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Non-perturbative and background-independent formulation of quantum gravity and its general problems

Research Project

Project/Area Number 21740157
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  茨城大学, 教育学部, 准教授 (10391731)

Project Period (FY) 2009 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords素粒子(理論) / 素粒子論 / 量子基礎論 / 国際研究者交流 デンマーク / 国際情報交換 デンマーク / 素粒子諭
Research Abstract

In complex action theory we proposed the mechanism to automatically obtain a hermitian Hamiltonian after a long time development, and constructed a new bra-ket formalism, by which we can deal with complex coordinate and momentum properly. Furthermore, we showed that for a large time interval between the final and initial times a diagonal element in the future-included theory is almost equal to an expectation value in the future-not-included theory defined with a modified inner product.

Report

(5 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (32 results)

All 2013 2012 2011 2010 Other

All Journal Article (8 results) (of which Peer Reviewed: 8 results) Presentation (18 results) Remarks (6 results)

  • [Journal Article] Holger Bech Nielsen, Theory Including Future Not Excluded : Formulation of Complex Action Theory II2013

    • Author(s)
      Keiichi Nagao
    • Journal Title

      Prog. Theor. Exp. Phys.

      Volume: 023B04 Issue: 2 Pages: 1-21

    • DOI

      10.1093/ptep/pts084

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Holger Bech Nielsen, Correspondence between future-included and future-not-included theories2012

    • Author(s)
      Keiichi Nagao
    • Journal Title

      Proc.Bled 2012:What Comes Beyond the Standard Models

      Pages: 86-93

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Holger Bech Nielsen, Momentum and Hamiltonian in Complex Action Theory2012

    • Author(s)
      Keiichi Nagao
    • Journal Title

      Int. Mod. Phys.

      Volume: 27 Issue: 14 Pages: 12500761-30

    • DOI

      10.1142/s0217751x12500765

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Correspondence between future-included and future-not-included theories2012

    • Author(s)
      Keiichi Nagao, Holger Bech Nielsen
    • Journal Title

      Proceedings to the 15 the workshop, What comes Beyond the Standard Models, Bled, July 9-19, 2012

      Volume: 13 Pages: 86-93

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Holger Bech Nielsen, Formulation of Complex Action Theory2011

    • Author(s)
      Keiichi Nagao
    • Journal Title

      Prog. Theor. Phys.

      Volume: 126 Issue: 6 Pages: 1021-1049

    • DOI

      10.1143/ptp.126.1021

    • NAID

      110008897247

    • Related Report
      2012 Final Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Holger Bech Nielsen, Automatic Hermiticity2011

    • Author(s)
      Keiichi Nagao
    • Journal Title

      Prog.Theor.Phys.

      Volume: 125 Issue: 3 Pages: 633-640

    • DOI

      10.1143/ptp.125.633

    • NAID

      110008513374

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Automatic Hermiticity2011

    • Author(s)
      Keiichi Nagao, Holger Bech Nielsen
    • Journal Title

      Progress of Theoretical Physics

      Volume: 125 Pages: 633-640

    • NAID

      110008513374

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Complex Action Functioning as Cutoff and De Broglie-Bohm Particle2010

    • Author(s)
      H.B.Nielsen, N.S.Mankoc Borstnik, K.Nagao and G.Moultaka
    • Journal Title

      Proc.Bled 2010:What Comes Beyond the Standard Models

      Pages: 211-216

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Presentation] Theory Including Future Not Excluded2013

    • Author(s)
      Keiichi Nagao
    • Organizer
      KEK理論研究会2013
    • Place of Presentation
      高エネルギー加速器研究機構(KEK)
    • Year and Date
      2013-03-19
    • Related Report
      2012 Final Research Report
  • [Presentation] Theory Including Future Not Excluded2013

    • Author(s)
      永尾敬一
    • Organizer
      KEK理論研究会2013
    • Place of Presentation
      高エネルギー加速器研究機構(KEK)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Formulation of complex action theory2013

    • Author(s)
      永尾敬一
    • Organizer
      The 15 the workshop, What comes Beyond the Standard Models, Bled, July 9-19, 2012
    • Place of Presentation
      Plemelj's house, Bled, Sloveni
    • Related Report
      2012 Annual Research Report
  • [Presentation] Holger Bech Nielsen, Theory Including Future Not Excluded2012

    • Author(s)
      Keiichi Nagao
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      京都産業大学
    • Year and Date
      2012-09-11
    • Related Report
      2012 Final Research Report
  • [Presentation] Formulation of complex action theory2012

