Interacting Viscous Dark Energy in Bianchi Type-I Universe

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 ${\zeta }_0$ and $\sigma$ 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 $\sigma$ as well as the Hubble's parameter $H_0$ of our model by minimizing the ${\chi }^2$ through the age differential method, involving a direct measurement of $H$.

12 pages, 9 figures, 2 tables

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Cited by in corpus (6)

• Current Constraints on Anisotropic and Isotropic Dark Energy Models
• Probing Dark Energy in The scope of Bianchi type I Spacetime
• Bianchi I Model: An Alternative Way To Model The Presentday Universe
• Viscous Dark Energy In Bianchi Type V Space-Time
• Modeling of accelerating Universe with bulk viscous fluid in Bianchi V space-time
• Viscous Dark Energy and Phantom Field in An Anisotropic Universe