Evolution of anisotropic viscous fluid Universe model with varying cosmological and gravitational constants.

This paper deals with a new set of exact solutions obtained by solving non-linear differential equations of Einstein field equation for anisotropic cosmological models representing Bianchi Type V space-time geometry. The active role of dynamical G and Λ with polynomial type growth of scale factor in terms of cosmic time in the expanding universe has been explored. The first section of this paper is devoted to finding non-causal cosmological solutions, whereas in the second section causal cosmological solutions have been obtained. In both sections, cosmological parameters satisfy the observational behavior of the universe. [ABSTRACT FROM AUTHOR]