Research for the early universe using observational data

• Project/Area Number: 18540254
• 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 The University of Tokyo, 宇宙線研究所, 教授 (50202031)
• Project Period (FY): 2006 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥4,090,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥690,000); Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2008: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2007: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2006: ¥1,100,000 (Direct Cost: ¥1,100,000)
• Keywords: 素粒子的宇宙論 / インフレーション / 超対称性 / 暗黒物質 / アクシオン / 宇宙背景放射 / グラビティーノ / 超対称性理論 / バリオン数生成 / 元素合成

Research Abstract

We considered various particles and fields which are predicted in new models of particle physics such as supersymmetric theory and investigate their effects on thermal history of the universe and properties of density fluctuations produced during inflation. By using observational data we obtained constraints on particle physics and inflation models.

Research Products

• [Journal Article] Numerical study of Q-ball formation in gravity mediation (2010)
  • Author(s): T. Hiramatsu, M. Kawasaki, F. Takahashi
  • Journal Title: JCAP 1006 008
  • NAID: 110008761472
  • Peer Reviewed
• [Journal Article] Probing the primordial power spectra with inflationary priors (2010)
  • Author(s): M. Kawasaki, T. Sekiguchi
  • Journal Title: JCAP 1002 013
  • 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 1002 Pages: 13-13
  • 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: Progress of Theoretical Physics (印刷中)
  • NAID: 110007618877
  • Peer Reviewed
• [Journal Article] Constraining Light Gravitino Mass from Cosmic Microwave Background (2009)
  • Author(s): K. Ichikawa, M. Kawasaki, K. Nakayama, T. Sekiguchi, T. Takahashi
  • Journal Title: JCAP 0908 013
  • Peer Reviewed
• [Journal Article] Axion isocurvature fluctuations with extremely blue spectrum (2009)
  • Author(s): S. Kasuya, M. Kawasaki
  • Journal Title: Phys.Rev. D80 Pages: 23516-23516
  • Peer Reviewed
• [Journal Article] Diffuse gamma-ray background and cosmic-ray positrons from annihilating dark matter (2009)
  • Author(s): M. Kawasaki, K. Kohri, K. Nakayama
  • Journal Title: Phys.Rev. D80 Pages: 23517-23517
  • Peer Reviewed
• [Journal Article] Cosmic Rays from Dark Matter Annihilation and Big-Bang Nucleosynthesis (2009)
  • Author(s): J. Hisano, M. Kawasaki, K. Kohri, T. Moroi, K. Nakayama
  • Journal Title: Phys.Rev. D79 Pages: 83522-83522
  • Peer Reviewed
• [Journal Article] Positron/Gamma-Ray Signatures of Dark Matter Annihilation and Big-Bang Nucleosynthesis (2009)
  • Author(s): J. Hisano, M. Kawasaki, K. Kohri, K. Nakayama
  • Journal Title: Phys.Rev. D79 Pages: 63514-63514
  • Peer Reviewed
• [Journal Article] Non-Gaussianity from Baryon Asymmetry (2009)
  • Author(s): M. Kawasaki, K. Nakayama, F. Takahashi
  • Journal Title: JCAP 0901 002
  • Peer Reviewed
• [Journal Article] Neutrino Signals from Annihilating/Decaying Dark Matter in the Light of Re- cent Measurements of Cosmic Ray Electron/Positron Fluxes (2009)
  • Author(s): J.Hisano, M.Kawasaki, K.Kohri, K.Nakayama
  • Journal Title: Physical Review D 79 Pages: 43516-43516
  • Peer Reviewed
• [Journal Article] Cosmic Rays from Dark Matter Annihilation and BigBang Nucleosynthesis (2009)
  • Author(s): J.Hisano, M.Kawasaki, K.Kohri, T.Moroi, K.Nakayama
  • Journal Title: Physical Review D 79 Pages: 901-901
  • Peer Reviewed
• [Journal Article] Axion braneworld cosmology (2009)
  • Author(s): C.Bambi, M.Kawasaki, F.R.Urban
  • Journal Title: Physical Review D 80 Pages: 23533-23533
  • Peer Reviewed
• [Journal Article] Diffuse gamma-ray background and cosmic-ray positrons from annihilating dark matter (2009)
  • Author(s): M.Kawasaki, K.Kohri, K.Nakayama
  • Journal Title: Physical Review D 80 Pages: 23517-23517
