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Construction of dark energy model based on vector-tensor theories

Research Project

Project/Area Number 17K14297
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionTokyo University of Science

Principal Investigator

KASE Ryotaro  東京理科大学, 理学部第二部物理学科, 講師 (10756406)

Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords暗黒エネルギー / 修正重力理論 / ブラックホール / 中性子星 / インフレーション / 拡張重力理論 / 宇宙論 / 重力理論 / ブラックホール摂動論 / 宇宙物理
Outline of Final Research Achievements

In this research project, we focused on the construction of dark energy model based on vector-tensor theories in which a vector field and a gravitational field (tensor field) are directly coupled. We focused not only on the large scale associated with cosmology but also on small scale local objects such as black holes and neutron stars, which are closely related to gravitational wave observations showing the remarkable development in recent years. As a result, in the research period is from April 2017 to March 2021, a total of 26 original papers and 1 review paper have been published. In addition, for the purpose of disseminating these results, we gave four invited talk at international conferences, three research presentations at academic conferences, and hosted two research meetings.

Academic Significance and Societal Importance of the Research Achievements

宇宙の加速膨張という未知の現象の発見から約20年が経過したが,この源である暗黒エネルギーに関して現存する全ての観測データと整合性のある理論模型は依然見つかっていない.修正重力理論に基づく暗黒エネルギー模型に関しては,これまでスカラー場を導入した理論が多くの研究されてきたが,本研究ではベクトル場を導入した理論に着目して研究を行い,ベクトル場が宇宙論的なダイナミクスやブラックホール,中性子星に与える固有の影響を包括的に明らかにした.これらの研究成果は将来の高精度な観測結果を用いた両理論の観測的区別を可能にしており,今世紀の物理学最大の課題の一つである暗黒エネルギーの起源解明に一歩近づいたと言える.

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

    (46 results)

All 2021 2020 2019 2018 2017 Other

All Int'l Joint Research (8 results) Journal Article (27 results) (of which Int'l Joint Research: 17 results,  Peer Reviewed: 27 results,  Open Access: 5 results) Presentation (7 results) (of which Int'l Joint Research: 4 results,  Invited: 4 results) Remarks (4 results)

  • [Int'l Joint Research] CENTRA, Universidade de Lisboa(ポルトガル)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Universidad Antonio Narino/Universidad del Valle(コロンビア)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] CENTRA, Universidade de Lisboa/Universidade de Lisboa(ポルトガル)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] ETH Zurich(スイス)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] McGill University(カナダ)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] University of Portsmouth(英国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] ETH, Zurich(スイス)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] Lisbon, CENTRA(ポルトガル)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Instability of compact stars with a nonminimal scalar-derivative coupling2021

    • Author(s)
      Ryotaro Kase, Shinji Tsujikawa
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 01, 008 Issue: 01 Pages: 1-28

    • DOI

      10.1088/1475-7516/2021/01/008

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Neutron stars with a generalized Proca hair and spontaneous vectorization2020

    • Author(s)
      Ryotaro Kase, Masato Minamitsuji, Shinji Tsujikawa
    • Journal Title

      Physical Review D

      Volume: 102, 024067 Issue: 2 Pages: 1-18

    • DOI

      10.1103/physrevd.102.024067

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Stability of relativistic stars with scalar hairs2020

    • Author(s)
      Ryotaro Kase, Rampei Kimura, Seiga Sato, Shinji Tsujikawa
    • Journal Title

      Physical Review D

      Volume: 102, 084037 Issue: 8 Pages: 1-24

    • DOI

      10.1103/physrevd.102.084037

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] General formulation of cosmological perturbations in scalar-tensor dark energy coupled to dark matter2020

    • Author(s)
      Ryotaro Kase, Shinji Tsujikawa
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 11, 032 Issue: 11 Pages: 1-32

    • DOI

      10.1088/1475-7516/2020/11/032

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Scalar-Field Dark Energy Nonminimally and Kinetically Coupled to Dark Matter2020

    • Author(s)
      Ryotaro Kase, Shinji Tsujikawa
    • Journal Title

      Physical Review D

      Volume: 101, 063511 Issue: 6 Pages: 1-22

    • DOI

      10.1103/physrevd.101.063511

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Weak cosmic growth in coupled dark energy with a Lagrangian formulation2020

    • Author(s)
      Kase Ryotaro、Tsujikawa Shinji
    • Journal Title

      Physics Letters B

      Volume: 804 Pages: 135400-135400

    • DOI

      10.1016/j.physletb.2020.135400

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anisotropic 2-form dark energy2019

