Abstract
The Bianchi type- III and Kantowski-Sachs (KS) Universes filled with dark energy from a wet dark fluid has been considered. A new equation of state for the dark energy component of the universe has been used. It is modeled on the equation of state ρ=γ(ρ -ρ *) , which can describe a liquid, for example water. The exact solutions to the corresponding field equations are obtained in quadrature form. The solution for constant deceleration parameter have been studied in detail for power-law and exponential forms both. The case γ = 0,γ =1,and γ =1/3have been also analysed.
Highlights
The nature of the dark energy component of the universe [1,2,3] remains one of the deepest mysteries of cosmology
We use Wet Dark Fluid (WDF) as a model for dark energy. This model is in the spirit of the generalized Chaplygin gas (GCG) [19], where a physically motivated Equation of state is offered with properties relevant for the dark energy problem
In this paper we study the Bianchi type- III and Kantowski-Sachs Universes with matter term with dark energy treated as a Dark Fluid satisfying the Equation of state (1)
Summary
The nature of the dark energy component of the universe [1,2,3] remains one of the deepest mysteries of cosmology. We use Wet Dark Fluid (WDF) as a model for dark energy. This model is in the spirit of the generalized Chaplygin gas (GCG) [19], where a physically motivated Equation of state is offered with properties relevant for the dark energy problem. R. CHAUBEY behaves as a cosmological constant as well as a standard fluid with an Equation of state p =. Chaubey and Chaubey et al ([29,30]) have studied some anisotropic cosmological universes with wet dark fluid. In this paper we study the Bianchi type- III and Kantowski-Sachs Universes with matter term with dark energy treated as a Dark Fluid satisfying the Equation of state (1). The models with constant deceleration parameter have been studied in detail
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