Abstract

The present paper deals with the FRW-Cosmological Model of universe for $W_{2}$ flat perfect fluid space time. Einstein field equations with variable cosmological constant ($\Lambda$) has been obtained for such spacetime and in order to get the complete cosmological solution the law of variation for Hubble's parameter is considered. A new class of solution have been discussed for the Einstein field equations with variable cosmological constant in which the pressure, energy density, and cosmological constant $\Lambda$ are found to be decreasing function of cosmic time. The physical and kinematical properties of models are also discussed.

Keywords and Phrases

$W_{2}$ flat spacetime, FRW- spacetime, Perfect fluid spacetime.

A.M.S. subject classification

83C05, 83C15, 83F05.

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