Generation and evolution of dark matter in the inflationary universe

• Project/Area Number: 17K05434
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: The University of Tokyo
• Principal Investigator: Kawasaki Masahiro 東京大学, 宇宙線研究所, 教授 (50202031)
• Project Period (FY): 2017-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
• Keywords: 原始ブラックホール / 暗黒物質 / アクシオン / ノントポロジカル・ソリトン / ノントポロジカルソリトン / インフレーション / 元素合成 / インフレーション模型 / 超重力理論 / 宇宙物理 / 素粒子論

Outline of Final Research Achievements

We built particle physics models such as double-inflation model, axion-like curvaton model and Affleck-Dine model, which successfully produce primordial black holes (PBHs) and showed that those PBHs can account for dark matter of the universe and/or black hole binary events observed by LIGO. We also found that axion field forms non-topological solitons called oscillons and studied their effects on dark matter and structure formation of the universe. We investigated injection of high energy photons and electrons produced by annihilation of dark matter particles and its effect on the cosmic microwave background, and obtained the constraint on the annihilation cross section of dark matter.

Academic Significance and Societal Importance of the Research Achievements

原始ブラックホールは宇宙初期に大きな密度揺らぎから生成されるブラックホールで、その存在が理論的に予言されて50年以上が経つ。近年、重力検出器LIGOで観測されたブラックホール合体イベントが原始ブラックホールではないかと感心が高まっている。本研究は原始ブラックホールを生成するような大きな密度揺らぎを作る具体的な素粒子模型を構築し、暗黒物質やLIGOで観測されたブラックホール合体イベントを説明できることを明らかにしたものでその学問的意義は非常に高い。