  • Peer Reviewed
• [Journal Article] Axion isocurvature fluctuations with extremely blue spectrum (2009)
  • Author(s): S.Kasuya, M.Kawasaki
  • Journal Title: Physical Review D 80 Pages: 23516-23516
  • Peer Reviewed
• [Journal Article] Non-Gaussianity from Isocurvature Perturbations : Analysis of Trispectrum (2009)
  • Author(s): E.Kawakami, M.Kawasaki, K.Nakayama, F.Takahashi
  • Journal Title: Journal of Cosmology and Astroparticle Physics 0909 Pages: 2-2
  • Peer Reviewed
• [Journal Article] Constraining Light Gravitino Mass from Cosmic Microwave Background (2009)
  • Author(s): K.Ichikawa, M.Kawasaki, K.Nakayama, T.Sekiguchi, T.Takahashi
  • Journal Title: Journal of Cosmology and Astroparticle Physics 0908 Pages: 13-13
  • Peer Reviewed
• [Journal Article] On some hybrid-types of Q balls in the gauge-mediated supersymmetry breaking (2009)
  • Author(s): S.Kasuya, M.Kawasaki
  • Journal Title: Physical Review D 80 Pages: 123529-123529
  • Peer Reviewed
• [Journal Article] Density Fluctuations in Thermal Inflation and Non-Gaussianity (2009)
  • Author(s): M.Kawasaki, T.Takahashi, S.Yokoyama
  • Journal Title: Journal of Cosmology and Astroparticle Physics 0902 Pages: 12-12
  • Peer Reviewed
• [Journal Article] Non-Gaussianity from Baryon Asymmetry (2009)
  • Author(s): M. Kawasaki, K. Nakayama, F. Takahashi
  • Journal Title: Journal of Cosmology and Astroparticle Physics 0901 Pages: 2-2
  • Peer Reviewed
• [Journal Article] A General Analysis of Non-Gaussianity from Isocurvature Perturbations (2009)
  • Author(s): M. Kawasaki, K. Nakayama, T. Sekiguchi, T. Suyama F. Takahashi
  • Journal Title: Journal of Cosmology and Astroparticle Physics 0901 Pages: 42-42
  • Peer Reviewed
• [Journal Article] Hilltop Non-Gaussianity (2009)
  • Author(s): M. Kawasaki, K. Nakayama, F. Takahashi
  • Journal Title: Journal of Cosmology and Astroparticle Physics 0901 Pages: 62-62
  • Peer Reviewed
• [Journal Article] Positron/Gamma-Ray Signatures of Dark Matter Annihilation and Big-Bang Nucleosynthesis (2009)
  • Author(s): J. Hi sano, M. Kawasaki, K. Kohri, K. Nakayama
  • Journal Title: Physical Review D 79 Pages: 63514-63514
  • Peer Reviewed
• [Journal Article] Non-Gaussianity from isocurvature perturbations (2008)
  • Author(s): M. Kawasaki, K. Nakayama, T. Sekiguchi, T. Suyama, F. Takahashi
  • Journal Title: JCAP 0811 019
  • Peer Reviewed
• [Journal Article] Isocurvature fluctuations in Affleck-Dine mechanism and constraints on inflation models (2008)
  • Author(s): S. Kasuya, M. Kawasaki, F. Takahashi
  • Journal Title: JCAP 0810 017
  • Peer Reviewed
• [Journal Article] Big-Bang Nucleosynthesis and Gravitino (2008)
  • Author(s): M. Kawasaki, K. Kohri, T. Moroi, A. Yotsuyanagi
  • Journal Title: Phys.Rev. D78 Pages: 65011-65011
  • Peer Reviewed
• [Journal Article] Cosmological implications of supersymmetric axion models (2008)
  • Author(s): M. Kawasaki, K. Nakayama, M. Senami
  • Journal Title: JCAP 0803 009
  • Peer Reviewed
• [Journal Article] Cosmological Constraints on Isocurvature and Tensor Perturbations (2008)
  • Author(s): M. Kawasaki, T. Sekiguchi
  • Journal Title: Prog.Theor.Phys. 120 Pages: 995-1016
  • NAID: 110007004909
  • Peer Reviewed
• [Journal Article] Non-Gaussianity from isocurvature perturbations (2008)
  • Author(s): M. Kawasaki, K. Nakayama, T. Sekiguchi, T. Suyama、 F. Takahashi
  • Journal Title: JCAP 0811 19 Pages: 21-21
  • Peer Reviewed
• [Journal Article] Big-Bang Nucleosynthesis and Gravitino (2008)
  • Author(s): M. Kawasaki, K. Kohri, T. Moroi, A.Yotsuyanagi
  • Journal Title: Physical Review 78(065011) Pages: 14-14
  • Peer Reviewed
• [Journal Article] Isocurvature fluctuations in Affleck-Dine mechanism and constraints on inflation models (2008)
  • Author(s): S. Kasuya, M. Kawasaki, F. Takahashi
  • Journal Title: JCAP 0810 17 Pages: 14-14
