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

Bianchi type-III bulk viscous barotropic fluid cosmological model with variables G and Λ is investigated. To obtain the realistic model, we assume the conditions between the metric potentials A, B, C as ^・A/A=^・B/B=m₁/tⁿ and ^・C/C=m₂/tⁿ, P=p-3ηH,η=η₀ ρ^s, p =γρ, 0≤γ≤1, where p is isotropic pressure, η the coefficient of bulk viscosity, η₀ and S the constants, H the Hubble constant, m₁= 2m₂ where m₁>0, m₂>0. The solutions obtained lead to inflationary phase and the results obtained match with the observations. The case n=1 for S=1 is also discussed, relating the results with the observations.