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BSM as Weyl-invariant quantum field theory

Research Project

Project/Area Number 21K03539
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Research InstitutionUniversity of the Ryukyus

Principal Investigator

Oda Ichiro  琉球大学, 理学部, 教授 (40265517)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsワイル不変性をもつ量子重力理論 / ワイル不変性な量子重力理論 / ワイル不変な重力理論 / BRST量子化 / 自発的対称性の破れ / 標準理論を超える理論 / ワイル不変な理論
Outline of Research at the Start

Large Hadron Collider(LHC)での実験によって、2013年に質量が約125GeVのヒッグス粒子が発見されたが、超対称性粒子などの新粒子はいまだに発見されておらず、またその痕跡さえも観測されていない。これまでのLHCでの実験結果を総合すると、100GeV近辺で成り立つ標準理論がプランクエネルギーで成り立つ量子重力理論に直接結びついているような理論が有力になってきている。ワイル不変な量子場理論を構成することによって、「標準理論を超える理論」を構築することが本研究の目的である。

Outline of Final Research Achievements

We have studied a Weyl invariant quantum gravity. First of all, we have constructed a quantum gravity with the restricted Weyl symmetry, and then considered a issue of spontaneous symmetry breakdown. In addition to it, we have constructed a globally scale invariant quantum gravity and performed its BRST quantization. We have clarified the a huge global symmetry ISOp(10|10).
Finally, we have made a Weyl invariant quantum gravity, performed its BRST quantization and clarified its physical contents.

Academic Significance and Societal Importance of the Research Achievements

現代の素粒子物理学の重要な未解決な問題の一つに、量子力学と一般相対性理論を結び付けた量子重力理論の構成がある。我々は、特に一般座標変換不変性に加えて、局所的なスケール不変性を持つ量子重力理論を構成した。この理論を土台にして、重力理論の繰り込み可能性の問題の解明がなされる可能性がある。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (7 results)

All 2024 2023 2022 2021

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (1 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Quantum conformal gravity2024

    • Author(s)
      Ichiro Oda and Misaki Ohta
    • Journal Title

      Journal of High Energy Physics

      Volume: 2024 Issue: 2 Pages: 1-30

    • DOI

      10.1007/jhep02(2024)213

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Quantum scale invariant gravity in the de Donder gauge2022

    • Author(s)
      Ichiro Oda
    • Journal Title

      Physical Review D

      Volume: 105 Issue: 6

    • DOI

      10.1103/physrevd.105.066001

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Quantum theory of Weyl-invariant scalar-tensor gravity2022

    • Author(s)
      Ichiro Oda
    • Journal Title

      Physical Review D

      Volume: 105 Issue: 12

    • DOI

      10.1103/physrevd.105.126018

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] BRST formalism of Weyl conformal gravity2022

    • Author(s)
      Ichiro Oda and Philipp Saake
    • Journal Title

      Physical Review D

      Volume: 106 Issue: 10

    • DOI

      10.1103/physrevd.106.106007

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Quadratic gravity and restricted Weyl symmetry2021

    • Author(s)
      Arata Kamimura, Ichiro Oda
    • Journal Title

      Modern Physics Letters A

      Volume: 36 Issue: 19 Pages: 2150139-2150149

    • DOI

      10.1142/s021773232150139x

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Restricted Weyl symmetry and spontaneous symmetry breakdown of conformal symmetry2021

    • Author(s)
      Ichiro Oda
    • Journal Title

      Modern Physics Letters A

      Volume: 36 Issue: 28 Pages: 2150203-2150213

    • DOI

      10.1142/s0217732321502035

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] BRST formalism of Weyl invariant gravity2023

    • Author(s)
      Ichiro Oda
    • Organizer
      Workshop on the Standard Model and Beyond
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

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