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A field-theoretic description of evaporating black holes based on matter and gravity dynamics

Research Project

Project/Area Number 18K13550
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Yokokura Yuki  国立研究開発法人理化学研究所, 数理創造プログラム, 上級研究員 (50775616)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywordsブラックホール / 量子重力 / 半古典的アインシュタイン方程式 / エントロピー / 情報問題 / 対称性 / 低エネルギー有効理論 / 非摂動解 / 非摂動 / アノマリー / 高階微分相互作用 / ホーキング輻射 / 平均場近似 / 量子多体系 / 場の理論
Outline of Final Research Achievements

We aimed to understand the true picture of black holes is from the quantum dynamics of matter and gravity. First, by taking into account the evaporating nature and solving the semi-classical Einstein equations in a non-perturbative manner for Planck's constant, it was shown that a large pressure is generated by the vacuum quantum fluctuations induced with the strong curvatures of a collapsing matter, to form a dense object without a horizon. This can be considered as a black hole. Next, various perturbative quantum effects on a classical black hole with a horizon were investigated from the viewpoint of effective field theory, and it was shown that the conventional horizon picture is inconsistent. Then, a thermodynamic effective description of the time evolution of quantum many-body systems was constructed, where entropy is characterized by symmetry in quantum theory.

Academic Significance and Societal Importance of the Research Achievements

ブラックホールの正体は不明である。古典力学に基づく概念であるホライズンの存在は現在の観測精度で確認されておらず、またブラックホールは有限のエントロピーを持つため量子多体系であるはずだ。その正体を理解するには本質的に量子論から考えねばならない。本研究では第一原理から再考し量子効果が本質的な役割を担う高密度物体というブラックホール描像に到達した。これは将来の観測で確認でき、また情報問題を具体的に調べる枠組みを与える。これは従来の古典的描像の限界によっても支持される。さらにエントロピーの対称性はブラックホールにも適用できる。本研究成果は量子論・重力理論・熱力学が密接に関わる領域で役立つはずだ。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (42 results)

All 2023 2022 2021 2020 2019 2018 Other

All Int'l Joint Research (5 results) Journal Article (9 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 8 results,  Open Access: 8 results) Presentation (27 results) (of which Int'l Joint Research: 16 results,  Invited: 8 results) Remarks (1 results)

  • [Int'l Joint Research] National Taiwan University(その他の国・地域 (台湾))

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] National Taiwan University(その他の国・地域(台湾))

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] National Taiwan University(その他の国・地域 (台湾))

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] National Taiwan University(その他の国・地域(台湾))

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Perimeter Institute(カナダ)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Planckian physics comes into play at Planckian distance from horizon2022

    • Author(s)
      Ho Pei-Ming、Kawai Hikaru、Yokokura Yuki
    • Journal Title

      Journal of High Energy Physics

      Volume: 2022 Issue: 1 Pages: 1-22

    • DOI

      10.1007/jhep01(2022)019

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Interior metric of slowly formed black holes in a heat bath2022

    • Author(s)
      Kawai Hikaru、Yokokura Yuki
    • Journal Title

      Physical Review D

      Volume: 105 Issue: 4 Pages: 1-14

    • DOI

      10.1103/physrevd.105.045017

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Firewall from Effective Field Theory2021

    • Author(s)
      Ho Pei-Ming、Yokokura Yuki
    • Journal Title

      Universe

      Volume: 7 Issue: 7 Pages: 241-241

    • DOI

      10.3390/universe7070241

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Distance between collapsing matter and apparent horizon in evaporating black holes2021

    • Author(s)
      Ho Pei-Ming、Matsuo Yoshinori、Yokokura Yuki
    • Journal Title

      Physical Review D

      Volume: 104 Issue: 6 Pages: 064005-064005

    • DOI

      10.1103/physrevd.104.064005

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Black Hole as a Quantum Field Configuration2020

    • Author(s)
      Kawai Hikaru、Yokokura Yuki
    • Journal Title

      Universe

      Volume: 6 Issue: 6 Pages: 1-70

    • DOI

      10.3390/universe6060077

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] An Analytic Description of Semi-Classical Black-Hole Geometry2020

    • Author(s)
      Pei-Ming Ho, Yoshinori Matsuo, Yuki Yokokura
    • Journal Title

      Physical Review D

      Volume: 102 Issue: 2 Pages: 024090-024090

    • DOI

      10.1103/physrevd.102.024090

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Thermodynamical path integral and emergent symmetry2019

    • Author(s)
      Shin-ichi Sasa, Sho Sugiura, Yuki Yokokura
    • Journal Title

      Physical Review E

      Volume: 99 Issue: 2 Pages: 022109-022109

    • DOI

      10.1103/physreve.99.022109

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Back Reaction of 4D Conformal Fields on Static Geometry2018

    • Author(s)
      Pei-Ming Ho, Hikaru Kawai, Yoshinori Matsuo, Yuki Yokokura
    • Journal Title

      JHEP

      Volume: 1811 Issue: 11 Pages: 056-056

    • DOI

      10.1007/jhep11(2018)056

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] ネーター保存量としての熱力学エントロピー2018

    • Author(s)
      横倉祐貴
    • Journal Title

      物性研究・電子版

      Volume: 7

    • NAID

      120006542058

    • Related Report
      2018 Research-status Report
    • Open Access
  • [Presentation] Entropy-Area Law from Gravity of Information2023

