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Deciphering string axiverse from multi-wavelength observations of gravitational waves

Research Project

Project/Area Number 19H01894
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Research InstitutionHigh Energy Accelerator Research Organization (2020-2022)
Nagoya University (2019)

Principal Investigator

Urakawa Yuko  大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 准教授 (80580555)

Co-Investigator(Kenkyū-buntansha) 北嶋 直弥  東北大学, 学際科学フロンティア研究所, 助教 (50737955)
西澤 篤志  東京大学, 大学院理学系研究科(理学部), 助教 (90569378)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000)
Fiscal Year 2022: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥12,870,000 (Direct Cost: ¥9,900,000、Indirect Cost: ¥2,970,000)
Keywordsアクシオン / 暗黒物質 / 重力波 / 超弦理論
Outline of Research at the Start

アクシオン場は、共鳴現象により観測可能な重力波を放出することが、浦川らによって示された。 超弦理論は異なる質量を持つ複数のアクシオン場の存在を予言するが、この場合には、複数の周波数にピークを持つ背景重力波が生成される。次世代の重力波観測を通じて、アクシオン宇宙の性質をどこまで解明でき、またその結果、超弦理論及び余剰次元空間の性質に関して、どのようなフィードバックが得られるのか、明らかにする。一方、重力波を放出するアクシオン場が宇宙を占める暗黒物質あるいはインフラトンであった場合、重力波観測から、暗黒物質/インフラトンの正体がアクシオン場であると、どの程度の信頼度で主張できるのか調べていく。

Outline of Final Research Achievements

We have deepen the knowledge of the generation mechanism of the gravitational wave from axions (Fukunaga, Kitajima, Urakawa 19) (Patel, Tashiro, Urakawa 19) and found that the gravitational wave from axion dark matter is indeed detectable by SKA (Soda, Kitajima, Urakawa 21). Furthermore, as an unexpected achievement, we have found new properties of QCD axion (Kogai, Kitajima, Urakawa 22), and proposed a new method for investigating axion dark matter (Basu, Goswami, Schwarz, Urakawa 21), which was then implemented for actual observations.

Academic Significance and Societal Importance of the Research Achievements

アクシオン宇宙及びアクシオン暗黒物質の新たな探査方法の確立に向けて一定の役割を果たすことができた。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (26 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (5 results) Journal Article (7 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (13 results) (of which Int'l Joint Research: 12 results,  Invited: 9 results) Funded Workshop (1 results)

  • [Int'l Joint Research] ビーレフェルト大学/テューリンゲン州天文台(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] ローマ サピエンサ大学(イタリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] アリゾナ州立大学(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] ソウル国立大学(韓国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] ビーレフェルト大学(ドイツ)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] New scenario of QCD axion clump formation. Part I. Linear analysis2022

    • Author(s)
      Kitajima Naoya、Kogai Kazuhiro、Urakawa Yuko
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2022 Issue: 03 Pages: 039-039

    • DOI

      10.1088/1475-7516/2022/03/039

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anisotropic separate universe and Weinberg's adiabatic mode2021

    • Author(s)
      Tanaka Takahiro、Urakawa Yuko
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2021 Issue: 07 Pages: 051-051

    • DOI

      10.1088/1475-7516/2021/07/051

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Resonant magnetogenesis from axions2020

    • Author(s)
      Patel Teerthal、Tashiro Hiroyuki、Urakawa Yuko
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2020 Issue: 01 Pages: 043-043

    • DOI

      10.1088/1475-7516/2020/01/043

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Constraining the gravitational coupling of axion dark matter at LIGO2020

    • Author(s)
      Jung Sunghoon、Kim TaeHun、Soda Jiro、Urakawa Yuko
    • Journal Title

      Physical Review D

      Volume: 102 Issue: 5 Pages: 1-15

    • DOI

      10.1103/physrevd.102.055013

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cosmological evolution of viable models in the generalized scalar-tensor theory2020

    • Author(s)
      Arai Shun、Karmakar Purnendu、Nishizawa Atsushi
    • Journal Title

      Physical Review D

      Volume: 102 Issue: 2 Pages: 1-10

    • DOI

      10.1103/physrevd.102.024003

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Stochastic inflation with an extremely large number of e-folds2020

    • Author(s)
      Kitajima Naoya、Tada Yuichiro、Takahashi Fuminobu
    • Journal Title

      Physics Letters B

      Volume: 800 Pages: 135097-135097

    • DOI

      10.1016/j.physletb.2019.135097

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Efficient self-resonance instability from axions2019

    • Author(s)
      Fukunaga Hayato、Kitajima Naoya、Urakawa Yuko
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2019 Issue: 06 Pages: 055-055

    • DOI

      10.1088/1475-7516/2019/06/055

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] delta N formalism for gravitational waves2022

    • Author(s)
      浦川優子
    • Organizer
      Non-linear aspects of cosmological gravitational waves
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] delta N formalism for gravitational waves2022

    • Author(s)
      浦川 優子
    • Organizer
      Non-linear aspects of cosmological gravitational waves
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Searching for ALP DM under strong gravitational lenses2021

    • Author(s)
      Yuko Urakawa
    • Organizer
      Workshop on Very Light Dark Matter
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] New scenario of axion minicluster formation2021

    • Author(s)
      Yuko Urakawa
    • Organizer
      YITP workshop Frontier of Particle Physics 2021
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Signature of axion dark matter through gravitational messenger2021

    • Author(s)
      Yuko Urakawa
    • Organizer
      RTG spring workshop
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Nano-Hz gravitational wave signature from axion dark matter2021

    • Author(s)
      Yuko Urakawa
    • Organizer
      CRC-TR 211 spring meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Axion like particle search from gravitational messenger2020

    • Author(s)
      Yuko Urakawa
    • Organizer
      Dark Odyssey 2020
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Coarse graining in cosmology2020

    • Author(s)
      Yuko Urakawa
    • Organizer
      From inflation to the Big Bang
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Gravitational wave forest from string axiverse2019

    • Author(s)
      Yuko Urakawa
    • Organizer
      Geometrical Tools for String Cosmology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Gravitational wave forest from string axiverse2019

    • Author(s)
      Yuko Urakawa
    • Organizer
      Resonance instability in cosmology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Gravitational wave forest from axions2019

    • Author(s)
      Naoya Kitajima
    • Organizer
      2 day mini-workshop: Axion Cosmology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Infrared universality of zeta in asymptotically FLRW universe2019

    • Author(s)
      Yuko Urakawa
    • Organizer
      15th Recontres du Vietnam
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Infrared universality of zeta in asymptotically FLRW universe2019

    • Author(s)
      Yuko Urakawa
    • Organizer
      Avenues of Quantum Field Theory in Curved Spacetime
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Funded Workshop] Resonance instability in cosmology2019

    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2024-01-30  

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