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2009 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)

Co-Investigator(Kenkyū-buntansha) 佐々木 節  京都大学, 基礎物理学研究所, 教授 (70162386)
杉本 茂樹  東京大学, 数物連携宇宙研究機構, その他(特任教授) (80362408)
白水 徹也  京都大学, 大学院・理学研究科, 准教授 (10282716)
高柳 匡  東京大学, 数物連携宇宙研究機構, その他(特任准教授) (10432353)
向山 信治  東京大学, 数物連携宇宙研究機構, その他(特任准教授) (40396809)
Keywords超弦理論 / 量子重力 / Dブレイン / ハドロン / インフレーション宇宙 / 高次元ブラックホール / AdS / CFT / 原始磁場
Research Abstract

1.江口は、N=4、N=2超共形代数の表現論を用いてハイパーケーラー多様体、カラビ-ヤウ多様体の幾何学を調べ、これらの多様体の楕円種数の規約表現分解を導いた.規約表現分解は非BPS表現については無限和の形を持つが、その展開係数A_nが表現の共形次元nと共に指数関数的に増大する事、特に2k次元のハイパーケーラー多様体についてはA_nがexp(2π√kn)の用に振る舞い、D1D5ブレーンがK3曲面に巻き付いて出来るブラックホールのエントロピーの振る舞いと一致する事を示した[論文1,3,4].
2.佐々木は、高次元時空理論に基づく動的な解を求め,その宇宙論的意義を追及した。
その結果,動的なコンパクト化を与えるモデルが存在することを示し,現実的な宇宙論モデル構築への第一歩を与えた。また,4次元有効理論を念頭に,高次の時空曲率の任意関数で与えられる理論を考え,そのハミルトン形式を定式化した。
3.杉本は、超弦理論を用いてゲージ群がO(N), USp(N)である場合の量子色力学を解析する方法を提案し、対称性の自発的破れやバリオンの安定性など、場の理論から期待されるさまざまな性質をうまく再現することを示した。ゲージ理論と弦理論の間の双対性が超対称性がない場合にも有用であることを示す新たな証拠となる。
4.白水は、超弦理論から時空は高次元であることが示唆されており、それらの基本的な性質の研究が望まれている。そこで、近似的に実現されると考えられる漸近的に平坦な時空の構造、特にその対称性と保存則について明らかにした。
5.高柳は、最近盛んに研究されているAdS/CFTの物性物理への応用に関する研究を行った。特に、スケール不変性が非等方な場合(リフシッツ理論)に拡張されたAdS/CFTの一例が超弦理論の枠組みで実現できることを示した。また、高温超伝導体などに見られる絶対零度における超伝導/絶縁体相転移がAdS/CFTを用いて記述できることを示した。
6.向山は、rapid-rollインフレーション模型への観測からの制限や、弦理論に基づくCurvaton模型の提唱など、弦理論的インフレーション宇宙論について研究を行なった。また、フラックスコンパクト化の安定性や、新しい量子重力理論(Horava-Lifshitz理論)に基づく宇宙論についても研究を行なった。

  • Research Products

    (54 results)

All 2010 2009

All Journal Article (23 results) (of which Peer Reviewed: 23 results) Presentation (30 results) Book (1 results)

  • [Journal Article] N=2 Superconformal Algebra and the Entropy of Calabi-Yau Manifolds2010

    • Author(s)
      Tohru Eguchi, Kazuhiro Hikami
    • Journal Title

      Letters in Mathematical Physics

    • Peer Reviewed
  • [Journal Article] Penner Type Matrix Model and Seiberg-Witten Theory2010

    • Author(s)
      Tohru Eguchi, Kazunobu Maruyoshi
    • Journal Title

      Journal of High Energy Physics 1002:022

    • Peer Reviewed
  • [Journal Article] N=4 Superconformal Algebra and the Entropy of HyperKahler Manifolds2010

    • Author(s)
      Tohru Eguchi, Kazuhiro Hikami
    • Journal Title

      Journal of High Energy Physics 1002:019

    • Peer Reviewed
  • [Journal Article] Boosted perturbations at the end of inflation2010

    • Author(s)
      I.Zaballa, M.Sasaki
    • Journal Title

      Journal of Cosmology and Astroparticle Physics 03,002

    • Peer Reviewed
  • [Journal Article] Hamiltonian formulation of f(Riemann)theories of gravity2010

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

      Progress of Theoretical Physics 123

      Pages: 169-185

    • Peer Reviewed
  • [Journal Article] Holographic superconductor/insulator transition at zero temperature2010

