Study on evolution of scalar fields in the early universe and its observational consequences

• Project/Area Number: 22540267
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• 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): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 素粒子的宇宙論 / インフレーション / アクシオン / 位相欠陥 / 超対称性 / 原始ブラックホール / 等曲率揺らぎ / 宇宙論 / ドメイン・ウォール / インフレーション宇宙 / 立相欠陥

Research Abstract

We studied localized scalar field configurations such as topological defects (domain walls and strings) produced in the vacuum phase transitions and Q-balls predicted in supersymmetric theories. We investigated the cosmological evolution of those scalar fields by numerical simulations and estimated dark matter and baryon number densities which they produce. Thereby, we obtained constraints on particle physics models by using observational data.

Research Products

• [Journal Article] Extended analysis of CMB constraints on non-Gaussianity in isocurvature perturbations (2013)
  • Author(s): 日影千秋、川崎雅裕、関口豊和、高橋智
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 1303 Issue: 03 Pages: 20-20
  • DOI: 10.1088/1475-7516/2013/03/020
  • Peer Reviewed
• [Journal Article] Opnening the window to the cogeneis with Affleck-Dine nechanisn in gravity mediat (2013)
  • Author(s): Kamada, A. , Kawasaki. M, . Yamada, M
  • Journal Title: Physics Letters B Volume: 719 Issue: 1-3 Pages: 9-13
  • DOI: 10.1016/j.physletb.2013.01.017
  • Peer Reviewed
• [Journal Article] Smooth hybrid inflation in a supersymmetric axion model (2013)
  • Author(s): 川崎雅裕、北嶋直弥、中山和則
  • Journal Title: Physical Review D Volume: 87 Issue: 3 Pages: 35010-35010
  • DOI: 10.1103/physrevd.87.035010
  • Peer Reviewed
• [Journal Article] Non- Gaussianity from Attractor Curvaton (2013)
  • Author(s): 張ヶ谷圭介
  • Journal Title: Physical Review D Volume: 87 Issue: 6 Pages: 63514-63514
  • DOI: 10.1103/physrevd.87.063514
  • Peer Reviewed
• [Journal Article] High Scale SUSY Breaking From Topological Inflation (2013)
  • Author(s): 張ヶ谷圭介
  • Journal Title: Physics Letters B Volume: 719 Issue: 1-3 Pages: 126-130
  • DOI: 10.1016/j.physletb.2013.01.002
  • Peer Reviewed
• [Journal Article] Non-Gaussianity from Axionic Curvaton (2013)
  • Author(s): M. Kawasaki, T. Kobayashi and F. Takahashi
  • Journal Title: JCAP Volume: 1303 Issue: 03 Pages: 16-16
  • DOI: 10.1088/1475-7516/2013/03/016
  • Peer Reviewed
• [Journal Article] Q ball Decay Rates into Gravitinos and Quarks (2013)
  • Author(s): M. Kawasaki and M. Yamada
  • Journal Title: Phys. Rev. D Volume: 87 Issue: 2 Pages: 23517-23517
  • DOI: 10.1103/physrevd.87.023517
  • Peer Reviewed
• [Journal Article] Axion cosmology with long-lived domain walls (2013)
  • Author(s): 平松尚志、川崎雅裕、齋川賢一、関口豊和
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 1 Issue: 01 Pages: 1-41
  • DOI: 10.1088/1475-7516/2013/01/001
  • NAID: 120005242921
  • Peer Reviewed
• [Journal Article] Primordial black hole formation from an axionlike curvaton model (2013)
  • Author(s): 川崎雅裕、北嶋直弥、柳田勉
  • Journal Title: Physical Review D Volume: 87 Issue: 6 Pages: 63519-63519
  • DOI: 10.1103/physrevd.87.063519
  • Peer Reviewed
• [Journal Article] Hubble-induced mass from MSSM plasma (2013)
  • Author(s): M. Kawasaki, F. Takahashi and T. Takesako
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 1304 Pages: 8-8
