Bianchi Type III Bulk Viscous Barotropic Fluid Cosmological Models with Variable G and Λ

We investigate the Bianchi type-V bulk viscous barotropic fluid cosmological model with variable gravitational constant G and the cosmological constant A, assuming the condition on metric potential as , where A, B, and C are functions of time t, while m and n are constants. To obtain the deterministic model, we also assume the relations P = p- 3ηH, p = γρ, η = ηoρs, where p is the isotropic pressure, η the bulk viscosity, 0 ≤ γ ≤ 1, H the Hubble constant, η0 and s are constants. Various physical aspects of the model are discussed. The case of n = 1 is also discussed to compare the results with the actual universe.