    • Author(s)
      Juan P.Beltran Almeida, Alejandro Guarnizo, Ryotaro Kase, Shinji Tsujikawa, Cesar A. Valenzuela-Toledo
    • Journal Title

      Physics Letters B

      Volume: 793 Pages: 396-404

    • DOI

      10.1016/j.physletb.2019.05.008

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Neutron stars in f(R) gravity and scalar-tensor theories2019

    • Author(s)
      Ryotaro Kase, Shinji Tsujikawa
    • Journal Title

      JCAP

      Volume: 09, 054 Issue: 09 Pages: 1-28

    • DOI

      10.1088/1475-7516/2019/09/054

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Coupled vector dark energy2019

    • Author(s)
      Shintaro Nakamura, Ryotaro Kase, Shinji Tsujikawa
    • Journal Title

      JCAP

      Volume: 12, 032 Issue: 12 Pages: 1-30

    • DOI

      10.1088/1475-7516/2019/12/032

    • NAID

      130008157335

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Anisotropic inflation with coupled p?forms2019

    • Author(s)
      Almeida Juan P. Beltran、Guarnizo Alejandro、Kase Ryotaro、Tsujikawa Shinji、Valenzuela-Toledo C?sar A.
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2019 Issue: 03 Pages: 025-025

    • DOI

      10.1088/1475-7516/2019/03/025

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Constraints on massive vector dark energy models from integrated Sachs-Wolfe-galaxy cross-correlations2019

    • Author(s)
      Nakamura Shintaro、De Felice Antonio、Kase Ryotaro、Tsujikawa Shinji
    • Journal Title

      Physical Review D

      Volume: 99 Issue: 6 Pages: 1-18

    • DOI

      10.1103/physrevd.99.063533

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dark energy in Horndeski theories after GW170817: A review2019

    • Author(s)
      Kase Ryotaro、Tsujikawa Shinji
    • Journal Title

      International Journal of Modern Physics D

      Volume: 28 Issue: 05 Pages: 1942005-1942005

    • DOI

      10.1142/s0218271819420057

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Tracker and scaling solutions in DHOST theories2019

    • Author(s)
      Frusciante Noemi、Kase Ryotaro、Koyama Kazuya、Tsujikawa Shinji、Vernieri Daniele
    • Journal Title

      Physics Letters B

      Volume: 790 Pages: 167-175

    • DOI

      10.1016/j.physletb.2019.01.009

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Relativistic stars in vector-tensor theories2018

    • Author(s)
      Kase Ryotaro、Minamitsuji Masato、Tsujikawa Shinji
    • Journal Title

      Physical Review D

      Volume: 97 Issue: 8 Pages: 1-17

    • DOI

      10.1103/physrevd.97.084009

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dark energy scenario consistent with GW170817 in theories beyond Horndeski gravity2018

    • Author(s)
      Kase Ryotaro、Tsujikawa Shinji
    • Journal Title

      Physical Review D

      Volume: 97 Issue: 10 Pages: 1-19

    • DOI

      10.1103/physrevd.97.103501

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Odd-parity stability of hairy black holes in U(1) gauge-invariant scalar-vector-tensor theories2018

    • Author(s)
      Heisenberg Lavinia、Kase Ryotaro、Tsujikawa Shinji
    • Journal Title

      Physical Review D

      Volume: 97 Issue: 12 Pages: 1-14

    • DOI

      10.1103/physrevd.97.124043

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Black holes in quartic-order beyond-generalized Proca theories2018

    • Author(s)
      Kase Ryotaro、Minamitsuji Masato、Tsujikawa Shinji
    • Journal Title

      Physics Letters B

      Volume: 782 Pages: 541-550

    • DOI

      10.1016/j.physletb.2018.05.078

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Stable cosmological solutions in degenerate theory of gravity2018

    • Author(s)
      Kase Ryotaro、Kimura Rampei、Naruko Atsushi、Yoshida Daisuke
    • Journal Title

      Physics Letters B

      Volume: 783 Pages: 320-325

    • DOI

      10.1016/j.physletb.2018.07.009

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cosmology in scalar-vector-tensor theories2018

    • Author(s)
      Heisenberg Lavinia、Kase Ryotaro、Tsujikawa Shinji
    • Journal Title

      Physical Review D

      Volume: 98 Issue: 2 Pages: 1-15

    • DOI

      10.1103/physrevd.98.024038

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dark energy in scalar-vector-tensor theories2018

    • Author(s)
      Kase Ryotaro、Tsujikawa Shinji
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2018 Issue: 11 Pages: 024-024

    • DOI

      10.1088/1475-7516/2018/11/024

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Gauge-ready formulation of cosmological perturbations in scalar-vector-tensor theories2018