  • Peer Reviewed
• [Journal Article] Stochastic approach to flat direction during inflation (2012)
  • Author(s): Tomohiro Takesako
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 8 Issue: 08 Pages: 31-31
  • DOI: 10.1088/1475-7516/2012/08/031
  • Peer Reviewed
• [Journal Article] Production of dark matter axions from collapse of string-wall systems (2012)
  • Author(s): 平松尚志、川崎雅裕、齋川賢一、関口豊和
  • Journal Title: Physical Review D Volume: 85 Issue: 10 Pages: 1050201-17
  • DOI: 10.1103/physrevd.85.105020
  • Peer Reviewed
• [Journal Article] Primordial seeds of supermassive black holes (2012)
  • Author(s): M. Kawasaki, A. Kusenko and T. T. Yanagida
  • Journal Title: Physics Letters B Volume: 711 Issue: 1 Pages: 1-5
  • DOI: 10.1016/j.physletb.2012.03.056
  • Peer Reviewed
• [Journal Article] Updated constraint on a primordial magnetic field during big bang nucleosynthesis and a formulation of field effects (2012)
  • Author(s): M. Kawasaki and M. Kusakabe
  • Journal Title: Physical Review D Volume: 86 Issue: 6 Pages: 63003-63003
  • DOI: 10.1103/physrevd.86.063003
  • Peer Reviewed
• [Journal Article] Remarks on Hubble induced mass from fermion kinetic term (2012)
  • Author(s): Tomohiro Takesako
  • Journal Title: Physics Letters B Volume: 718 Issue: 2 Pages: 522-525
  • DOI: 10.1016/j.physletb.2012.10.080
  • Peer Reviewed
• [Journal Article] Isocurvature perturbations in extra radiation (2012)
  • Author(s): 川崎雅裕、宮本幸一、中山和則、関口豊和
  • Journal Title: Journal of Cosmology and Astr op article Physics Volume: 1202 Issue: 02 Pages: 22-22
  • DOI: 10.1088/1475-7516/2012/02/022
  • Peer Reviewed
• [Journal Article] Hubble Induced Mass in Radiation Dominated Universe (2012)
  • Author(s): M. Kawasaki and T. Takesako
  • Journal Title: Physics Letters B Volume: 711 Issue: 2 Pages: 173-177
  • DOI: 10.1016/j.physletb.2012.03.069
  • Peer Reviewed
• [Journal Article] Gravitino dark matter and baryon asymmetry from Q-ball decay in gauge mediation (2011)
  • Author(s): S. Kasuya and M. Kawasaki
  • Journal Title: Physical Review D Volume: 84 Issue: 12 Pages: 123528-123528
  • DOI: 10.1103/physrevd.84.123528
  • Peer Reviewed
• [Journal Article] Differentiating CDM and baryon isocurvature models with 21 cm fluctuations (2011)
  • Author(s): 川崎雅裕、関口豊和、高橋智
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 1110 Issue: 10 Pages: 28-28
  • DOI: 10.1088/1475-7516/2011/10/028
  • Peer Reviewed
• [Journal Article] Cosmological Aspects of Inflation in a Supersymmetric Axion Model (2011)
  • Author(s): M.Kawasaki, N.Kitajima, K.Nakayama
  • Journal Title: Physical Review D Volume: 83 Issue: 12 Pages: 123521-123521
  • DOI: 10.1103/physrevd.83.123521
  • Peer Reviewed
• [Journal Article] Study of Gravitational Radiation from Cosmic Domain Walls (2011)
  • Author(s): 川崎雅裕、齋川賢一
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 09 Issue: 09 Pages: 8-8
  • DOI: 10.1088/1475-7516/2011/09/008
  • Peer Reviewed
• [Journal Article] Evolution of String-Wall Networks and Axionic Domain Wall Problem (2011)
  • Author(s): 平松尚志、川崎雅裕、齋川賢一
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 08 Issue: 08 Pages: 30-30
  • DOI: 10.1088/1475-7516/2011/08/030
  • Peer Reviewed
• [Journal Article] Improved estimation of radiated axions from cosmological axionic strings (2011)