    • Author(s)
      Keiichi Nagao
    • Organizer
      Bled 2012: What comes Beyond the Standard Models
    • Place of Presentation
      Plemelj's house, Bled, Slovenia
    • Year and Date
      2012-07-10
    • Related Report
      2012 Final Research Report
  • [Presentation] Formulation of Complex Action Theory2012

    • Author(s)
      Keiichi Nagao
    • Organizer
      QMKEK2012 量子論の諸問題と今後の発展
    • Place of Presentation
      高エネルギー加速器研究機構(KEK)
    • Year and Date
      2012-03-17
    • Related Report
      2012 Final Research Report 2011 Annual Research Report
  • [Presentation] Formulation of Complex Action Theory2012

    • Author(s)
      Keiichi Nagao
    • Organizer
      KEK理論研究会2012
    • Place of Presentation
      高エネルギー加速器研究機構(KEK)
    • Year and Date
      2012-03-06
    • Related Report
      2012 Final Research Report 2011 Annual Research Report
  • [Presentation] Automatic Hermiticity2012

    • Author(s)
      Keiichi Nagao
    • Organizer
      基礎物理学研究所研究会「物理と情報の階層構造-情報を接点とした諸階層の制御と創発-」
    • Place of Presentation
      京都大学基礎物理学研究所
    • Year and Date
      2012-01-07
    • Related Report
      2012 Final Research Report 2011 Annual Research Report
  • [Presentation] Theory Including Future Not Excluded2012

    • Author(s)
      永尾敬一,Holger Bech Nielsen
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      京都産業大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] Holger Bech Nielsen, Momentum and Hamiltonian in Complex Action Theory2011

    • Author(s)
      Keiichi Nagao
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      弘前大学
    • Year and Date
      2011-09-18
    • Related Report
      2012 Final Research Report
  • [Presentation] Holger Bech Nielsen, Formulation of Complex Action Theory2011

    • Author(s)
      Keiichi Nagao
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      弘前大学
    • Year and Date
      2011-09-18
    • Related Report
      2012 Final Research Report
  • [Presentation] Holger Bech Nielsen, Automatic Hermiticity2011

    • Author(s)
      Keiichi Nagao
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      弘前大学
    • Year and Date
      2011-09-18
    • Related Report
      2012 Final Research Report
  • [Presentation] Automatic Hermiticity2011

    • Author(s)
      Keiichi Nagao, Holger Bech Nielsen
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      弘前大学
    • Year and Date
      2011-09-18
    • Related Report
      2011 Annual Research Report
  • [Presentation] Formulation of Complex Action Theory2011

    • Author(s)
      Keiichi Nagao, Holger Bech Nielsen
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      弘前大学
    • Year and Date
      2011-09-18
    • Related Report
      2011 Annual Research Report
  • [Presentation] Momentum and Hamiltonian in Complex Action Theory2011

    • Author(s)
      Keiichi Nagao, Holger Bech Nielsen
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      弘前大学
    • Year and Date
      2011-09-18
    • Related Report
      2011 Annual Research Report
  • [Presentation] Automatic Hermiticity2011

    • Author(s)
      Keiichi Nagao
    • Organizer
      KEK理論研究会2011
    • Place of Presentation
      日の予定であったが震災のため中止(研究会HP上で発表原稿が公開), 高エネルギー加速器研究機構(KEK)
    • Year and Date
      2011-03-15
    • Related Report
      2012 Final Research Report
  • [Presentation] Automatic Hermiticity2011

    • Author(s)
      Keiichi Nagao
    • Organizer
      KEK理論研究会2011
    • Place of Presentation
      高エネルギー加速器研究機構(会合は中止、発表は成立と見なされた HP上で公開)
    • Year and Date
      2011-03-15
    • Related Report
      2010 Annual Research Report
  • [Presentation] Automatic Hermiticity2011

    • Author(s)
      Keiichi Nagao
    • Organizer
      NBI Theoretical High Energy Seminar
    • Place of Presentation
      ニールス・ボーア研究所
    • Year and Date
      2011-02-03
    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

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

    • Related Report
      2012 Final Research Report
  • [Remarks]

    • URL

      http://arxiv.org/a/nagao_k_1.atom

    • Related Report
      2012 Final Research Report
  • [Remarks] Keiichi Nagao's articles on arXiv

    • URL

      http://arxiv.org/a/nagao_k_1.atom

    • Related Report
      2012 Annual Research Report
  • [Remarks]

    • URL

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

    • Related Report
      2011 Annual Research Report
  • [Remarks]

    • URL

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

    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

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

    • Related Report
      2009 Annual Research Report

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Published: 2009-04-01   Modified: 2019-07-29  

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