  • Peer Reviewed
• [Journal Article] Cosmological implications of supersymmetric axion models (2008)
  • Author(s): M. Kawasaki, K. Nakayama, M. Senami
  • Journal Title: JCAP 0803 9 Pages: 24-24
  • Peer Reviewed
• [Journal Article] Solving Cosmological Problems of Supersymmetric Axion Models in Inflationary Universe (2008)
  • Author(s): M. Kawasaki, K. Nakayama
  • Journal Title: Physical Review D 77 Pages: 123524-123524
  • Peer Reviewed
• [Journal Article] Big-Bang Nucleosynthesis and Gravitino (2008)
  • Author(s): M. Kawasaki, K. Kohri, T. Moroi, A. Yotsuyanagi
  • Journal Title: Physical Review D 78 Pages: 65011-65011
  • Peer Reviewed
• [Journal Article] Isocurvature fluctuations in Affleck-Dine mechanism and constraints on inflation models (2008)
  • Author(s): S. Kasuya, M. Kawasaki F. Takahashi
  • Journal Title: Journal of Cosmology and Astroparticle Physics 0810 Pages: 17-17
  • Peer Reviewed
• [Journal Article] Inhomogeneous baryogenesis, cosmic antimatter, and dark matter (2008)
  • Author(s): A.D. Dolgov, M. Kawasaki N. Kevlishvili
  • Journal Title: Nuclear Physics B 807 Pages: 229-250
  • Peer Reviewed
• [Journal Article] Non-Gaussianity from isocurvature perturbations (2008)
  • Author(s): M. Kawasaki, K. Nakayama, T. Sekiguchi, T. Suyama F. Takahashi
  • Journal Title: Journal of Cosmology and Astroparticle Physics 0811 Pages: 19-19
  • Peer Reviewed
• [Journal Article] Cosmological implications of supersymmetric axion models (2008)
  • Author(s): M. Kawasaki, K. Nakayama, M. Senar
  • Journal Title: Journal of Cosmology and Astroparticle Phtsics 803
  • Peer Reviewed
• [Journal Article] Baryon asymmetry in heavy moduli scenario (2007)
  • Author(s): M. Kawasaki, K. Nakayama
  • Journal Title: Phys.Rev. D76 Pages: 43502-43502
  • Peer Reviewed
• [Journal Article] Big-bang nucleosynthesis with long-lived charged slepton (2007)
  • Author(s): M. Kawasaki, K. Kohri, T. Moroi
  • Journal Title: Phys.Lett. B649 Pages: 436-439
  • Peer Reviewed
• [Journal Article] Cosmological constraints on gravitino LSP scenario with sneutrino NLSP (2007)
  • Author(s): T. Kanzaki, M. Kawasaki, K. Kohri, T. Moroi
  • Journal Title: Phys.Rev. D75 Pages: 25011-25011
  • Peer Reviewed
• [Journal Article] Big-bang nucleosynthesis with long-lived charged slepton (2007)
  • Author(s): M. Kawasaki, K. Kohri, T. Moroi
  • Journal Title: Phys. Lett 694 Pages: 436-439
  • Peer Reviewed
• [Journal Article] Constraint on the Effective Number of Neutrino Species from the WMAP and SDSS LRG Power Spectra (2007)
  • Author(s): K. Ichikawa, M. Kawasaki, F. Takaha
  • Journal Title: Journal of Cosmology and Astroparticle Physics 705
  • Peer Reviewed
• [Journal Article] Increasing effective number of neutrinos by decaying particles (2007)
  • Author(s): K. Ichikawa, M. Kawasaki, K. Nakayama, M Senami and E Takahashi
  • Journal Title: Journal of Cosmology and Astroparticle Physics 705
  • Peer Reviewed
• [Journal Article] Increasing effective number of neutrinos by decaying particles (2007)
  • Author(s): M. Kawasaki, K. Kohri and T. Moroi
  • Journal Title: Physical Letters B 649 Pages: 436-439
  • Peer Reviewed
• [Journal Article] Cosmological Constraints on Neutrino Injection (2007)
  • Author(s): T. Kanzaki, M. Kawasaki, K. Kohri, T. Moroi
  • Journal Title: Physical Review D 76
  • Peer Reviewed
• [Journal Article] Baryon asymmetry in heavy moduli scenario (2007)
  • Author(s): M. Kawasaki and K. Nakayama
  • Journal Title: Physical Review D 76
  • Peer Reviewed
• [Journal Article] Solving the cosmic lithium problems with primordial late-decaying. particles (2007)
  • Author(s): D. Cumberbatch, K. Ichikawa, M. Kawasaki, K. Kohri, J. Silk and G. D. Starkman
  • Journal Title: Physical Review D 76
  • Peer Reviewed
• [Journal Article] Affleck-Dine baryogenesis in anomaly-mediated SUSY breaking (2007)