  • Author(s): Takashi Hiramatsu, Masahiro Kawasaki, Toyokazu Sekiguchi, Masahide Yamaguchi, Jun'ichi Yokoyama
  • Journal Title: Phys.Rev Volume: D83 Issue: 12 Pages: 123531-123531
  • DOI: 10.1103/physrevd.83.123531
  • Peer Reviewed
• [Journal Article] Cosmological constraints on dark matter models with velocity-dependent annihilation cross section (2011)
  • Author(s): 久野純二、川崎雅裕、郡和範、諸井健夫、中山和則、関口豊和
  • Journal Title: Physical Review D Volume: 83 Issue: 12 Pages: 123511-123511
  • DOI: 10.1103/physrevd.83.123511
  • Peer Reviewed
• [Journal Article] Kahler moduli double inflation (2011)
  • Author(s): M.Kawasaki, K.Miyamoto
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 1102 Pages: 4-4
• [Journal Article] Destruction of 7Be in big bang nucleosynthesis via long-lived sub-strongly interacting massive particles as a solution to the Li problem (2011)
  • Author(s): M.Kawasaki, M.Kusakabe
  • Journal Title: Physical Review D Volume: 83 Pages: 55011-55011
• [Journal Article] Inflation from a Supersymmetric Axion Model (2010)
  • Author(s): M. Kawasaki, N. Kitajima, K.Nakayama
  • Journal Title: Phys. Rev. D Volume: 82 Issue: 12 Pages: 123531-123531
  • DOI: 10.1103/physrevd.82.123531
  • Peer Reviewed
• [Journal Article] Numerical study of Q-ball formation in gravity mediation (2010)
  • Author(s): T. Hiramatsu, M. Kawasaki, F.Takahashi
  • Journal Title: JCAP Volume: 1006 Issue: 06 Pages: 8-8
  • DOI: 10.1088/1475-7516/2010/06/008
  • NAID: 110008761472
  • Peer Reviewed
• [Journal Article] Gravitational Waves fromCollapsing Domain Walls (2010)
  • Author(s): T. Hiramatsu, M. Kawasaki, K.Saikawa
  • Journal Title: JCAP Volume: 1005 Issue: 05 Pages: 32-32
  • DOI: 10.1088/1475-7516/2010/05/032
  • Peer Reviewed
• [Journal Article] Gravitational waves from kinks on infinite cosmic strings (2010)
  • Author(s): M. Kawasaki, K. Miyamoto, K.Nakayama
  • Journal Title: Phys. Rev. D Volume: 81 Issue: 10 Pages: 103523-103523
  • DOI: 10.1103/physrevd.81.103523
  • Peer Reviewed
• [Journal Article] Right-handed sneutrino dark matter and big-bang nucleosynthesis (2010)
  • Author(s): K. Ishiwata, M. Kawasaki, K. Kohri, T.Moroi
  • Journal Title: Phys. Lett. B Volume: 689 Issue: 4-5 Pages: 163-168
  • DOI: 10.1016/j.physletb.2010.04.054
  • Peer Reviewed
• [Journal Article] Probing the primordial power spectra with inflationary priors (2010)
  • Author(s): M. Kawasaki, T. Sekiguchi
  • Journal Title: JCAP Volume: 1002 Issue: 02 Pages: 13-13
  • DOI: 10.1088/1475-7516/2010/02/013
  • Peer Reviewed
• [Journal Article] Effects of Dark Matter Annihilation on the Cosmic Microwave Background (2010)
  • Author(s): T. Kanzaki, M. Kawasaki, K.Nakayama
  • Journal Title: Prog. Theor. Phys. Volume: 123 Issue: 5 Pages: 853-865
  • DOI: 10.1143/ptp.123.853
  • NAID: 110007618877
  • Peer Reviewed
• [Journal Article] Probing the primordial power spectra with inflationary priors (2010)
  • Author(s): M.Kawasaki, T.Sekiguchi
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 1002 Pages: 13-13
• [Journal Article] Gravitational waves from kinks on infinite cosmic strings (2010)
  • Author(s): M.Kawasaki, K.Miyamoto, K.Nakayama
  • Journal Title: Physical Review D Volume: 81 Pages: 103523-103523
• [Journal Article] Numerical study of Q-ball formation in gravity mediation (2010)
  • Author(s): T.Hiramatsu, M.Kawasaki, F.Takahashi
