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Extension of the standard model based on scale invariance

Research Project

Project/Area Number 16K05315
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 InstitutionUniversity of Toyama (2018)
Kanazawa University (2016-2017)

Principal Investigator

Kubo Jisuke  富山大学, 大学院理工学研究部(理学), 客員教授 (40211213)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords素粒子の標準理論の拡張 / スケール不変性 / 背景重力波 / 素粒子 / 暗黒物質 / 重力波 / 標準理論の拡張 / 宇宙の相転移 / 素粒子論 / 質量の起源 / バリオン数非対称性
Outline of Final Research Achievements

Scale invariant extension of the standard model (SM) with a strongly interacting non-abelian gauge hidden sector, in which the scale symmetry or the chiral symmetry is spontaneously broken, has been considered.
The scale, generated in the hidden gauge sector, is transmitted to the SM sector. Because of the SB of the symmetry in the hidden sector there exist pseudo Nambu-Goldstone (NG) bosons, and we have shown that these pseudo NG bosons can be a good dark matter (DM) candidate. In this way we have obtained a unified description of genesis of the EW energy scale and the DM. The SB of the scale symmetry appears as a cosmological phase transition (PT) in the early Universe. We have found that the gravitational wave background produced by this PT can be measured in various experiments that are currently running or planed for the future. These results have attracted many researchers in the field and stimulate international collaborations.

Academic Significance and Societal Importance of the Research Achievements

素粒子の標準模型に登場する素粒子の質量はヒッグス機構を介して生成される。しかし、この質量エネルギーは宇宙全体のエネルギーの約0.1%にすぎない。当研究において、標準模型をスケール不変性に基づき(質量の次元を持ったパラメータが存在しない理論に)拡張することによって暗黒物質の質量も含めた宇宙全体のエネルギーの約30%に相当するエネルギーの起源を統一的に説明できることを示した。また、宇宙初期でのスケール不変性の自発的な破れは相転移として現れ、宇宙背景重力波が生成される。この背景重力波は現在稼働しているKARGA等の実験や将来計画又は思案されているDECIGO等の実験で観測可能であることも指摘した。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (19 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (2 results) Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 1 results,  Acknowledgement Compliant: 2 results) Presentation (7 results) (of which Int'l Joint Research: 6 results,  Invited: 5 results) Funded Workshop (3 results)

  • [Int'l Joint Research] マックスプランク研究所、ハイデルベルク(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] ハイデルベルク大学(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Physics beyond the standard model may be described by a massless QFT2019

    • Author(s)
      Jisuke Kubo
    • Journal Title

      Nuclear Physics B

      Volume: 941 Pages: 911-917

    • DOI

      10.1016/j.nuclphysb.2018.01.013

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Gravitational Waves from First-Order Phase Transitions: LIGO as a Window to Unexplored Seesaw Scales2019

    • Author(s)
      Vedran Brdar, Alexander J. Helmboldt and Jisuke Kubo
    • Journal Title

      Journal of Cosmology and Astroparticle Physics (JCAP)

      Volume: 1902 Issue: 02 Pages: 021-021

    • DOI

      10.1088/1475-7516/2019/02/021

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Non-perturbative electroweak-scalegenesis on the test bench of dark matter detection2018

    • Author(s)
      Kubo Jisuke、Soesanto Qidir Maulana Binu and Yamada Masatoshi
    • Journal Title

      The European Physical Journal C

      Volume: 78 Issue: 3

    • DOI

      10.1140/epjc/s10052-018-5713-4

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Scale and confinement phase transitions in scale invariant SU(N) scalar gauge theory2018

    • Author(s)
      Jisuke Kubo and Masatoshi Yamada
    • Journal Title

      Journal of High Energy Physics (JHEP)

      Volume: 2018, 03 Issue: 10

    • DOI

      10.1007/jhep10(2018)003

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Multicomponent Dark Matter in Radiative Seesaw Models2017

    • Author(s)
      Mayumi Aoki, Daiki Kaneko and Jisuke Kubo
    • Journal Title

      Frontiers in Physics

      Volume: 5 Pages: 53-53

    • DOI

      10.3389/fphy.2017.00053

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Genesis of electroweak and dark matter scales from a bilinear scalar condensate2016

    • Author(s)
      Jisuke Kubo, Masatoshi Yamada
    • Journal Title

      Physical Review D

      Volume: 93 Issue: 7 Pages: 1-6

    • DOI

      10.1103/physrevd.93.075016

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Scale genesis and gravitational wave in a classically scale invariant extension of the standard model2016

    • Author(s)
      Jisuke Kubo and Masatoshi Yamada
    • Journal Title

      JCAP

      Volume: 1612 Issue: 12 Pages: 001-001

    • DOI

      10.1088/1475-7516/2016/12/001

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Conformal Gravity and Inflation2019

    • Author(s)
      Jisuke Kubo
    • Organizer
      Toyama International Symposium on "Physics at the Cosmic Frontier"
    • Related Report
      2018 Annual Research Report
  • [Presentation] Scale-Genesis - Origin of Gravitational Waves2018

    • Author(s)
      Jisuke Kubo
    • Organizer
      Conference on Particles and Cosmology
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Gravitational Waves from Dark Matter Genesis2018

    • Author(s)
      Jisuke Kubo
    • Organizer
      Particle, Astroparticle and Cosmology Tallinn Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Scale-Genesis; the Origin of Gravitational Wave2018

    • Author(s)
      Jisuke Kubo
    • Organizer
      Conference on Particles and Cosmology
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Dynamical scale symmetry breaking and scale phase transition2017

    • Author(s)
      Jisuke Kubo
    • Organizer
      Scalars2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Some memories of Prof. Zimmermann from Japan2017

    • Author(s)
      Jisuke Kubo
    • Organizer
      Wolfhart Zimmermann Memorial Symposium
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Electroweak scale genesis by dynamical scale symmetry breaking and strong scale phase transition in the early universe2016

    • Author(s)
      Jisuke Kubo
    • Organizer
      The 13th International Symposium on Cosmology and Particle Astrophysics
    • Place of Presentation
      Sydney, Australia
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Funded Workshop] The 23rd International Summer Institute on Phenomenology of Elementary Particles and Cosmology2017

    • Related Report
      2017 Research-status Report
  • [Funded Workshop] 13th International Symposium on Cosmology and Particle Astrophysics2016

    • Place of Presentation
      Sydney, Australia
    • Year and Date
      2016-11-28
    • Related Report
      2016 Research-status Report
  • [Funded Workshop] 22nd International Summer Institute on Phenomenology of Elementary Particle Physics and Cosmology2016

    • Place of Presentation
      Xi-Tou, Taiwan
    • Year and Date
      2016-08-17
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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