The ω =-1 crossing of the quintom model with slowly-varying potentials

被引：28

作者：

Alimohammadi, M. ^{[1
]}

Sadjadi, H. Mohseni ^{[1
]}

机构：

[1] Univ Tehran, Dept Phys, N Karegar Ave, Tehran, Iran

来源：

PHYSICS LETTERS B | 2007年 / 648卷 / 2-3期

关键词：

D O I：

10.1016/j.physletb.2007.03.014

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Considering the quintom model with arbitrary potential, it is shown that there always exists a solution which evolves from omega > -1 region to omega < -1 region. The problem is restricted to the slowly varying potentials, i.e. the slow-roll approximation. It is seen that the rate of this phase transition only depends on the energy density of matter at transition time, which itself is equal to the kinetic part of quintom energy density at that time. The perturbative solutions of the fields are also obtained. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：113 / 118

页数：6

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