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 1006 Pages: 8-8
  • NAID: 110008761472
• [Journal Article] Right-handed sneutrino dark matter and big-bang nucleosynthesis (2010)
  • Author(s): K.Ishiwata, M.Kawasaki, K.Kohri, T.Moroi
  • Journal Title: Physics Letters B Volume: 689 Pages: 163-168
• [Journal Article] Primordial Black Holes as All Dark Matter (2010)
  • Author(s): P.H.Frampton, M.Kawasaki, F.Takahashi T.T.Yanagida
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 1004 Pages: 23-23
• [Journal Article] Gravitational Waves from Collapsing Domain Walls (2010)
  • Author(s): T.Hiramatsu, M.Kawasaki, K.Saikawa
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 1005 Pages: 32-32
• [Journal Article] B-mode polarization induced by gravitational waves from kinks on infinite cosmic strings (2010)
  • Author(s): M.Kawasaki, K.Miyamoto, K Nakayama
  • Journal Title: Physical Review D Volume: 82 Pages: 103504-103504
• [Journal Article] Inflation from a Supersymmetric Axion Model (2010)
  • Author(s): M.Kawasaki, N.Kitajima, K.Nakayama
  • Journal Title: Physical Review D Volume: 82 Pages: 123531-123531
• [Presentation] Axion Cosmology (2012)
  • Author(s): M.Kawasaki
  • Organizer: The 4th GCOE International Symposium : Weaving Science Web beyond Particle-Matter Hierarchy
  • Place of Presentation: 東北大学(仙台)(招待講演)
  • Year and Date: 2012-02-22
• [Presentation] Axion Cosmology -- Axions from topological defects (2012)
  • Author(s): M. Kawasaki
  • Organizer: Accelerators In the Universe 2012 Axion Cosmophysics
  • Place of Presentation: Japan, KEK, Tsukuba
• [Presentation] Axion Cosmology (2012)
  • Author(s): M. Kawasaki
  • Organizer: The4th GCOE International Symposium: Weaving Science Web beyond Particle-Matter HierarchyTohoku University
  • Place of Presentation: Japan
• [Presentation] Inflation from a SUSY Axion Model (2011)
  • Author(s): M.Kawasaki
  • Organizer: International Conference on Particle Physics and Cosmology (COSMO 11)
  • Place of Presentation: ポルト(ポルトガル)
  • Year and Date: 2011-08-22
• [Presentation] Particle Cosmology, Nagoya University GCOE Winter School/Workshop 2011 (2011)
  • Author(s): M. Kawasaki
  • Organizer: Particle Cosmology
  • Place of Presentation: Sakata-Hirata Hall, Nagoya University
• [Presentation] Inflation from a SUSY Axion Model (2011)
  • Author(s): M. Kawasaki
  • Organizer: International Conference on Particle Physics and Cosmology (COSMO 11)
  • Place of Presentation: Porto, Portugal
• [Presentation] Isocurvature Perturbation as Probe for the Early Universe (2010)
  • Author(s): M.Kawasaki
  • Organizer: 国際会議Extra-Dimension Probe by Cosmophysics
  • Place of Presentation: 高エネルギー研究機構
  • Year and Date: 2010-11-09
• [Presentation] Isocurvature Perturbation as Probe for the Early Universe (2010)
  • Author(s): M. Kawasaki
  • Organizer: Extra-Dimension Probe by Cosmophysics
  • Place of Presentation: KEK, Japan
• [Presentation] Axion Cosmology -- Axions from topological defects
  • Author(s): M. Kawasaki
  • Organizer: Accelerators In the Universe 2012 Axion Cosmophysic
  • Place of Presentation: KEK, Tsukuba
  • Invited
• [Remarks]
  • URL: http://www.icrr.u-tokyo.ac.jp/th/kawasaki/Welcome.html
• [Remarks] 東京大学宇宙線研究所ホームページ
  • URL: http://www.icrr.u-tokyo.ac.jp/th/kawasaki/Welcome.html