation
      首都大学東京
    • Year and Date
      2007-03-26
  • [Presentation] Non-existence of self-similar black hole in a universe with a scalar field or quintessence2006

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 16th Workshop on General Relativity and Gravitation, 27 Nov-1 Dec, 2006
    • Place of Presentation
      Niigata Prefectural Civic Center, Niigata, Japan
    • Year and Date
      2006-11-30
  • [Presentation] Naked singularities and self-similarity in gravitational collapse2006

    • Author(s)
      Tomohiro Harada
    • Organizer
      an invited talk, Workshop "From Geometry To Numerics", 20-24 Nov 2006
    • Place of Presentation
      Institut Henri Poincare, Paris, France
    • Year and Date
      2006-11-24
  • [Presentation] Singularities and Self-Similarity in Gravitational Collapse2006

    • Author(s)
      Tomohiro Harada
    • Organizer
      an invited plenary talk, Hayashibara Forum on Singularities, 20-23 Nov 2006
    • Place of Presentation
      Insitut des Hautes Etudes Scientifiques, Bur-sur-Yvette, France
    • Year and Date
      2006-11-21
  • [Presentation] ブラックホールに最小質量はあるか?2006

    • Author(s)
      原田知広
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      奈良女子大学
    • Year and Date
      2006-09-23
  • [Presentation] Black Holes in Scalar Field/Quintessence Cosmology2006

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 11th Marcel Grossmann Meeting on recent developments in theoretical and experimental general relativity, gravitation, relativistic field theories, 23-29 Jul 2006
    • Place of Presentation
      Berlin Freie Universitaet, Berlin, Germany
    • Year and Date
      2006-07-24

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Published: 2010-06-10   Modified: 2016-04-21  

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