Abstract
In the present study, we have investigated (n + 2)-dimensional non-static FRW models with zero curvature in presence of bulk viscosity in the framework of general relativity. To get deterministic solutions, we employed the conditions ζ = ζ 0 θ (where ζ 0 is a constant) and Λ = a S −m (where a and m are constants). Physical and Kinematical parameters of the models are discussed. In the paper, an attempt is made to compare (n + 2)-dimensional FRW models with four dimensional ones, which for n = 2 reduce to four dimensional FRW models. We also established a relation connecting energy density and the radiation temperature in the radiation dominated era. It is also seen that the presence of bulk viscosity accelerates the expansion of the universe, which is in agreement with recent observations.
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Tiwari, R.K., Singh, R. Higher Dimensional Cosmological Models with Bulk Viscous Fluid. Int J Theor Phys 54, 2652–2661 (2015). https://doi.org/10.1007/s10773-014-2497-7
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DOI: https://doi.org/10.1007/s10773-014-2497-7