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

      Journal of High Energy Physics 03

      Pages: 1-23

    • Peer Reviewed
  • [Journal Article] Boundary transitions of the O(n)model on a dynamical lattice2010

    • Author(s)
      Jean-Emile Bourgine, Kazuo Hosomichi, Ivan Kostov
    • Journal Title

      Nuclear Physics B 832

      Pages: 462-499

    • Peer Reviewed
  • [Journal Article] Superconformal Algebras and Mock Theta Functions 2.Rademacher Expansion for K3 Surface2009

    • Author(s)
      Tohru Eguchi, Kazuhiro Hikami
    • Journal Title

      Commun Number Theor and Phys 3

      Pages: 531-554

    • Peer Reviewed
  • [Journal Article] 米国滞在の想いで2009

    • Author(s)
      Tohru Eguchi
    • Journal Title

      数理科学11月号"物理の道しるべ第12回" 557

      Pages: 78-83

    • Peer Reviewed
  • [Journal Article] Spin polarization effects in micro black hole evaporation2009

    • Author(s)
      A.Flachi, M.Sasaki, T.Tanaka
    • Journal Title

      Journal of High Energy Physics 0905,031

    • Peer Reviewed
  • [Journal Article] Dynamical Compactification and Inflation in Einstein-Yang-Mills Theor with Higher Derivative Coupling2009

    • Author(s)
      H.Kihara, M.Nitta, M.Sasaki, C.M.Yoo, I.Zaballa
    • Journal Title

      Physical Review D 80,066004

    • Peer Reviewed
  • [Journal Article] ynamical D4-D8 and D3-D7 branes in supergravity2009

    • Author(s)
      P.Binetruy, M.Sasaki, K.Uzawa
    • Journal Title

      Physical Review D 80,026001

    • Peer Reviewed
  • [Journal Article] Nuclear Force from String Theory2009

    • Author(s)
      Koji Hashimoto, Tadakatsu Sakai, Shigeki Sugimoto
    • Journal Title

      Progress of Theoretical Physics 122

      Pages: 427-476

    • Peer Reviewed
  • [Journal Article] O(N)and USp(N)QCD from String Theory2009

    • Author(s)
      Toshiya Imoto, Tadakatsu Sakai, Shigeki Sugimoto
    • Journal Title

      Progress of Theoretical Physics 122

      Pages: 1433-1453

    • Peer Reviewed
  • [Journal Article] Asymptotic flatness at spatial infinity in higher dimensions2009

    • Author(s)
      K.Tanabe, N.Tanahashi, T.Shiromizu
    • Journal Title

      Journal of Mathematical Physics 50

      Pages: 0725021-16

    • Peer Reviewed
  • [Journal Article] The Riemannian Penrose inequality and a virtual gravitational collapse2009

    • Author(s)
      S.Ohashi, T.Shiromizu, S.Yamada
    • Journal Title

      Physical Review D 80

      Pages: 047501 1-4

    • Peer Reviewed
  • [Journal Article] Primordial magnetic field from non-inflationary cosmic expansion in Horava-Lifshitz gravity2009

    • Author(s)
      S.Maeda, S.Mukohyama, T.Shiromizu
    • Journal Title

      Physical Review D 80

      Pages: 123538 1-8

    • Peer Reviewed
  • [Journal Article] Fractional Quantum Hall Effect via Holography : Chern-Simons, Edge States, and Hierarchy2009

    • Author(s)
      M.Fujita, W.Li, S.Ryu, T.Takayanagi
    • Journal Title

      Journal of High Energy Physics 06

    • Peer Reviewed
  • [Journal Article] ABJM with Flavors and FQHE2009

    • Author(s)
      Y.Hikida, W.Li, T.Takayanagi
    • Journal Title

      Journal of High Energy Physics 07

    • Peer Reviewed
  • [Journal Article] On String Theory Duals of Lifshitz-like Fixed Points2009

    • Author(s)
      T.Azeyanagi, W.Li, T.Takayanagi
    • Journal Title

      Journal of High Energy Physics 06

    • Peer Reviewed
  • [Journal Article] Holographic Entanglement Entropy : An Overview2009

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

      Journal of Physics A A42

      Pages: 504008 1-35

    • Peer Reviewed
  • [Journal Article] Topological String on OSP(1/2)/U(1)2009

    • Author(s)
      G.Giribet, T.Takayanagi
    • Journal Title

      Journal of High Energy Physics 09

      Pages: 1-22

    • Peer Reviewed
  • [Journal Article] Some No-go Theorems for String Duals of Non-relativistic Lifshitz-like Theories2009

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

      Journal of High Energy Physics 10

      Pages: 1-17

    • Peer Reviewed
  • [Presentation] Superconformal Algebra and Entropy of manifolds with Reduced Holonomy2010

