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Study of inflationary universe

Research Project

Project/Area Number 26400239
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 InstitutionThe University of Tokyo

Principal Investigator

Moroi Takeo  東京大学, 大学院理学系研究科(理学部), 教授 (60322997)

Project Period (FY) 2014-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords素粒子論的宇宙論 / インフレーション / 真空崩壊 / ビッグバン元素合成 / 高エネルギー宇宙線 / ニュートリノ / Peccei-Quinn 対称性 / flaxion / ビッグバン軽元素合成 / 暗黒物質 / 真空の崩壊 / 素粒子論 / 初期宇宙論 / 超対称模型
Outline of Final Research Achievements

In this project, inflationary universe has been studied based on most recent precise observation of our universe. In particular, the most important progresses are (1) the study of the beyond-the-standard-model (BSM) physics based on big-bang nucleosynthesis (BBN), and (2) the study of metastable vacuum.
For the BBN constraints on the BSM physics, constraints on the properties of long-lived particles have been derived in order not to spoil the success of the BBN scenario. In addition, upper bound on the reheating temperature after inflation has been derived in order not to overproduce gravitino in supersymmetric model.
For the decay rate of the metastable vacuum, a gauge invariant formulation of the calculation of the decay rate, which has not been known before, has been proposed. Then, such a formulation has been applied to the calculation of the decay rate of the electroweak vacuum in the standard model.

Report

(5 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (28 results)

All 2018 2017 2016 2015 2014

All Journal Article (17 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 17 results,  Open Access: 11 results,  Acknowledgement Compliant: 11 results) Presentation (11 results) (of which Int'l Joint Research: 5 results,  Invited: 10 results)

  • [Journal Article] Revisiting big-bang nucleosynthesis constraints on long-lived decaying particles2018

    • Author(s)
      Kawasaki Masahiro、Kohri Kazunori、Moroi Takeo、Takaesu Yoshitaro
    • Journal Title

      Physical Review D

      Volume: 97 Issue: 2 Pages: 023502-023502

    • DOI

      10.1103/physrevd.97.023502

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] State-of-the-Art Calculation of the Decay Rate of Electroweak Vacuum in the Standard Model2017

    • Author(s)
      S.Chigusa, T.Moroi and Y.Shoji
    • Journal Title

      Phys. Rev. Lett.

      Volume: 119 Issue: 21 Pages: 211801-211801

    • DOI

      10.1103/physrevlett.119.211801

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Can decaying particle explain cosmic infrared background excess?2017

    • Author(s)
      Kohri Kazunori、Moroi Takeo、Nakayama Kazunori
    • Journal Title

      Physics Letters B

      Volume: 772 Pages: 628-633

    • DOI

      10.1016/j.physletb.2017.07.026

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] False vacuum decay in gauge theory2017

    • Author(s)
      M. Endo, T. Moroi, M. M. Nojiri and Y. Shoji
    • Journal Title

      Journal of High Energy Physics

      Volume: 1711 Issue: 11 Pages: 074-074

    • DOI

      10.1007/jhep11(2017)074

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Flaxion: a minimal extension to solve puzzles in the standard model2017

    • Author(s)
      Y. Ema, K. Hamaguchi, T. Moroi and K. Nakayama
    • Journal Title

      Journal of High Energy Physics

      Volume: 1701 Issue: 1 Pages: 096-096

    • DOI

      10.1007/jhep01(2017)096

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Bottom-tau unification in a supersymmetric model with anomaly-mediation2016

    • Author(s)
      S. Chigusa and T. Moroi
    • Journal Title

      Physical Review

      Volume: D94 Issue: 3 Pages: 035016-035016

    • DOI

      10.1103/physrevd.94.035016

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Production and Decay of Di-photon Resonance at Future e+ e- Colliders2016

    • Author(s)
      H. Ito and T. Moroi
    • Journal Title

      Physical Review

      Volume: D94 Issue: 1 Pages: 015021-015021

    • DOI

      10.1103/physrevd.94.015021

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] Upper Bound on the Gluino Mass in Supersymmetric Models with Extra Matters2016

    • Author(s)
      T. Moroi, T.T. Yanagida and N. Yokozaki
    • Journal Title

      Physics Letters

      Volume: B760 Pages: 681-681

    • DOI

      10.1016/j.physletb.2016.07.061

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Early decay of Peccei-Quinn fermion and the IceCube neutrino events2016

    • Author(s)
      Y. Ema and T. Moroi
    • Journal Title

      Physics Letters B

      Volume: 762 Pages: 353-353

    • DOI

      10.1016/j.physletb.2016.09.048

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Renormalization-Scale Uncertainty in the Decay Rate of False Vacuum2016

    • Author(s)
      Motoi Endo, Takeo Moroi, Mihoko M. Nojiri, Yutaro Shoji
    • Journal Title

      JHEP

      Volume: 1601 Issue: 1 Pages: 031-031

    • DOI

      10.1007/jhep01(2016)031

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Studying 750 GeV di-photon resonance at photon–photon collider2016

    • Author(s)
      Hayato Ito, Takeo Moroi, Yoshitaro Takaesu
    • Journal Title

      Phys.Lett.

