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2008 Fiscal Year Annual Research Report

超弦理論と宇宙の創成

Research Project

Project/Area Number 19GS0219
Research InstitutionKyoto University

Principal Investigator

江口 徹  Kyoto University, 基礎物理学研究所, 教授 (20151970)

Keywords弦理論 / 量子重力 / ブレーン世界 / 宇宙創生 / インフレーション宇宙 / 高次元ブラックホール
Research Abstract

今年度は8月3日-13日に60名程度が参加した合宿形式のサマースクールを富士吉田の人材研修センターで行なった。また、2月に城崎で3日間のミニワークショップを開催した。ポストドクター研究員は昨年に引き続きA.Flachiさんと藤博之さんを雇用したが、藤さんは9月から名古屋大学に特任講師として異動した。
1.江口はN=4の超共形代数の表現を調べ、解析数論で開発された手法を用いてハイパーケーラー多様体上にコンパクト化された弦理論のトポロジカルな性質を調べた。特に、K3局面の楕円種数に含まれる無限個のmassive表現の展開係数を決定した。
また、以下の論文を出版予定である。
(1)"Modular Forms and Elliptic Genera for ALE Spaces", Tohru Eguchi, Yuji Sugawara, and Anne Taormina, Advanced Studies in Pure mathematics 2009
(2)"Superconformal Algebras and Mock Theta Functions"Tohru Eguchi and Kazuhiro Hikami, Journal of Physics A, 2009
2.佐々木は、宇宙マイクロ波背景幅射に大きく反映する非ガウス的揺らぎを生成するインフレーション宇宙のシナリオ「マルチブリッド・インフレーション」を提案した。また、高次元でガウス・ボンネ項を持つ修正重力理論において、理論のパラメーターがある特殊な関係を満たすとき、回転するブラックホール解か存在することを示し、その厳密解を求めた。
3.杉本は、超弦理論を用いてバリオンの荷電半径、磁気モーメント、形状因子, 2核子間に働く核力などを計算し、観測事実をかなりうまく再現することを示した。
4.高次元の湾曲余剰次元模型の構築は、超弦理論が記述する宇宙を理解する上で緊急の課題となっている。白水は、そこで第一段階として6次元の模型を提案し、4次元宇宙で成り立つ有効理論の考察を行った。特に、曲率の高次補正の効果が無視できない可能性を指摘した。
5.高柳は、N=6超対称チャーンサイモンズ理論と4次元反ドジッター空間のAdS/CFT対応を用いて、ファジー球面のDブレーンが回転をするとトポロジーが変化してファジートーラスに変化することを見出した。これは、高次元ブラックホールが高速回転するとブラックストリングになる現象の理解に役立つと期待される。また分数量子ホール効果のAdS/CFT対応の模型を初めて構成した。
6.向山は、時空曲率と共形結合するブレーンインフレーションの理論を、観測から制限した。
また、宇宙論的摂動の非線形発展方程式の再定式化、QGP実験の状況に双対なブラックホール時空の構成、等をおこなった。

  • Research Products

    (43 results)

All 2009 2008

All Journal Article (19 results) (of which Peer Reviewed: 19 results) Presentation (24 results)

  • [Journal Article] Kerr-Schild ansatz in Einstein-Gauss-Bonnet gravity: An exact vacuum solution in five dimensions2009

    • Author(s)
      A. Anabalon, N. Deruelle, Y. Morisawa, J. Oliva, M. Sasaki, D.
    • Journal Title

      Classical and Quantum Gravity 26

      Pages: 065002 1-11

    • Peer Reviewed
  • [Journal Article] Large non-Gaussianity from multi-brid inflation2009

    • Author(s)
      A. Naruko, M. Sasaki
    • Journal Title

      Progress of Theoretical Physics 121

      Pages: 193-210

    • Peer Reviewed
  • [Journal Article] Curvature perturbation spectrum from false vacuum inflation2009

    • Author(s)
      J. O. Gong, M. Sasaki
    • Journal Title

      Journal of Cosmology and Astroparticle Physics 901

      Pages: 001 1-18

    • Peer Reviewed
  • [Journal Article] A Holographic Dual of Biorken Flow2009

    • Author(s)
      Shunichiro Kinoshita, Shinji Mukohyama, Shin Nakamura, Kin-
    • Journal Title

      Progress of Theoretical Physics 121

      Pages: 121-164

    • Peer Reviewed
  • [Journal Article] Consistent Anti-de Sitter-Space/Conformal-Field-Theory Dual for a Time-Dependent Finite Temperature System2009

    • Author(s)
      Shunicniro Kinosnita, Shinji Mukohyama, Shin Nakamura, Kinya Oda
    • Journal Title

      Physical Review Letters 102

      Pages: 031601 1-4

    • Peer Reviewed
  • [Journal Article] Nonlinear superhorizon perturbations of non-canonical scalar field2009

    • Author(s)
      Yu-ichi Takamizu, Shinji Mukohyama
    • Journal Title

      Journal of Cosmology and Astroparticle Physics 901

      Pages: 013 0-20

    • Peer Reviewed
  • [Journal Article] Conformal inflation, modulated reheating and WMAP52009

