Inflationary universe with anisotropic hair

Masaaki Watanabe, Sugumi Kanno, Jiro Soda

研究成果: Contribution to conferencePaper査読

抄録

We study an inflationary scenario with a vector field coupled with an inflaton field and show that the inflationary universe is endowed with anisotropy for a wide range of coupling functions. This anisotropic inflation is a tracking solution where the energy density of the vector field follows that of the inflaton field irrespective of initial conditions. We find a universal relation between the anisotropy and a slow-roll parameter of inflation. Our finding has observational implications and gives a counter example to the cosmic no-hair conjecture.

本文言語英語
ページ379-383
ページ数5
出版ステータス出版済み - 2009
外部発表はい
イベント19th Workshop on General Relativity and Gravitation in Japan, JGRG 2009 - Tokyo, 日本
継続期間: 11 30 200912 4 2009

その他

その他19th Workshop on General Relativity and Gravitation in Japan, JGRG 2009
国/地域日本
CityTokyo
Period11/30/0912/4/09

All Science Journal Classification (ASJC) codes

  • 原子分子物理学および光学

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