  • Author(s): M.Kawasaki
  • Journal Title: Journal of Cosmology and Astroparticle Physics 0702
• [Journal Article] Inflaton Decay through Supergravity Effects (2006)
  • Author(s): M. Endo, M. Kawasaki, F. Takahashi, T. T. Yanagida
  • Journal Title: Phys.Lett. B642 Pages: 518-524
  • Peer Reviewed
• [Journal Article] The gravitino overproduction problem in inflationary universe (2006)
  • Author(s): M. Kawasaki, F. Takahashi, T. T. Yanagida
  • Journal Title: Phys.Rev. D74 Pages: 43519-43519
  • Peer Reviewed
• [Journal Article] Gravitino overproduction in inflaton decay (2006)
  • Author(s): M. Kawasaki, F. Takahashi, T. T. Yanagida
  • Journal Title: Phys.Lett. B638 Pages: 8-12
  • Peer Reviewed
• [Journal Article] Primordial Helium Abundance : A Reanalysis of the Izotov-Thuan Spectroscopic Sample (2006)
  • Author(s): M. Fukugita, M. Kawasaki
  • Journal Title: Astrophysical Journal 646 Pages: 691-695
  • Peer Reviewed
• [Journal Article] The gravitino overproduction problem in inflationary universe (2006)
  • Author(s): M. Kawasaki, F.Takahashi, T.T.Yanagida
  • Journal Title: Physical Review 74(043519) Pages: 14-14
  • Peer Reviewed
• [Journal Article] 511 keV line and diffuse gamma rays from moduli (2006)
  • Author(s): S.Kasuya
  • Journal Title: Physical Review D73
• [Journal Article] Primordial Helium Abundance : A Reanalysis of the Izotov-Thuan Spectroscopic Sample (2006)
  • Author(s): M.Fukugita
  • Journal Title: Astrophysical Journal 646 Pages: 691-695
• [Journal Article] Gravitino overproduction in inflaton decay (2006)
  • Author(s): M.Kawasaki
  • Journal Title: Physics Letters B638 Pages: 8-12
• [Journal Article] Power spectrum of the density perturbations from smooth hybrid new inflation model (2006)
  • Author(s): M.Kawasaki
  • Journal Title: Physical Review D74
• [Journal Article] The gravitino overproduction problem in inflationary universe (2006)
  • Author(s): M.Kawasaki
  • Journal Title: Physical Review D74
• [Journal Article] Late-time Affleck-Dne baryogenesis after thermal inflation (2006)
  • Author(s): M.Kawasaki
  • Journal Title: Physical Review D74
• [Journal Article] Cosmological constraints on gravitino LSP scenario with sneutrino NLSP (2006)
  • Author(s): T.Kanzaki
  • Journal Title: Physical Review D75
• [Presentation] Cosmological constraints on gravitino and axion (2008)
  • Author(s): M. Kawasaki
  • Organizer: Hot topics in modern cosmology
  • Place of Presentation: フランス
  • Year and Date: 2008-05-16
• [Presentation] Cosmological Constraints on Gravitino and Axion in the Inflationary Universe (2008)
  • Organizer: Hot topics in Modern Cosmology Spontaneous Workshop 2
  • Place of Presentation: Carese, France
  • Year and Date: 2008-05-15
• [Presentation] Cosmological Constraints on Gravitino and Axion in the Inflationary Universe (2008)
  • Author(s): M. Kawasaki
  • Organizer: Hot topics in Modern Cosmology Spontaneous Workshop 2 Carese
  • Place of Presentation: France
• [Presentation] Supersymmetry and cosmology : Inflation, gravitino and axion (2007)
  • Author(s): M. Kawasaki
  • Organizer: International Workshop on Grand Unified Theories (GUT07)
  • Place of Presentation: 滋賀
  • Year and Date: 2007-12-19
• [Presentation] Supersymmetry and Cosmology: Inflation, gravitino and axion (2007)
  • Author(s): M. Kawasaki
  • Organizer: International Workshop on Grand Unified Theories(GUTO7)
  • Place of Presentation: 滋賀・立命館大学
  • Year and Date: 2007-12-19
• [Presentation] Moduli Problem, Thermal Inflation and Baryogenesis (2007)
  • Author(s): M. Kawasaki
  • Organizer: Finnish-Japanese Workshop on Particle Cosmology
  • Place of Presentation: Helsinki, Finland
  • Year and Date: 2007-03-09
• [Book] シリーズ現代の天文学「宇宙論I」
  • Author(s): 佐藤, 二間瀬, 川崎, 佐々木, 白水, 横山
  • Total Pages: 246
  • Publisher: 日本評論社