    • Author(s)
      Takeshi Kobayashi, Shinji Mukohyama
    • Journal Title

      Physical Review D 79

      Pages: 083501 1-7

    • Peer Reviewed
  • [Journal Article] Geometrtic engineering limit and weak gravity conjecture2008

    • Author(s)
      Tohru Eguchi, Yuji Tachikawa
    • Journal Title

      International Journal of Modern Physics A 23

      Pages: 2067-2073

    • Peer Reviewed
  • [Journal Article] Effects of particle production during inflation2008

    • Author(s)
      A. E. Romano, M. Sasaki
    • Journal Title

      Physical Review D 78

      Pages: 103522 1-6

    • Peer Reviewed
  • [Journal Article] Multi-brid inflation and non-Gaussianity2008

    • Author(s)
      M. Sasaki
    • Journal Title

      Progress of Theoretical Physics 120

      Pages: 159-174

    • Peer Reviewed
  • [Journal Article] Detuned' f(R) gravity and dark energy2008

    • Author(s)
      N. Deruelle, M. Sasaki, Y. Sendouda
    • Journal Title

      Physical Review D 77

      Pages: 124024 1-5

    • Peer Reviewed
  • [Journal Article] Holographic Baryons: Static Properties and Form Factors from Gauge/String Duality2008

    • Author(s)
      K. Hashimoto, T. Sakai, S. Sugimoto
    • Journal Title

      Progress of Theoretical Physics 120

      Pages: 1093-1137

    • Peer Reviewed
  • [Journal Article] Curvature corrections to the low energy effective theory in 6D regularized braneworlds2008

    • Author(s)
      T. Kobayashi, T. Shiromizu, C. deRham
    • Journal Title

      77

      Pages: 124012 1-14

    • Peer Reviewed
  • [Journal Article] Decaying D-branes and Moving Mirrors2008

    • Author(s)
      T. Hirata, S. Mukohyama, T. Takayanagi
    • Journal Title

      Journal of High Energy Physics 805

      Pages: 89 1-26

    • Peer Reviewed
  • [Journal Article] Geometric Entropy and Hagedorn/Deconfinement Transition2008

    • Author(s)
      M. Fujita, T. Nishioka, T. Takayanagi
    • Journal Title

      Journal of High Energy Physics 809

      Pages: 16 1-17

    • Peer Reviewed
  • [Journal Article] On Type IIA Penrose Limit and N=6 Chern-Simons Theories2008

    • Author(s)
      T. Nishioka, T. Takayanagi
    • Journal Title

      Journal of High Energy Physics 808

      Pages: 001 1-17

    • Peer Reviewed
  • [Journal Article] Fuzzy Ring from M2-brane Giant Torus2008

    • Author(s)
      T. Nishioka, T. Takayanagi
    • Journal Title

      Journal of High Energy Physics 810

      Pages: 82 1-22

    • Peer Reviewed
  • [Journal Article] Disordered Systems and the Replica Method in AdS/CFT2008

    • Author(s)
      M. Fujita, Y. Hikida, S. Ryu, T. Takayanagi
    • Journal Title

      Journal of High Energy Physics 812

      Pages: 65 1-22

    • Peer Reviewed
  • [Journal Article] Decaying D-branes and Moving Mirrors2008

    • Author(s)
      Tomoyoshi Hirata, Shinji Mukohyama, Tadashi Takayanagi
    • Journal Title

      Journal of High Energy Physics 805

      Pages: 089 0-22

    • Peer Reviewed
  • [Presentation] インフレーション宇宙からの非ガウス揺らぎ2009

    • Author(s)
      佐々木節
    • Organizer
      日本物理学会第64回年次大会プログラム
    • Place of Presentation
      立教大学
    • Year and Date
      2009-03-28
  • [Presentation] 南部先生と弦理論の発展2009

    • Author(s)
      江口徹
    • Organizer
      日本物理学会第64回年次大会プログラム南部博士ノーベル賞記念シンポジウム
    • Place of Presentation
      立教大学
    • Year and Date
      2009-03-27
  • [Presentation] Cosmological perturbations from inflation2009

    • Author(s)
      Misao Sasaki
    • Organizer
      APCTP-NCTS International School/Workshop on Gravitation and Cosmology
    • Place of Presentation
      Pohang, Korea
    • Year and Date
      2009-01-17
  • [Presentation] AdS/CFT対応とその応用2008

    • Author(s)
      杉本茂樹
    • Organizer
      量子色力学の相構造研究の現状と展望
    • Place of Presentation
      九州大学
    • Year and Date
      2008-12-26
  • [Presentation] Properties of Baryons in holographic QCD2008

    • Author(s)
      Shigeki Sugimoto
    • Organizer
      Indian Strings Meeting 2008
    • Place of Presentation
      Pondicherry, India
    • Year and Date
      2008-12-07
  • [Presentation] アインシュタインと宇宙の謎2008

    • Author(s)
      江口徹
    • Organizer
      Heterotic Typell duality
    • Place of Presentation
      KEK
    • Year and Date
      2008-12-02
  • [Presentation] アインシュタインと宇宙の謎2008

