English

An Interacting Scenario for Dark Energy in Bianchi Type-I Universe

General Relativity and Quantum Cosmology 2015-06-19 v1 Cosmology and Nongalactic Astrophysics

Abstract

We study the interaction between dark energy (DE) and dark matter (DM) in the scope of anisotropic bianchi type I space-time. First we derive the general form of the dark energy equation of state parameter (EoS) in both non-interacting and interacting cases and then we examine it's future by applying a hyperbolic scale factor. It is shown that in non-interacting case, depending on the value of the anisotropy parameter KK, the dark energy EoS parameter is varying from phantom to quintessence whereas in interacting case EoS parameter vary in quintessence region. However, in both cases the dark energy EoS parameter ωde\omega^{de}, ultimately (i. e at z=1z=-1) tends to the cosmological constant (ωde=1\omega^{de}=-1). Moreover, we fixed the cosmological bound on the anisotropy parameter KK by using the recent observational data of Hubble parameter.

Keywords

Cite

@article{arxiv.1405.5714,
  title  = {An Interacting Scenario for Dark Energy in Bianchi Type-I Universe},
  author = {Hassan Amirhashchi and S. N. A. Qazi and Hishamuddin Zainuddin},
  journal= {arXiv preprint arXiv:1405.5714},
  year   = {2015}
}

Comments

12 pages, 6 figures, Research in Astronomy and Astrophysics, 2014