Dark Energy Model in Anisotropic Bianchi Type-III Space-Time with Variable EoS Parameter

2010/10/12 by Anirudh Pradhan, Hassan Amirhashchi · 2 citations
Physics and Astronomy · #physics.gen-ph

paper · pdf · doi:10.1007/s10509-010-0539-z

published as Astrophys.Space Sci.332:441-448,2011 · 18 pages, 3 figures

arxiv created 2010/10/12 · arxiv updated 2014/07/15

Abstract

A new dark energy model in anisotropic Bianchi type-III space-time with variable equation of state (EoS) parameter has been investigated in the present paper. To get the deterministic model, we consider that the expansion θ in the model is proportional to the eigen value σ²_~2 of the shear tensor σ^j_~i. The EoS parameter ω is found to be time dependent and its existing range for this model is in good agreement with the recent observations of SNe Ia data (Knop et al. 2003) and SNe Ia data with CMBR anisotropy and galaxy clustering statistics (Tegmark et al. 2004). It has been suggested that the dark energy that explains the observed accelerating expansion of the universe may arise due to the contribution to the vacuum energy of the EoS in a time dependent background. Some physical aspects of dark energy model are also discussed.

Cited by

• Bianchi type-V dark energy model with varying EoS parameter
• Accelerating dark energy models with anisotropic fluid in Bianchi type-VI₀ space-time

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