    • Author(s)
      江口徹
    • Organizer
      第24回大阪素粒子セミナー
    • Place of Presentation
      大阪市立大学
    • Year and Date
      2010-03-24
  • [Presentation] Boundary transitions of the O(n)model on a dynamical lattice2010

    • Author(s)
      細道和夫
    • Organizer
      KEK理論研究会2010
    • Place of Presentation
      高エネルギー加速器研究機構
    • Year and Date
      2010-03-10
  • [Presentation] Holographic QCDの最近の話題2010

    • Author(s)
      杉本茂樹
    • Organizer
      第三回超弦理論と宇宙
    • Place of Presentation
      兵庫県城崎温泉志なのや
    • Year and Date
      2010-02-20
  • [Presentation] Lifshitz 固定点のAdS/CFTへの応用2010

    • Author(s)
      高柳匡
    • Organizer
      研究会 第三回 超弦理論と宇宙
    • Place of Presentation
      城崎温泉、旅館「志なのや」
    • Year and Date
      2010-02-18
  • [Presentation] Penner type Matrix Model and Seiberg-Witten Theory2010

    • Author(s)
      江口徹
    • Organizer
      Komaba2010 Recent Developments in Strings and Fields ―On the occasion of Y.Kazama's 60th birthday―
    • Place of Presentation
      東京大学駒場キャンパス
    • Year and Date
      2010-02-13
  • [Presentation] Entanglement Entropy and Topological Insulators from String Theory2010

    • Author(s)
      高柳匡
    • Organizer
      IPMU Focus Week, Condensed Matter Physics Meets High Energy Physics
    • Place of Presentation
      東京大学数物連携宇宙研究機構(IPMU)
    • Year and Date
      2010-02-12
  • [Presentation] 超弦理論と現代数学2010

    • Author(s)
      江口徹
    • Organizer
      東京大学理学部物理学教室談話会
    • Place of Presentation
      東京大学理学部
    • Year and Date
      2010-01-29
  • [Presentation] Mesons as Open Strings2010

    • Author(s)
      杉本茂樹
    • Organizer
      弦理論研究会(2010)
    • Place of Presentation
      立教大学
    • Year and Date
      2010-01-06
  • [Presentation] O(N)and USp(N)QCD from String Theory2009

    • Author(s)
      杉本茂樹
    • Organizer
      APCTP Focus Program "Aspects of Holography and Gauge/string duality"
    • Place of Presentation
      APCTP Headquarters, POSTECH, Korea
    • Year and Date
      20090727-20090728
  • [Presentation] Holographic Insulator/Superconductor Phase Transition at Zero Temperature2009

    • Author(s)
      高柳匡
    • Organizer
      AdS/CFT : strongly coupled systems and exact results
    • Place of Presentation
      Institut Henri Poincare, Paris, France
    • Year and Date
      2009-11-26
  • [Presentation] アインシュタインと宇宙の謎2009

    • Author(s)
      江口徹
    • Organizer
      慶応大学自然科学研究教育センター開所記念シンポジウム"自然科学の多様性と楽しさ"
    • Place of Presentation
      慶応大学日吉キャンパス
    • Year and Date
      2009-11-20
  • [Presentation] アインシュタインと宇宙の謎2009

    • Author(s)
      江口徹
    • Organizer
      物理科学の最前線
    • Place of Presentation
      東北大学理学部
    • Year and Date
      2009-11-13
  • [Presentation] Boundary transitions of the O(n)model on a dynamical lattice2009

    • Author(s)
      細道和夫
    • Organizer
      Facets of Integrability
    • Place of Presentation
      CEA Saclay(Gif-sur-Yvette, France)
    • Year and Date
      2009-11-06
  • [Presentation] Our Universe is Not Expanding!?2009

    • Author(s)
      Misao Sasaki
    • Organizer
      11th Italian-Korean Symposium on Relativistic Astrophysics : The Sun, the Stars, the Universe and General Relativity
    • Place of Presentation
      Sogang University, Seoul, Korea
    • Year and Date
      2009-11-03
  • [Presentation] 宇宙の謎に迫る ブレーンワールド2009

    • Author(s)
      白水徹也
    • Organizer
      信州大学理学部講演会
    • Place of Presentation
      信州大学
    • Year and Date
      2009-10-27
  • [Presentation] Holographic Insulator/Superconductor Phase Transition at Zero Temperature2009

    • Author(s)
      高柳匡
    • Organizer
      Branes, Strings and Black holes
    • Place of Presentation
      京都大学基礎物理学研究所
    • Year and Date
      2009-10-09
  • [Presentation] Superconformal Algebra and Entropy of Hyper Kahler Manifolds2009

