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Study of quantum radiation produced by nonlocal correlations of quantum fields

Research Project

Project/Area Number 17K05444
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionKyushu University (2019-2020)
Hiroshima University (2017-2018)

Principal Investigator

Yamamoto Kazuhiro  九州大学, 理学研究院, 教授 (50284154)

Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsウンルー効果 / 曲がった時空上の場の量子論 / 量子もつれ / 揺動散逸関係 / デコヒーレンス / 光学機械振動子 / 量子場の非局所相関 / スピノル場のウンルー効果 / 重力波のウンルー効果 / 重力の量子性 / ド・ジッター時空 / 非局所相関 / エンタングルメント / 量子真空物理 / 量子エンタングルメント / 重力
Outline of Final Research Achievements

Focusing on the Unruh effect, in which relativity and quantum theory play important roles at the same time, we clarified the structure of nonlocal correlation created by the quantum entanglement of the vacuum of the quantum field and the existence of quantum radiation caused by it. For the first time, we gave descriptions of the four-dimensional Minkowski vacua of gravitational waves and spinor fields as well as scalar fields as quantum entangled states of Rindler space-time and Kasner space-time. We developed the description of the Bunch-Davies vacuum of the scalar field on the de Sitter space-time as a quantum entanglement states of the left and right static charts, and we revealed the quantum radiation caused by the quantum entanglement generated from the accelerating Unruh-De Witt detector that interacts the field in de Sitter space.

Academic Significance and Societal Importance of the Research Achievements

ホーキング放射の類似としてウンルー効果の検証は、重力と相互作用する量子系が持つ性質を解明する上で重要である。ウンルー効果は、量子場の真空の量子もつれに起因しているので、スカラー場のみならず、現実的なスピノル場や重力波の量子場の真空の量子もつれによる記述は、ウンルー効果が関わる理論予言の際に役立つ成果である。また、ウンルー・ドウィット検出器による量子場の量子もつれの検証に関する理論模型が、重力の量子性の検証実験のために提案された理論模型と構造が似ていることに着目し、ニュートン重力による量子系の量子もつれの生成やデコヒーレンス進化を明らかにした。これは今後の重力の量子性の検証研究に役立つ。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (34 results)

All 2021 2020 2019 2018 2017 Other

All Int'l Joint Research (4 results) Journal Article (9 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 9 results,  Open Access: 9 results) Presentation (19 results) (of which Int'l Joint Research: 10 results,  Invited: 3 results) Book (1 results) Funded Workshop (1 results)

  • [Int'l Joint Research] NCUE, Taiwan/University of Maryland/National Central University, Taiwan(その他の国・地域)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] York University(英国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] NCUE Taiwan(台湾)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] York University(英国)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Gravitational waves in Kasner spacetimes and Rindler wedges in Regge-Wheeler gauge: Formulation of Unruh effect2021

    • Author(s)
      Sugiyama Yuuki、Yamamoto Kazuhiro、Kobayashi Tsutomu
    • Journal Title

      Physical Review D

      Volume: 103 Issue: 8 Pages: 1-20

    • DOI

      10.1103/physrevd.103.083503

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Entanglement and decoherence of massive particles due to gravity2021

    • Author(s)
      Daisuke Miki, Akira Matsumura, Kazuhiro Yamamoto
    • Journal Title

      Physical Review D

      Volume: 103 Issue: 2

    • DOI

      10.1103/physrevd.103.026017

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Gravity-induced entanglement in optomechanical systems2020

    • Author(s)
      Akira Matsumura, Kazuhiro Yamamoto
    • Journal Title

      Physical Review D

      Volume: 102 Issue: 10

    • DOI

      10.1103/physrevd.102.106021

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Large-scale inhomogeneity of dark energy produced in the ancestor vacuum2019

    • Author(s)
      Yue Nan, Kazuhiro Yamamoto, Hajime Aoki, Satoshi Iso, ; Daisuke, Yamauchi
    • Journal Title

      Physical Review D

      Volume: 99 Issue: 10 Pages: 103512-103512

    • DOI

      10.1103/physrevd.99.103512

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Fluctuation-dissipation and correlation-propagation relations in (1 + 3)D moving detector-quantum field systems2019

    • Author(s)
      Jen-Tsung, Hsiang, B. L. Hu, Shih-Yuin Lin, Kazuhiro Yamamoto,
    • Journal Title

      Physics Letters B

      Volume: 795 Pages: 694-699

    • DOI

      10.1016/j.physletb.2019.06.062

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Late-time quantum radiation by a uniformly accelerated detector in de Sitter spacetime2018

    • Author(s)
      Shumpei Yamaguchi, Rumi Tatsukawa, Shih-Yui Lin, Kazuhiro Yamamoto
    • Journal Title

      Physical Review D

      Volume: 98 Issue: 10 Pages: 105012-105012

    • DOI

      10.1103/physrevd.98.105012

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Vacuum state in de Sitter spacetime with static charts2018

    • Author(s)
      Atsushi Higuchi and Kazuhiro Yamamoto
    • Journal Title

      Physical Review D

      Volume: 98 Issue: 6 Pages: 065014-065014

    • DOI

      10.1103/physrevd.98.065014

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Entanglement of the Vacuum between Left, Right, Future, and Past: The Origin of Entanglement-Induced Quantum Radiation2017

