論文

査読有り
2016年5月

Gravitational baryogenesis after anisotropic inflation

PHYSICAL REVIEW D
  • Mitsuhiro Fukushima
  • ,
  • Shuntaro Mizuno
  • ,
  • Kei-ichi Maeda

93
10
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevD.93.103513
出版者・発行元
AMER PHYSICAL SOC

The gravitational baryogensis may not generate a sufficient baryon asymmetry in the standard thermal history of the Universe when we take into account the gravitino problem. Hence, it has been suggested that anisotropy of the Universe can enhance the generation of the baryon asymmetry through the increase of the time change of the Ricci scalar curvature. We study the gravitational baryogenesis in the presence of anisotropy, which is produced at the end of an anisotropic inflation. Although we confirm that the generated baryon asymmetry is enhanced compared with the original isotropic cosmological model, taking into account the constraint on the anisotropy by the recent CMB observations, we find that it is still difficult to obtain the observed baryon asymmetry only through the gravitational baryogenesis without suffering from the gravitino problem.

リンク情報
DOI
https://doi.org/10.1103/PhysRevD.93.103513
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000376256900001&DestApp=WOS_CPL
ID情報
  • DOI : 10.1103/PhysRevD.93.103513
  • ISSN : 2470-0010
  • eISSN : 2470-0029
  • Web of Science ID : WOS:000376256900001

エクスポート
BibTeX RIS