Generalized Model for $Λ$-Dark Energy

Details Generalized Model for $Λ$-Dark Energy Generalized Model for $Λ$-Dark Energy

2008-02-07

arxiv.org/abs/0802.1032v1

Int.J.Mod.Phys.D18:389-396,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 Latex pages

Scientific paper

10.1142/S021827180901456X

Einstein field equations under spherically symmetric space-times are considered here in connection to dark energy investigation. A set of solutions are obtained for a kinematical $\Lambda$ model, viz., $\Lambda \sim (\dot a/a)^2$ without assuming any {\it a priori} value for the curvature constant and the equation of state parameter $\omega$. Some interesting results, such as the nature of cosmic density $\Omega$ and deceleration parameter $q$, have been obtained with the consideration of two-fluid structure instead of usual uni-fluid cosmological model.

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