    • Author(s)
      Yuki Yokokura
    • Organizer
      TJR workshop: Connecting the hierarchies: from cosmos to life, at Osaka University
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A semi-classical configuration satisfying the entropy-area law2023

    • Author(s)
      横倉祐貴
    • Organizer
      日本物理学会春[online]
    • Related Report
      2022 Annual Research Report
  • [Presentation] A semi-classical model of quantum black holes2022

    • Author(s)
      Yuki Yokokura
    • Organizer
      Quantum Field Theory in Curved Spacetimes Workshop [online]
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Black Hole as a Bound state of Semi-classical Degrees of Freedom2022

    • Author(s)
      Yuki Yokokura
    • Organizer
      Loops22, at ENS, Lyon
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Entropy-Area Law from Interior Semi-classical Degrees of Freedom2022

    • Author(s)
      Yuki Yokokura
    • Organizer
      NTU-Kyoto/Kawai-fest, at National Taiwan University, Taipei
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Entropy-Area Law from Gravity of Information2022

    • Author(s)
      横倉祐貴
    • Organizer
      場の理論と弦理論2022、基礎物理学研究所
    • Related Report
      2022 Annual Research Report
  • [Presentation] Field Dynamics inside Evaporating Black Holes2022

    • Author(s)
      横倉祐貴
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Interior of Thermodynamical Black Holes2021

    • Author(s)
      Yuki Yokokura
    • Organizer
      String theory, gravity and cosmology 2021, in Posco International Center
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Interior of Typical Black Holes2021

    • Author(s)
      Yuki Yokokura
    • Organizer
      16th Marcel Grossmann Meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Universality of Interior Metric of Typical Black Holes2021

    • Author(s)
      Yuki Yokokura
    • Organizer
      Strings and Fields 2021 at YITP
    • Related Report
      2021 Research-status Report
  • [Presentation] Interior of Typical Black Holes2021

    • Author(s)
      横倉祐貴
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Black Hole as a Quantum Field Configuration2020

    • Author(s)
      Yuki Yokokura
    • Organizer
      KEK Theory Workshop 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Black Hole as a Quantum Field Configuration2020

    • Author(s)
      Yuki Yokokura
    • Organizer
      4th International Conference on Holography, String theory and Discrete approach in Hanoi
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Black Hole as a Quantum Field Configuration2020

    • Author(s)
      Yuki Yokokura
    • Organizer
      Strings and Fields 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Black Hole as a Quantum Field Configuration2020

    • Author(s)
      横倉祐貴
    • Organizer
      日本物理学会秋大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Black Hole as a Quantum Field Configuration2019

    • Author(s)
      Yuki Yokokura
    • Organizer
      Strings and Fields 2019 (YITP)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Self-Consistent Description Of Time Evolution Of Black Holes Including Collapsing Matter and Hawking Radiation2019

    • Author(s)
      Yuki Yokokura
    • Organizer
      GR22 (Valencia)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Black Hole as a Quantum Field Configuration2019

    • Author(s)
      Yuki Yokokura
    • Organizer
      1-day workshop on Quatum Gravity (RIKEN)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Black Hole as a Quantum Field Configuration2019

    • Author(s)
      横倉祐貴
    • Organizer
      日本物理学会秋季大会(山形大学)
    • Related Report
      2019 Research-status Report
  • [Presentation] Thermodynamical Path Integral and Emergent Symmetry2019

    • Author(s)
      横倉祐貴
    • Organizer
      日本物理学会秋季大会(山形大学)
    • Related Report
      2019 Research-status Report
  • [Presentation] A Self-consistent Model of Evaporating Black Holes2019

    • Author(s)
      横倉祐貴
    • Organizer
      第三回若手による重力・宇宙論研究会(基礎物理学研究所)
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Entropy inside evaporating black holes2018

    • Author(s)
      Yuki Yokokura
    • Organizer
      One day workshop of quantum field theory and strings(大阪市大)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ネーター保存量としての熱力学エントロピー2018

    • Author(s)
      横倉祐貴
    • Organizer
      第63回物性夏の学校(西浦)
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] A self-consistent solution of evaporating black holes2018

    • Author(s)
      Yuki Yokokura
    • Organizer
      Sigrav2018 (Sardinia)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Energy-momentum tensor inside evaporating black holes2018

    • Author(s)
      Yuki Yokokura
    • Organizer
      Strings and Fields 2018(基礎物理学研究所)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] A self-consistent solution of evaporating black holes2018

    • Author(s)
      Yuki Yokokura
    • Organizer
      15th Marcel Grossmann Meeting (University of Roma)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 蒸発するブラックホール内部の物質場の厳密解2018

    • Author(s)
      横倉祐貴
    • Organizer
      日本物理学会 2018年秋季大会(信州大学)
    • Related Report
      2018 Research-status Report
  • [Remarks] 2020年7月8日 理化学研究所プレスリリース「 蒸発するブラックホールの内部を理論的に記述」

    • URL

      https://www.riken.jp/press/2020/20200708_3/index.html

    • Related Report
      2020 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2024-01-30  

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