    • Author(s)
      Atsushi Higuchi, Satoshi Iso, Kazushige Ueda, Kazuhiro Yamamoto
    • Journal Title

      Physical Review D

      Volume: 96 Issue: 8 Pages: 083531-083531

    • DOI

      10.1103/physrevd.96.083531

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Entanglement-induced quantum radiation2017

    • Author(s)
      Satoshi Iso, Rumi Tatsukawa, Kazushige Ueda, Kazuhiro Yamamoto
    • Journal Title

      Physical Review D

      Volume: 96 Issue: 4 Pages: 045001-045001

    • DOI

      10.1103/physrevd.96.045001

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] カスナー時空とリンドラー領域における重力波によるUnruh効果2021

    • Author(s)
      杉山祐紀, 山本一博, 小林努
    • Organizer
      日本物理学会 2021年春季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Gravity-induced entanglement in optomechanical systems2021

    • Author(s)
      Akira Matsumura
    • Organizer
      RQI-Online 2020/21
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Entanglement and decoherence due to gravity2021

    • Author(s)
      Daisuke Miki
    • Organizer
      RQI-Online 2020/21
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The Unruh effect from GWs in Rindler and Kasner spacetime2020

    • Author(s)
      Yuuki Sugiyama, Kazuhiro Yamamoto, Tsutomu Kobayashi
    • Organizer
      Japan General Relativity and Gravitation (ONLINE JGRG)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 4次元リンドラー時空とカスナー時空におけるディラック場の真空の量子もつれ2020

    • Author(s)
      上田和茂, 山本一博, 樋口淳, 南岳, Ar Rohim
    • Organizer
      日本物理学会 2020年秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 光学振動子系における重力による量子もつれ2020

    • Author(s)
      松村央, 山本一博
    • Organizer
      日本物理学会 2020年秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Vacuum state as entangled state between left, right, future and past2019

    • Author(s)
      Kazuhiro Yamamoto
    • Organizer
      Quantum Entanglement in Cosmology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Fluctuation-dissipation and correlation-propagation relations in (1+3)D moving detector- quantum field systems2019

    • Author(s)
      Kazuhiro Yamamoto
    • Organizer
      The 29th Workshop on General Relativity and Gravitation in Japan
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 曲がった時空上の場の量子論と一般化された揺動散逸関係2019

    • Author(s)
      山本一博
    • Organizer
      量子情報と宇宙
    • Related Report
      2019 Research-status Report
  • [Presentation] リンドラー時空とカスナー時空におけるディラック場の真空の量子もつれ~ディラック場のウンルー効果の起源~2019

    • Author(s)
      上田和茂, 樋口淳, 南岳, 山本一博
    • Organizer
      日本物理学会第74回年次大会(2019年)
    • Related Report
      2018 Research-status Report
  • [Presentation] Quantum radiation produced by detector and particle in a uniformly accelerated motion2019

    • Author(s)
      Kazuhiro Yamamoto
    • Organizer
      Workshop on Testing the Unruh Effect in the Lab.
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 場の真空の量子エンタングルメントの研究2018

    • Author(s)
      上田和茂, 樋口淳, 磯暁, 山本一博, 達川瑠美
    • Organizer
      第38回量子情報技術研究会 (QIT38)
    • Related Report
      2018 Research-status Report
  • [Presentation] Quantum radiation produced by nonlocal correlation of field2018

    • Author(s)
      Kazuhiro Yamamoto
    • Organizer
      Quantum Fields in Curved Space
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Thermal property of Brownian motion of a particle coupled to vacuum fluctuations2018

    • Author(s)
      Kazuhiro Yamamoto
    • Organizer
      The NCTS workshop on Non-Equilibrium Quantum Phenomena
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Entanglement description of the vacuum states in de Sitter space with static charts2018

    • Author(s)
      山本一博
    • Organizer
      量子情報と宇宙
    • Related Report
      2018 Research-status Report
  • [Presentation] uantum radiation produced by an Unruh De Witt detector in a uniformly accelerated motion2018

    • Author(s)
      山本一博
    • Organizer
      Miniworkshop: Cosmology, Gravitation and Quantum Information
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Quantum radiation produced by uniformly accelerating detector and particle2018

    • Author(s)
      山本一博
    • Organizer
      重力・宇宙論研究会 2018
    • Related Report
      2017 Research-status Report
  • [Presentation] ウンルー効果とエンタングルメント2017

    • Author(s)
      山本一博
    • Organizer
      曲がった時空上の場の量子論と量子情報研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] ENTANGLEMENT-INDUCED QUANTUM RADIATION2017

    • Author(s)
      山本一博
    • Organizer
      The Relativistic Quantum Information North (RQIN 2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Book] 量子力学-現代的アプローチ-2017

    • Author(s)
      牟田 泰三. 山本 一博
    • Total Pages
      316
    • Publisher
      裳華房
    • ISBN
      9784785322533
    • Related Report
      2017 Research-status Report
  • [Funded Workshop] Quantum Fields in Curved Space2018

    • Related Report
      2018 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2022-08-18  

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