    • Author(s)
      江口徹
    • Organizer
      The 5^<th> Conference on Flavor Physics
    • Place of Presentation
      Hanoi University of Science, Hanoi, Vietnam
    • Year and Date
      2009-09-25
  • [Presentation] In Memory of Prof.Kazuhiko Nishijima2009

    • Author(s)
      江口徹
    • Organizer
      The 5^<th> Conference on Flavor Physics
    • Place of Presentation
      Hanoi University of Science, Hanoi, Vietnam
    • Year and Date
      2009-09-25
  • [Presentation] Can we really have string theory duals of non-relativistic fixed points?2009

    • Author(s)
      高柳匡
    • Organizer
      NIMS-APCTP Joint International workshop "String Theory and Cosmology"
    • Place of Presentation
      Daejeon, Korea
    • Year and Date
      2009-09-24
  • [Presentation] Colloquim in Cosmology : Theory of Cosmological Perturbations2009

    • Author(s)
      Misao Sasaki
    • Organizer
      Corfu Summer Institute : 2nd School and Workshop on Quantum Gravity and Quantum Geometry
    • Place of Presentation
      Mon-Repos, Corfu, Greece
    • Year and Date
      2009-09-07
  • [Presentation] A Thought on Conformal Frames2009

    • Author(s)
      Misao Sasaki
    • Organizer
      Challenges in Theoretical Cosmology
    • Place of Presentation
      Tufts Institute of Cosmology, Talloires, France
    • Year and Date
      2009-09-02
  • [Presentation] Holographic Entanglement Entropy, Fractional Quantum Hall Effect, and Lifshitz-like Fixed Points2009

    • Author(s)
      高柳匡
    • Organizer
      Quantum Theory and Symmetries 6
    • Place of Presentation
      ケンタッキー大学、USA
    • Year and Date
      2009-07-23
  • [Presentation] Mock Theta functions and Superconformal Algebra2009

    • Author(s)
      江口徹
    • Organizer
      Quantum Theory and Symmetries 6
    • Place of Presentation
      Kentucky University, USA
    • Year and Date
      2009-07-22
  • [Presentation] Holographic Entanglement Entropy2009

    • Author(s)
      高柳匡
    • Organizer
      KITP miniprogram, "Quantum Criticality and the AdS/CFT Correspondence'
    • Place of Presentation
      Kavli 理論物理学研究所、UC Santa Barbara, USA
    • Year and Date
      2009-07-20
  • [Presentation] Non-Gaussianity from Inflation2009

    • Author(s)
      Misao Sasaki
    • Organizer
      The Unity of the Universe
    • Place of Presentation
      ICG, University of Portsmouth, UK
    • Year and Date
      2009-06-29
  • [Presentation] Boundary phenomena in the dilute O(n)matrix model2009

    • Author(s)
      細道和夫
    • Organizer
      Conformal Field Theory, Integrable Models and Liouville gravity
    • Place of Presentation
      Landau Institute(Chernogolovka, Russia)
    • Year and Date
      2009-06-28
  • [Presentation] Holographic Lifshitz-like Fixed Points in String Theory and Entanglement Entropy2009

    • Author(s)
      高柳匡
    • Organizer
      Frontiers in Black Hole Physics
    • Place of Presentation
      JINR, Dubna, Russia
    • Year and Date
      2009-05-26
  • [Presentation] Non-Gaussian Curvature Perturbations from Multi-Brid Inflation2009

    • Author(s)
      Misao Sasaki
    • Organizer
      4th International Sakharov Conference on Physics
    • Place of Presentation
      Lebedev Institute, Moscow, Russia
    • Year and Date
      2009-05-18
  • [Presentation] Dynamical Symmetry Breaking in Holographic QCD with Orientifolds2009

    • Author(s)
      杉本茂樹
    • Organizer
      Joint Theory Institute workshop on "Dynamical Symmetry Breaking"
    • Place of Presentation
      Argonne National Laboratory, USA
    • Year and Date
      2009-04-15
  • [Presentation] Non-gaussianity from multi-brid inflation2009

    • Author(s)
      Misao Sasaki
    • Organizer
      Focus week on non-Gaussianities in the sky
    • Place of Presentation
      IPMU柏
    • Year and Date
      2009-04-08
  • [Book] 宇宙の謎に挑む ブレーンワールド2009

    • Author(s)
      白水徹也
    • Total Pages
      184
    • Publisher
      化学同人

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Published: 2011-06-16   Modified: 2016-04-21  

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