Quintom cosmologies with arbitrary potentials
天体物理学
2008-11-26 v2 广义相对论与量子宇宙学
高能物理 - 唯象学
高能物理 - 理论
摘要
In this paper we investigate quintom cosmologies with arbitrary potentials from the dynamical systems perspective. The dynamical systems analysis is complete in the sense that it includes the asymptotic regime where both scalar fields diverge, which proves to be particularly relevant in connection with the existence of tracking phases. The results of the present study indicate that the existence of phantom attractors is not generic: for quintom models there may exist either de Sitter attractors associated with the saddle points of the potential, or tracking attractors in the asymptotic regime where the scalar fields diverge.
引用
@article{arxiv.astro-ph/0701353,
title = {Quintom cosmologies with arbitrary potentials},
author = {Ruth Lazkoz and Genly León and Israel Quiros},
journal= {arXiv preprint arXiv:astro-ph/0701353},
year = {2008}
}
备注
revtex4, 9 pages, 3 eps figures, Article in press at PLB