English

Entropy-corrected new agegraphic dark energy in Horava-Lifshitz cosmology

High Energy Physics - Theory 2012-06-05 v3 Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology

Abstract

We study the entropy-corrected version of the new agegraphic dark energy (NADE) model and dark matter in a spatially non-flat Universe and in the framework of Ho\v{r}ava-Lifshitz cosmology. For the two cases containing noninteracting and interacting entropy-corrected NADE (ECNADE) models, we derive the exact differential equation that determines the evolution of the ECNADE density parameter. Also the deceleration parameter is obtained. Furthermore, using a parametrization of the equation of state parameter of the ECNADE model as ωΛ(z)=ω0+ω1z\omega_{\Lambda}(z)=\omega_0+\omega_1 z, we obtain both ω0\omega_0 and ω1\omega_1. We find that in the presence of interaction, the equation of state parameter ω0\omega_0 of this model can cross the phantom divide line which is compatible with the observation.

Keywords

Cite

@article{arxiv.1101.1774,
  title  = {Entropy-corrected new agegraphic dark energy in Horava-Lifshitz cosmology},
  author = {Kayoomars Karami and Mubasher Jamil and Matts Roos and S. Ghaffari and A. Abdolmaleki},
  journal= {arXiv preprint arXiv:1101.1774},
  year   = {2012}
}

Comments

20 pages, 2 figures, to appear in 'Astrophysics and Space Science'