    • Author(s)
      江口徹
    • Organizer
      京都大学GCOE講演会
    • Place of Presentation
      京都大学
    • Year and Date
      2008-11-30
  • [Presentation] Superconformal Algebra and Mock Theta Function2008

    • Author(s)
      江口徹
    • Organizer
      DESY workshop 'Applied 2d sigma model'
    • Place of Presentation
      Hamburg, Germany
    • Year and Date
      2008-11-11
  • [Presentation] Primordial black hole formation after inflation2008

    • Author(s)
      Misao Sasaki
    • Organizer
      BIRS workshop on "Black Holes: Theoretical, Mathematical and Computational aspects"
    • Place of Presentation
      Banff, Canada
    • Year and Date
      2008-11-11
  • [Presentation] Entanglement Entropy and Phase Transition in AdS/CFT Correspondence2008

    • Author(s)
      T. Takayanagi
    • Organizer
      Recent Developments in String/M Theory
    • Place of Presentation
      KIAS, Seoul, Korea
    • Year and Date
      2008-09-25
  • [Presentation] Superconformal Algebra and Mock Theta Function2008

    • Author(s)
      江口徹
    • Organizer
      Algebraic Geometry and Physics 08
    • Place of Presentation
      杭州、中国
    • Year and Date
      2008-09-21
  • [Presentation] Fuzzy Ring from M2-brane Giant Torus2008

    • Author(s)
      T. Takayanagi
    • Organizer
      Focus Week on Quantum Black Holes
    • Place of Presentation
      IPMU
    • Year and Date
      2008-09-16
  • [Presentation] Large non-gaussianity from multibrid inflation2008

    • Author(s)
      Misao Sasaki
    • Organizer
      CTC Workshop on "Non-Gaussianity from Fundamental Physics"
    • Place of Presentation
      Cambridge, U. K.
    • Year and Date
      2008-09-10
  • [Presentation] Baryons in Holographic QCD2008

    • Author(s)
      Shigeki Sugimoto
    • Organizer
      Summer Institute "Theories de jauge, gravite et theories de cordes"
    • Place of Presentation
      Ecole Normale Superieure
    • Year and Date
      2008-09-02
  • [Presentation] Entanglement Entropy and Phase Transition in AdS/CFT Correspondence2008

    • Author(s)
      T. Takayanagi
    • Organizer
      Monsoon workshop on string theory
    • Place of Presentation
      TIFR, Mumbai, India
    • Year and Date
      2008-07-28
  • [Presentation] Mufti-brid inflation and non-Gaussianity2008

    • Author(s)
      Misao Sasaki
    • Organizer
      13th Russian Gravitational Conference (RUSGRAV-13)
    • Place of Presentation
      Moscow, Russia
    • Year and Date
      2008-06-24
  • [Presentation] Delta N formalism and nonlinear curvature perturbations from inflation2008

    • Author(s)
      Misao Sasaki
    • Organizer
      L. D. Landau Memorial Conference "Advances in Theoretical Physics"
    • Place of Presentation
      Chernogolovka, Russia
    • Year and Date
      2008-06-23
  • [Presentation] N=2 Liouville Theory2008

    • Author(s)
      江口徹
    • Organizer
      Zamolodchikov追悼研究会
    • Place of Presentation
      モスクワ
    • Year and Date
      2008-06-22
  • [Presentation] Properties of Baryons from D-branes and Instantons2008

    • Author(s)
      Shigeki Sugimoto
    • Organizer
      Non-Perturbative Methods in Strongly Coupled Gauge Theories
    • Place of Presentation
      The Galileo Glilei Institute for Theoretical Physics
    • Year and Date
      2008-06-19
  • [Presentation] Decoupling Limit in String Theory and the Mass Hierarchies2008

    • Author(s)
      江口徹
    • Organizer
      IHES 50周年記念事業
    • Place of Presentation
      パリ
    • Year and Date
      2008-06-16
  • [Presentation] Properties of Baryons from D-branes and Instantons2008

    • Author(s)
      Shigeki Sugimoto
    • Organizer
      32nd Johns Hopkins Workshop "Perspectives in String Theory"
    • Place of Presentation
      Seoul National University
    • Year and Date
      2008-05-30
  • [Presentation] Brane inflation in string gosmology2008

    • Author(s)
      Shinji Mukohyama
    • Organizer
      Quarks 2008
    • Place of Presentation
      Sergiev Posad, Russia
    • Year and Date
      2008-05-24
  • [Presentation] Properties of Baryons from D-branes and Instantons2008

    • Author(s)
      Shigeki Sugimoto
    • Organizer
      Continuous Advances in QCD (CAQCD-08)
    • Place of Presentation
      University of Minnesota
    • Year and Date
      2008-05-17
  • [Presentation] Brane inflation in string gosmology2008

    • Author(s)
      Shinji Mukohyama
    • Organizer
      Japan-France joint workshop on Cosmology of the Early Universe
    • Place of Presentation
      Nikko(日光)
    • Year and Date
      2008-05-14

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Published: 2010-06-11   Modified: 2016-04-21  

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