Some Bianchi Type IX Stiff Fluid Tilted Cosmological Models with Bulk Viscosity in General Relativity

摘要

Bianchi type IX stiff fluid tilted cosmological models with bulk viscosity areinvestigated. To get the deterministic model, we have assumed a supplementary conditionA = Bn where A and B are metric potentials and n is the constant. The behaviour of the modelin presence and absence of bulk viscosity and other physical aspects are also discussed. To getthe deterministic solution in terms of cosmic time t, we have also discussed the physical aspectsof the model for n = 2.