Bulg. J. Phys. vol.45 no.4 (2018), pp. 385-393

Effect of Variable Deceleration Parameter and Polytropic Equation of State in Kantowski-Sachs Universe

S.W. Samdurkar1, S. Bawnerkar2
1Vidya Vikas Arts, Commerce and Science College, Samudrapur, India
2Shah and Anchor Kutchhi Engineering College, Mumbai, India
Abstract. In the present study, we have obtained cosmological models with variable deceleration parameter q = r(t) and polytropic equation of state p = ωρ2 - ρ in the framework of Kantowski-Sachs universe. A new class of exact solutions has been obtained by assuming deceleration parameter as a variable. Here we discussed models for two cases polynomial and exponential. The physical aspects of these models have also been investigated.

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