Constructing dark energy models with late time de Sitter attractor

Details Constructing dark energy models with late time de Sitter attractor Constructing dark energy models with late time de Sitter attractor

2003-06-04

arxiv.org/abs/hep-th/0306033v2

Phys.Rev. D68 (2003) 083514

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, 9 eps figures, this condensed version will be published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.68.083514

In this paper, we describe a way to construct a class of dark energy models that admit late time de Sitter attractor solution. In the canonical scalar and Born-Infeld scalar dark energy models, we show mathematically that a simple sufficient condition for the existence of a late time de Sitter like attractor solution is that the potentials of the scalar field have non-vanishing minimum while this condition becomes that the potentials have non-vanishing maximum for the phantom models. These attractor solutions correspond to an equation of state $w=-1$ and a cosmic density parameter $\Omega_{\phi}=1$, which are important features for a dark energy model that can meet the current observations.

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