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

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 $K$, 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 ${\omega }^{de}$, ultimately (i. e at $z=-1$) tends to the cosmological constant (${\omega }^{de}=-1$). Moreover, we fixed the cosmological bound on the anisotropy parameter $K$ by using the recent observational data of Hubble parameter.

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

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