Gravitational baryogenesis after anisotropic inflation

Mitsuhiro Fukushima, Shuntaro Mizuno, Kei Ichi Maeda

研究成果: Conference contribution

抄録

Gravitational baryogenesis cannot generate sufficient baryon asymmetry within the low reheating temperature which is constrained from gravitino problem. But⋯ • Anisotropic background metric can enhance generated baryon asymmetry. (through increasing Ṙ and TD) Anisotropic inflation • Anisotropy of the Universe exponentially grows at the end of inflation. • Generated baryon asymmetry YBincreases with large c (large anisotropy). But⋯ • In this model, the amount of baryon asymmetry YBcan be enlarged at most O(1). • Moreover, anisotropy is strongly restricted to be small from CMB observation. • Expectable enhancement is too small to solve above problem.

本文言語English
ホスト出版物のタイトルProceedings of the 25th Workshop on General Relativity and Gravitation in Japan, JGRG 2015
出版社Kyoto University, Yukawa Institute for Theoretical Physics
ページ334-345
ページ数12
ISBN(電子版)9780000000002
出版ステータスPublished - 2015
イベント25th Workshop on General Relativity and Gravitation in Japan, JGRG 2015 - Kyoto, Japan
継続期間: 2015 12月 72015 12月 11

出版物シリーズ

名前Proceedings of the 25th Workshop on General Relativity and Gravitation in Japan, JGRG 2015
2

Conference

Conference25th Workshop on General Relativity and Gravitation in Japan, JGRG 2015
国/地域Japan
CityKyoto
Period15/12/715/12/11

ASJC Scopus subject areas

  • 原子分子物理学および光学

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