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Nonperturbative study of superstring and quantum gravity

Research Project

Project/Area Number 18740127
Research Category

Grant-in-Aid for Young Scientists (B)

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

Principal Investigator

NAGAO Keiichi  Ibaraki University, 教育学部, 准教授 (10391731)

Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥2,740,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥240,000)
Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2007: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2006: ¥1,000,000 (Direct Cost: ¥1,000,000)
Keywords素粒子(理論) / 超弦理論 / 行列模型 / 非可換幾何 / 格子ゲージ理論 / 素粒子
Research Abstract

非可換CP2と2次元非可換球面の両方を古典解に持つような8次元の行列模型において、時空とゲージ群の力学的生成と安定性を数値計算による非摂動論的アプローチと1-loopの摂動計算による解析的アプローチの両面から調べ、この行列模型の非摂動ダイナミクスを明らかにした。また、行列模型におけるカイラルフェルミオンの定式化を念頭に、格子ゲージ理論において4+2次元で定式化されているvortex fermionの考察を行った。そして、ゼロモード解は余分の2次元空間には依存せずvortex核の所に一つしか存在しないという結果を得た。

Report

(4 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (10 results)

All 2008 2006 Other

All Journal Article (6 results) (of which Peer Reviewed: 3 results) Presentation (1 results) Remarks (3 results)

  • [Journal Article] Erratum to: "Vortex fermion on the lattice"[Nuclear Physics B636 (2002) 264.290]2008

    • Author(s)
      Keiichi Nagao
    • Journal Title

      Nuclear Physics B800

      Pages: 401-404

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Ginsparg-Wilson Relation and Admissibility Condition in Noncommutative Geometry2008

    • Author(s)
      Keiichi Nagao
    • Journal Title

      Progress of Theoretical Physics Supplement 171

      Pages: 232-235

    • NAID

      110006632535

    • Related Report
      2008 Final Research Report
  • [Journal Article] Erratum to : "Vortex fermion on the lattice"[Nuclear Physics B636 (2002) 264-290]2008

    • Author(s)
      Keiichi Nagao
    • Journal Title

      Nuclear Physics B 800

      Pages: 401-404

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ginsparg-Wilson Relation and Admissibility Condition in Nonco mmutative Geometry2008

    • Author(s)
      Keiichi Nagao
    • Journal Title

      Progress of Theoretical Physics Supplement 171

      Pages: 232-235

    • NAID

      110006632535

    • Related Report
      2007 Annual Research Report
  • [Journal Article] Dynamical aspects of the fuzzy CP2 in the large N reduced model with a cubic term2006

    • Author(s)
      Takehiro Azuma、Subrata Bal、Keiichi Nagao and Jun Nishimura
    • Journal Title

      Journal of High Energy Physics 0605:061

      Pages: 1-27

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Dynamical aspects of the fuzzy CP^2 in the large N reduced model with a cubic term2006

    • Author(s)
      東武大, Subrata Bal, 永尾敬一, 西村淳
    • Journal Title

      Journal of High Energy Physics JHEP 0605:061

      Pages: 27-27

    • Related Report
      2006 Annual Research Report
  • [Presentation] Ginsparg-Wilson Relation and Admissibility Condition in Noncommutative Geometry2006

    • Author(s)
      Keiichi Nagao
    • Organizer
      Noncommutative Geometry and Quantum Spacetime in Physics 21st Nishinomiya-Yukawa、Memorial Symposium on Theoretical Physics
    • Place of Presentation
      夙川公民館
    • Year and Date
      2006-11-14
    • Related Report
      2008 Final Research Report
  • [Remarks] 茨城大学研究者情報総覧

    • URL

      http://info.ibaraki.ac.jp/Profiles/12/0001140/profile.html

    • Related Report
      2008 Final Research Report
  • [Remarks] 茨城大学研究者情報総覧

    • URL

      http://info.ibaraki.ac.jp/scripts/websearch/index.htm

    • Related Report
      2008 Annual Research Report
  • [Remarks] 茨城大学研究者情報総覧

    • URL

      http://info.ibaraki.ac.jp/scripts/websearch/index.htm

    • Related Report
      2007 Annual Research Report

URL: 

Published: 2006-04-01   Modified: 2016-04-21  

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