期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 7, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2009/07/022
关键词
inflation; quantum field theory on curved space; dark energy theory
资金
- KOSEF [R32-2008-000-10155]
We provide a detailed study of gravitational reheating in quintessential inflation generalizing previous analyses only available for the standard case when inflation is followed by an era dominated by the energy density of radiation. Quintessential inflation assumes a common origin for inflation and the dark energy of the Universe. In this scenario reheating can occur through gravitational particle production during the inflation-kination transition. We calculate numerically the amount of the radiation energy density, and determine the temperature T-* at which radiation starts dominating over kination. The value of T-* is controlled by the Hubble parameter H-0 during inflation and the transition time Delta t, scaling as H-0(2)[ln(1/H-0 Delta t)](3/4) for H-0 Delta t << 1 and H-0(2)(H-0 Delta t)(-c) for H-0 Delta t >> 1. The model-dependent parameter c is found to be around 0.5 in two different parameterizations for the transition between inflation and kination.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据