    • Author(s)
      Heisenberg Lavinia、Kase Ryotaro、Tsujikawa Shinji
    • Journal Title

      Physical Review D

      Volume: 98 Issue: 12 Pages: 1-25

    • DOI

      10.1103/physrevd.98.123504

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Most general cubic-order Horndeski Lagrangian allowing for scaling solutions and the application to dark energy2018

    • Author(s)
      Frusciante Noemi、Kase Ryotaro、Nunes Nelson J.、Tsujikawa Shinji
    • Journal Title

      Physical Review D

      Volume: 98 Issue: 12 Pages: 1-17

    • DOI

      10.1103/physrevd.98.123517

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Black hole perturbations in vector-tensor theories: the odd-mode analysis2018

    • Author(s)
      Ryotaro Kase, Masato Minamitsuji, Shinji Tsujikawa, and Ying-li Zhang
    • Journal Title

      JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS

      Volume: 1802,48 Issue: 02 Pages: 1-37

    • DOI

      10.1088/1475-7516/2018/02/048

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Cosmology in beyond-generalized Proca theories2017

    • Author(s)
      Shintaro Nakamura, Ryotaro Kase, and Shinji Tsujikawa
    • Journal Title

      PHYSICAL REVIEW D

      Volume: 95, 104001 Issue: 10 Pages: 1-22

    • DOI

      10.1103/physrevd.95.104001

    • NAID

      130006711475

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Black holes in vector-tensor theories2017

    • Author(s)
      Lavinia Heisenberg, Ryotaro Kase, Masato Minamitsuji, Shinji Tsujikawa
    • Journal Title

      JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS

      Volume: 1708, 24 Issue: 08 Pages: 1-38

    • DOI

      10.1088/1475-7516/2017/08/024

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Hairy black-hole solutions in generalized Proca theories2017

    • Author(s)
      Lavinia Heisenberg, Ryotaro Kase, Masato Minamitsuji, Shinji Tsujikawa
    • Journal Title

      PHYSICAL REVIEW D

      Volume: 96, 084049 Issue: 8 Pages: 1-6

    • DOI

      10.1103/physrevd.96.084049

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Suppression of matter couplings with a vector field in generalized Proca theories2017

    • Author(s)
      Nakamura Shintaro、Kase Ryotaro、Tsujikawa Shinji
    • Journal Title

      Physical Review D

      Volume: 96 Issue: 8 Pages: 1-18

    • DOI

      10.1103/physrevd.96.084005

    • NAID

      130007648509

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Weak cosmic growth in coupled dark energy with a Lagrangian formulation2020

    • Author(s)
      Ryotaro Kase
    • Organizer
      7th Korea-Japan Workshop on Dark Energy
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Weak cosmic growth in coupled dark energy with a Lagrangian formulation2020

    • Author(s)
      加瀬竜太郎
    • Organizer
      日本物理学会 第75回年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Coupled vector dark energy2020

    • Author(s)
      中村進太郎
    • Organizer
      日本物理学会 第75回年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Neutron stars in f(R) gravity and scalar-tensor theories2019

    • Author(s)
      Ryotaro Kase
    • Organizer
      6th Korea-Japan workshop on dark energy at KMI
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Gauge-ready formulation of cosmological perturbations in scalar-vector-tensor theories2019

    • Author(s)
      加瀬竜太郎
    • Organizer
      日本物理学会 第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Dark energy in vector-tensor theories2017

    • Author(s)
      Ryotaro Kase
    • Organizer
      13th Rencontres du Vietnam -Cosmology 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Cosmology in generalized Proca theories and its extension2017

    • Author(s)
      Ryotaro Kase
    • Organizer
      4th Korea-Japan joint workshop on Dark Energy at KMI
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Remarks] 東京理科大学 教員紹介

    • URL

      https://www.tus.ac.jp/academics/teacher/p/inde3.php?6bb5

    • Related Report
      2020 Annual Research Report
  • [Remarks] 東京理科大学教員プロフィール

    • URL

      https://www.tus.ac.jp/fac_grad/p/achievement.php?6bb5

    • Related Report
      2019 Research-status Report
  • [Remarks] 東京理科大学 教員プロファイル

    • URL

      https://www.tus.ac.jp/fac_grad/p/achievement.php?6bb5

    • Related Report
      2018 Research-status Report
  • [Remarks] 加瀬 竜太郎 | 論文・著書・学会発表 | 東京理科大学

    • URL

      https://www.tus.ac.jp/fac_grad/p/achievement.php?6bb5

    • Related Report
      2017 Research-status Report

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

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