Bianchi Type V Matter Filled Universe with Varying Lambda Term in General Relativity

Abstract

Bianchi type V matter filled universe with varying lambda in general relativity are investigated by using the law of variation for the generalized mean Hubble parameter. This yields the constant value of deceleration parameter and generates two types of solutions for the average scale factor one is of power law type and other is of exponential type. The cosmological constant is found to be a decreasing function of time, which is supported by results from recent type Ia supernovae observations. Also it has been found that cosmological constant affects entropy. Some physical and geometric behaviour of the models are discussed.

16 pages, 3 figures

Cited by in corpus (2)

• A Generalized Solution of Bianchi Type-V Models with Time-dependent $G$ and $\Lambda$
• A New Class of LRS Bianchi Type ${\mathrm{VI}}_0$ Universes with Free Gravitational Field and Decaying Vacuum Energy Density