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arXiv · 1310.5212

Interacting Viscous Dark Energy in Bianchi Type-I Universe

Hassan Amirhashchi
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Abstract

A solution to the coincidence and Big Rip problems on the bases of an anisotropic space-time is proposed. To do so, we study the interaction between viscous dark energy and dark matter in the scope of the Bianchi type-I Universe. We parameterize the viscosity and the interaction between the two fluids by constants $ζ_{0}$ and $σ$ respectively. A detailed investigation on the cosmological implications of this parametrization has been made. We have also performed a geometrical diagnostic by using the statefinder pairs $\{s, r\}$ and $\{q, r\}$ in order to differentiate between different dark energy models. Moreover, we fit the coupling parameter $σ$ as well as the Hubble's parameter $H_{0}$ of our model by minimizing the $χ^{2}$ through the age differential method, involving a direct measurement of $H$.

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Hassan Amirhashchi. 2013-10-19. Interacting Viscous Dark Energy in Bianchi Type-I Universe. https://doi.org/10.1007/s10509-013-1675-z

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