English

Constructing dark energy models with late time de Sitter attractor

High Energy Physics - Theory 2009-11-10 v2 Astrophysics General Relativity and Quantum Cosmology

Abstract

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=1w=-1 and a cosmic density parameter Ωϕ=1\Omega_{\phi}=1, which are important features for a dark energy model that can meet the current observations.

Keywords

Cite

@article{arxiv.hep-th/0306033,
  title  = {Constructing dark energy models with late time de Sitter attractor},
  author = {Jian-gang Hao and Xin-zhou Li},
  journal= {arXiv preprint arXiv:hep-th/0306033},
  year   = {2009}
}

Comments

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