Higher dimensional cosmological model with gravitational and cosmological "constants"

In this paper we have considered a cosmological model representing a flat v iscous universe with variable G and A in the context of higher dimensional spacetime. It has been observed that in this model the particle horizon exi sts and the cosmological term varies as inverse square of time. The deceler ation parameter and temperature are well within the observational limits. T he model indicates matter and entropy generation in the early stages of the universe, Further, it is shown that our model generates all models obtaine d by Arbab and Singh et al. in four-dimensional space-time.