Bianchi-V string cosmological model and late time acceleration

Abstract

In the present work we have searched the existence of the late time acceleration of the universe with string fluid as source of matter in Bianchi V space-time. To get the deterministic solution, we choose the scale factor as increasing function of time that yields a time dependent deceleration parameter, representing a model which generates a transition of universe from early decelerating phase to recent accelerating phase. The study reveals that strings dominate the early universe and eventually disappear from the universe for sufficiently large times i. e. at present epoch. The same is observed by current astronomical observations. The physical behaviour of universe has been discussed in detail.

8 pages, 4 figures, Accepted for publication in Res. Astron. Astrophys

References in corpus (2)

• Accelerating dark energy models in bianchi Type-V space-time
• Cylindrically Symmetric Inhomogeneous Universes with a Cloud of Strings

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• Anisotropic massive strings in scalar-tensor theory of gravitation
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• Interacting Viscous Dark Energy in Bianchi Type-III Universe
• Lyra's cosmology of homogeneous and isotropic universe in Brans-Dicke theory
• Cosmic Evolution of the Kantowski-Sachs Universe in the Context of a Bulk Viscous String in Teleparallel Gravity
• Anisotropic Bianchi-I Cosmological Models in String Cosmology with Variable Deceleration Parameter
• Large-scale structure with superhorizon isocurvature dark energy