      Volume: B756 Pages: 147-152

    • DOI

      10.1016/j.physletb.2016.03.008

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] AMS-02 Antiprotons from Annihilating or Decaying Dark Matter2015

    • Author(s)
      Koichi Hamaguchi, Takeo Moroi, Kazunori Nakayama
    • Journal Title

      Phys.Lett.

      Volume: B747 Pages: 523-528

    • DOI

      10.1016/j.physletb.2015.06.041

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Beam dump experiment at future electron–positron colliders2015

    • Author(s)
      Shinya Kanemura, Takeo Moroi, Tomohiko Tanabe
    • Journal Title

      Phys.Lett.

      Volume: B751 Pages: 25-28

    • DOI

      10.1016/j.physletb.2015.10.002

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Revisiting Big-Bang Nucleosynthesis Constraints on Dark-Matter Annihilation2015

    • Author(s)
      M. Kawasaki, K. Kohri, T. Moroi and Y. Takaesu
    • Journal Title

      Physics Letters B

      Volume: 751 Pages: 246-250

    • DOI

      10.1016/j.physletb.2015.10.048

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Studying Inflation with Future Space-Based Gravitational Wave Detectors2014

    • Author(s)
      Ryusuke Jinno, Takeo Moroi, Tomo Takahashi
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2014 Issue: 12 Pages: 12-12

    • DOI

      10.1088/1475-7516/2014/12/006

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Axion Models with High Scale Inflation2014

    • Author(s)
      T. Moroi, K. Mukaida, K. Nakayama and M. Takimoto
    • Journal Title

      JHEP

      Volume: 1411 Issue: 11 Pages: 151-151

    • DOI

      10.1007/jhep11(2014)151

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Cosmological Implications of High-Energy Neutrino Emission from the Decay of Long-Lived Particle2014

    • Author(s)
      Y. Ema, R. Jinno and T. Moroi
    • Journal Title

      JHEP

      Volume: 1410 Issue: 10 Pages: 150-150

    • DOI

      10.1007/jhep10(2014)150

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] SUSY at the ILC2018

    • Author(s)
      Takeo Moroi
    • Organizer
      JSP meeting
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Stability of electroweak vacuum in the standard model2018

    • Author(s)
      Takeo Moroi
    • Organizer
      Sugawara Workshop
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Stability of electroweak vacuum in the standard model and beyond2018

    • Author(s)
      Takeo Moroi
    • Organizer
      PACIFIC2018
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Stability of electroweak vacuum in the standard model2017

    • Author(s)
      Takeo Moroi
    • Organizer
      NCTS Annual Theory Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] PeV Neutrinos from Heavy Relic Decays in Early Universe2017

    • Author(s)
      Takeo Moroi
    • Organizer
      PAHEN
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 標準模型を超える物理とエネルギーフロンティア実験2016

    • Author(s)
      諸井健夫
    • Organizer
      日本物理学会
    • Place of Presentation
      宮城県仙台市
    • Year and Date
      2016-03-19
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Renormalization-Scale Uncertainty in the Decay Rate of False Vacuum2015

    • Author(s)
      Takeo Moroi
    • Organizer
      IBS-PNU Joint Workshop on Particle Physics, String Theory and Cosmology
    • Place of Presentation
      Busan, Korea
    • Year and Date
      2015-12-02
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Beam-Dump Experiment at the ILC2015

    • Author(s)
      Takeo Moroi
    • Organizer
      Particle Cosmology and beyond 2015
    • Place of Presentation
      金沢
    • Year and Date
      2015-11-16
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Beam-Dump Experiment at the ILC2015

    • Author(s)
      Takeo Moroi
    • Organizer
      LCWS2015
    • Place of Presentation
      Whistler BC, Canada
    • Year and Date
      2015-11-02
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Looking for New Physics at the ILC2015

    • Author(s)
      Takeo Moroi
    • Organizer
      International Workshop on Particle Physics and Cosmology
    • Place of Presentation
      仙台
    • Year and Date
      2015-09-14
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Footprints of Supersymmetry on Higgs Decay2015

    • Author(s)
      Takeo Moroi
    • Organizer
      PPC2015
    • Place of Presentation
      Deadwood, SD, U.S.A.
    • Year and Date
      2015-06-29
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2014-04-04   Modified: 2019-03-29  

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