Dark energy model with variable $q$ and $ω$ in LRS Bianchi-II space-time

Details Dark energy model with variable $q$ and $ω$ in LRS Bianchi-II space-time Dark energy model with variable $q$ and $ω$ in LRS Bianchi-II space-time

2011-10-21

arxiv.org/abs/1110.4887v1

Physics

General Physics

15 pages, 5 figures

Scientific paper

The present study deals with spatial homogeneous but totally anisotropic and non flat locally rotationally symmetric (LRS) Bianchi-II dark energy model in general relativity. The Einstein's field equations have been solved exactly by taking into account the proportionality relation between one of the components of shear scalar $(\sigma^{1}_{1})$ and expansion scalar $(\vartheta)$, which, for some suitable choices of problem parameters, yields time dependent equation of state (EoS) and deceleration parameter (DP), representing a model which generates a transition of universe from early decelerating phase to present accelerating phase. The Hubble's parameter $(H)$ and distance modulus $(\mu)$ in our descended model are found to be good concordance with recent data of astrophysical observations under appropriate condition. The physical and geometrical behavior of universe have been discussed in detail.

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