Research Products

• [Journal Article] NANOGrav Results and LIGO-Virgo Primordial Black Holes in Axionlike Curvaton Models (2021)
  • Author(s): Inomata Keisuke、Kawasaki Masahiro、Mukaida Kyohei、Yanagida Tsutomu T.
  • Journal Title: Physical Review Letters Volume: 126 Issue: 13 Pages: 131301-131301
  • DOI: 10.1103/physrevlett.126.131301
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Oscillons of axion-like particle: mass distribution and power spectrum (2021)
  • Author(s): Kawasaki Masahiro、Nakano Wakutaka、Nakatsuka Hiromasa、Sonomoto Eisuke
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2021 Issue: 01 Pages: 061-061
  • DOI: 10.1088/1475-7516/2021/01/061
  • Peer Reviewed
• [Journal Article] Big-bang nucleosynthesis with sub-GeV massive decaying particles (2020)
  • Author(s): Kawasaki Masahiro、Kohri Kazunori、Moroi Takeo、Murai Kai、Murayama Hitoshi
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2020 Issue: 12 Pages: 048-048
  • DOI: 10.1088/1475-7516/2020/12/048
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Big bang nucleosynthesis constraints on sterile neutrino and lepton asymmetry of the Universe (2020)
  • Author(s): Gelmini Graciela B.、Kawasaki Masahiro、Kusenko Alexander、Murai Kai、Takhistov Volodymyr
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2020 Issue: 09 Pages: 051-051
  • DOI: 10.1088/1475-7516/2020/09/051
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Gravitational wave production right after a primordial black hole evaporation (2020)
  • Author(s): Inomata Keisuke、Kawasaki Masahiro、Mukaida Kyohei、Terada Takahiro、Yanagida Tsutomu T.
  • Journal Title: Physical Review D Volume: 101 Issue: 12 Pages: 123533-123533
  • DOI: 10.1103/physrevd.101.123533
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Revisiting oscillon formation in the Kachru-Kallosh-Linde-Trivedi scenario (2020)
  • Author(s): Kasuya Shinta、Kawasaki Masahiro、Otani Francis、Sonomoto Eisuke
  • Journal Title: Physical Review D Volume: 102 Issue: 4
  • DOI: 10.1103/physrevd.102.043016
  • Peer Reviewed / Open Access
• [Journal Article] Generation of primordial black holes and gravitational waves from dilaton-gauge field dynamics (2020)
  • Author(s): Kawasaki Masahiro、Nakatsuka Hiromasa、Obata Ippei
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2020 Issue: 05 Pages: 007-007
  • DOI: 10.1088/1475-7516/2020/05/007
  • Peer Reviewed
• [Journal Article] Q-ball decay through A-term in the gauge-mediated SUSY breaking scenario (2020)
  • Author(s): Kawasaki Masahiro、Nakatsuka Hiromasa
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 04 Issue: 04 Pages: 017-017
  • DOI: 10.1088/1475-7516/2020/04/017
  • Peer Reviewed
• [Journal Article] Oscillon of ultra-light axion-like particle (2020)
  • Author(s): Kawasaki Masahiro、Nakano Wakutaka、Sonomoto Eisuke
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2020 Issue: 01 Pages: 047-047
  • DOI: 10.1088/1475-7516/2020/01/047
  • Peer Reviewed / Open Access
• [Journal Article] Fragileness of exact I-ball/oscillon (2019)
  • Author(s): Ibe Masahiro、Kawasaki Masahiro、Nakano Wakutaka、Sonomoto Eisuke
  • Journal Title: Physical Review D Volume: 100 Issue: 12 Pages: 125021-125021
  • DOI: 10.1103/physrevd.100.125021
  • Peer Reviewed / Open Access
• [Journal Article] Formation of supermassive primordial black holes by Affleck-Dine mechanism (2019)
  • Author(s): Kawasaki Masahiro、Murai Kai
  • Journal Title: Physical Review D Volume: 100 Issue: 10 Pages: 103521-103521
  • DOI: 10.1103/physrevd.100.103521
  • Peer Reviewed
• [Journal Article] Effect of nonlinearity between density and curvature perturbations on the primordial black hole formation (2019)
  • Author(s): Kawasaki Masahiro、Nakatsuka Hiromasa
  • Journal Title: Physical Review D Volume: 99 Issue: 12 Pages: 123501-123501
  • DOI: 10.1103/physrevd.99.123501
  • Peer Reviewed
• [Journal Article] Decay of I-ball/oscillon in classical field theory (2019)
  • Author(s): Ibe Masahiro、Kawasaki Masahiro、Nakano Wakutaka、Sonomoto Eisuke
  • Journal Title: Journal of High Energy Physics Volume: 2019 Issue: 4 Pages: 030-030
  • DOI: 10.1007/jhep04(2019)030
  • Peer Reviewed / Open Access
• [Journal Article] Primordial black holes from Affleck-Dine mechanism (2019)
  • Author(s): Hasegawa Fuminori、Kawasaki Masahiro
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2019 Issue: 01 Pages: 027-027
  • DOI: 10.1088/1475-7516/2019/01/027
  • Peer Reviewed / Open Access
• [Journal Article] Primordial black holes and the string swampland (2018)
  • Author(s): Kawasaki Masahiro、Takhistov Volodymyr
  • Journal Title: Physical Review D Volume: 98 Issue: 12 Pages: 1-1
  • DOI: 10.1103/physrevd.98.123514
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Long-term dynamics of cosmological axion strings (2018)
  • Author(s): Kawasaki Masahiro、Sekiguchi Toyokazu、Yamaguchi Masahide、Yokoyama Jun’ichi
  • Journal Title: Progress of Theoretical and Experimental Physics Volume: 2018 Issue: 9 Pages: 1-1
  • DOI: 10.1093/ptep/pty098
  • Peer Reviewed / Open Access
• [Journal Article] Big Bang nucleosynthesis constraint on baryonic isocurvature perturbations (2018)
  • Author(s): Inomata Keisuke、Kawasaki Masahiro、Kusenko Alexander、Yang Louis
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2018 Issue: 12 Pages: 003-003
  • DOI: 10.1088/1475-7516/2018/12/003
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Formation of primordial black holes in an axionlike curvaton model (2018)
  • Author(s): Ando Kenta、Kawasaki Masahiro、Nakatsuka Hiromasa
