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Catalytic decay of metastable Higgs vacuum

Research Project

Project/Area Number 17K05419
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

Principal Investigator

Ookouchi Yutaka  九州大学, 基幹教育院, 准教授 (40599990)

Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsブラックホール / ストリングクラウド / 時空の崩壊 / クインテッセンス / 触媒効果 / 真空崩壊 / ヒッグス真空 / 準安定状態 / 弦理論 / 素粒子論
Outline of Final Research Achievements

We studied the catalytic decay of metastable vacua. In particular, we discussed the inhomogeneous vacuum decay triggered by black holes and string clouds. Firstly, we applied this idea to creation of our four dimensional universe in five dimensions. This leads to remarkable fact that the bubble with very small cosmological constant is favored by the catalysis, provided that appropriate scales of the black hole and the cloud of strings are present. This can be used to solve the cosmological constant problem. Also, we applied it to decay of Higgs vacuum in four dimensions.

Academic Significance and Societal Importance of the Research Achievements

統一理論においてドジッター時空を構成することは,現在の宇宙を説明するためには必要なことである.その構成がと統一理論の候補である弦理論において大変困難であることがわかってきている.その中で,これまでとは別の方向性が模索され,高次元理論に生じるバブル上に我々の宇宙があるというシナリオが提案された.我々は高次元に物質が存在するとそれによる触媒効果が起こり,ある種類のバブルが生成されやすくなることを見つけた.それを用い現在の宇宙に存在する物質を再現するように5次元理論を構成すると,自動的に小さな宇宙定数をもつドジッター時空が生み出されることを示した.これを用いれば宇宙項問題が解決される可能性がある.

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

    (11 results)

All 2021 2020 2019 2018 2017 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results) Presentation (8 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results)

  • [Int'l Joint Research] Rutgers University(米国)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Instability of Higgs Vacuum via String Cloud2020

    • Author(s)
      Issei Koga, Sachiko Kuroyanagi, Yutaka Ookouchi
    • Journal Title

      Physics Letter B

      Volume: 800 Pages: 135093-135093

    • DOI

      10.1016/j.physletb.2019.135093

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Catalytic Creation of Baby Bubble Universe with Small Positive Cosmological Constant2019

    • Author(s)
      Issei Koga, Yutaka Ookouchi
    • Journal Title

      Journal of High Energy Physics

      Volume: 10 Issue: 10 Pages: 281-281

    • DOI

      10.1007/jhep10(2019)281

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Catalytic creation of bubble universe induced by quintessence in five dimensions2021

    • Author(s)
      古賀一成, 大河内豊
    • Organizer
      日本物理学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Catalytic Creation of Baby Bubble Universe with Small Positive Cosmological Constant2020

    • Author(s)
      大河内豊
    • Organizer
      Particle Physics and Cosmology 2020
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Catalytic Creation of Baby Bubble Universe with Small Positive Cosmological Constant2019

    • Author(s)
      大河内豊
    • Organizer
      KEK Theory 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Catalytic Creation of Baby Bubble Universe with Small Positive Cosmological Constant2019

    • Author(s)
      大河内豊
    • Organizer
      大阪市立大学 理学部 セミナー講演
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Decay of false vacua via impurities in string theories2018

    • Author(s)
      Yutaka Ookouchi
    • Organizer
      Corfu 2018 "The Workshop on the Standard Model and Beyond"
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Decay of false vacua via impurities in string theories2018

    • Author(s)
      Yutaka Ookouchi
    • Organizer
      Miami 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] KKLTシナリオの相転移現象における触媒効果2018

    • Author(s)
      棚橋典大, 大河内豊, 中井雄一郎
    • Organizer
      2018年日本物理学会 秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Decay of False Vacua via Impurities in String Landscape2017

    • Author(s)
      大河内豊
    • Organizer
      ニュートリノフロンティアの融合と進化
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2022-01-27  

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