Friedmann Universe with Decaying Vacuum Energy

Abstract

In this paper, we investigate the flat FRW universe with cosmological terms and bulk viscous fluid. We have solved the field equations analytically by assuming Hubble parameter H in the model to be a suitable function of time t which yields time dependent deceleration parameter q. The model of universe represents earlier decelerating and the current accelerating universe passing through a transition phase. The stability of the outcome has also been discussed, along with the physical, geometrical, and kinematic behaviour of the model.