  • Journal Title: Physical Review D Volume: 98 Issue: 8 Pages: 1-1
  • DOI: 10.1103/physrevd.98.083508
  • Peer Reviewed / Open Access
• [Journal Article] Primordial black holes and uncertainties in the choice of the window function (2018)
  • Author(s): Ando Kenta、Inomata Keisuke、Kawasaki Masahiro
  • Journal Title: Physical Review D Volume: 97 Issue: 10 Pages: 103528-103537
  • DOI: 10.1103/physrevd.97.103528
  • Peer Reviewed
• [Journal Article] QCD axion dark matter from long-lived domain walls during matter domination (2018)
  • Author(s): Harigaya Keisuke、Kawasaki Masahiro
  • Journal Title: Physics Letters B Volume: 782 Pages: 1-5
  • DOI: 10.1016/j.physletb.2018.04.056
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Cosmologically allowed regions for the axion decay constant F a (2018)
  • Author(s): Kawasaki Masahiro、Sonomoto Eisuke、Yanagida Tsutomu T.
  • Journal Title: Physics Letters B Volume: 782 Pages: 181-184
  • DOI: 10.1016/j.physletb.2018.05.014
  • Peer Reviewed / Open Access
• [Journal Article] Revisiting big-bang nucleosynthesis constraints on long-lived decaying particles (2018)
  • 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
  • Peer Reviewed / Open Access
• [Journal Article] Double inflation as a single origin of primordial black holes for all dark matter and LIGO observations (2018)
  • Author(s): Inomata Keisuke、Kawasaki Masahiro、Mukaida Kyohei、Yanagida Tsutomu T.
  • Journal Title: Physical Review D Volume: 97 Issue: 4 Pages: 043514-043514
  • DOI: 10.1103/physrevd.97.043514
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Inflationary primordial black holes for the LIGO gravitational wave events and pulsar timing array experiments (2017)
  • Author(s): Inomata Keisuke、Kawasaki Masahiro、Mukaida Kyohei、Tada Yuichiro、Yanagida Tsutomu T.
  • Journal Title: Physical Review D Volume: 95 Issue: 12 Pages: 123510-123510
  • DOI: 10.1103/physrevd.95.123510
  • Peer Reviewed
• [Journal Article] Relaxation leptogenesis, isocurvature perturbations, and the cosmic infrared background (2017)
  • Author(s): Kawasaki Masahiro、Kusenko Alexander、Pearce Lauren、Yang Louis
  • Journal Title: Physical Review D Volume: 95 Issue: 10 Pages: 103006-103006
  • DOI: 10.1103/physrevd.95.103006
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Inflationary primordial black holes as all dark matter (2017)
  • Author(s): Inomata Keisuke、Kawasaki Masahiro、Mukaida Kyohei、Tada Yuichiro、Yanagida Tsutomu T.
  • Journal Title: Physical Review D Volume: 96 Issue: 4 Pages: 043504-043504
  • DOI: 10.1103/physrevd.96.043504
  • Peer Reviewed
• [Journal Article] New type of charged Q-ball dark matter in gauge mediated SUSY breaking models (2017)
  • Author(s): Hong Jeong-Pyong、Kawasaki Masahiro
  • Journal Title: Physical Review D Volume: 95 Issue: 12 Pages: 123532-123532
  • DOI: 10.1103/physrevd.95.123532
  • Peer Reviewed
• [Journal Article] Gauged Q-ball decay rates into fermions (2017)
  • Author(s): Hong Jeong-Pyong、Kawasaki Masahiro
  • Journal Title: Physical Review D Volume: 96 Issue: 10 Pages: 103526-103526
  • DOI: 10.1103/physrevd.96.103526
  • Peer Reviewed
• [Journal Article] Oscillating Affleck-Dine condensate and its cosmological implications (2017)
  • Author(s): Hasegawa Fuminori、Kawasaki Masahiro
  • Journal Title: Physical Review D Volume: 96 Issue: 6 Pages: 063518-063518
  • DOI: 10.1103/physrevd.96.063518
  • Peer Reviewed
• [Journal Article] O(10)M primordial black holes and string axion dark matter (2017)
  • Author(s): Inomata Keisuke、Kawasaki Masahiro、Mukaida Kyohei、Tada Yuichiro、Yanagida Tsutomu T.
  • Journal Title: Physical Review D Volume: 96 Issue: 12 Pages: 123527-123527
  • DOI: 10.1103/physrevd.96.123527
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Particle Physics Models for Primordial Black Hole Formation (2019)
  • Author(s): Masahiro Kawasaki
  • Organizer: Focus Week on Primordial Black Holes
  • Int'l Joint Research / Invited
• [Presentation] 原始ブラックホールと素粒子論 (2019)
  • Author(s): 川崎雅裕
  • Organizer: 物理学会 宇宙線・宇宙物理領域、素粒子論領域合同一般シンポジウム
  • Invited
• [Presentation] Primordial Black Hole Formation in Affleck-Dine Mechanism (2019)
  • Author(s): Masahiro Kawasaki
  • Organizer: Inflation and the dark sector ― Current challenges and future perspectives
  • Int'l Joint Research / Invited
• [Presentation] Axion Cosmology (2018)
  • Author(s): 川崎雅裕
  • Organizer: Revealing the history of the universe with underground particle and nuclear research 2019
  • Int'l Joint Research / Invited
• [Presentation] Primordial black hole formation in inflation models and production of gravitational waves (2018)
  • Author(s): 川崎雅裕
  • Organizer: 15th Marcel Grossmann Meeting
  • Int'l Joint Research
• [Presentation] Formation of primordial black holes in multi-field inflation models (2018)
  • Author(s): 川崎雅裕
  • Organizer: 14th Interational Conference of Computational Method in Science and Engineering
  • Int'l Joint Research / Invited
• [Presentation] Primordial black holes in multi-field inflation models (2017)
  • Author(s): 川崎雅裕
  • Organizer: PASCOS 2017
  • Int'l Joint Research
• [Presentation] Cosmological problems of QCD axion (2017)
  • Author(s): 川崎雅裕
  • Organizer: International workshop on "Axion physics and dark matter cosmology
  • Int'l Joint Research / Invited
• [Book] 宇宙物理学ハンドブック (2020)
  • Author(s): 高原文郎、家正則、小玉英雄、高橋忠幸 編
  • Total Pages: 912
  • Publisher: 朝倉書店
  • ISBN: 9784254131277
• [Remarks] 宇宙線研究所理論グループ
  • URL: http://www.icrr.u-tokyo.ac.jp/th/th-j.html