Anisotropic inflation from vector impurity

Sugumi Kanno, Masashi Kimura, Jiro Soda, Shuichiro Yokoyama

研究成果: Contribution to journalArticle査読

88 被引用数 (Scopus)

抄録

We study an inflationary scenario with a vector impurity. We show that the universe undergoes anisotropic inflationary expansion due to a preferred direction determined by the vector. Using the slow roll approximation, we find a formula for determining the anisotropy of the inflationary universe. We discuss possible observable predictions of this scenario. In particular, it is stressed that primordial gravitational waves can be induced from curvature perturbations. Hence, even in low scale inflation, a sizable amount of primordial gravitational waves may be produced during inflation.

本文言語英語
論文番号034
ジャーナルJournal of Cosmology and Astroparticle Physics
2008
8
DOI
出版ステータス出版済み - 8 1 2008
外部発表はい

All Science Journal Classification (ASJC) codes

  • 天文学と天体物理学

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