Bianchi Type-II Cosmological Model with a Linear Equation of State in Vsl Theory

Abstract

We study Bianchi type-II model with time varying constant under the self similarity approach. In first part of the paper we have studied the model by considering time variable G and Λ and obtain the solutions of the field equations by using linear equation of state (EOS) of the form ρ = np + ρ o where n and ρo are constants. It is observed that G must be time growing function while nature of Λ depends on the nature of γ . In the second part of paper we have studied the model by considering variable speed of light (VSL) and obtain the similar types of solutions as in the first model and all the physical parameters which depends on cdt. Arriving to the conclusion that c must be growing time function and Λ depends on value γ.

Bianchi Type-II Fractional Cosmological Model with Variable Lambda

“…They discovered that an accelerated expansion period isotropizes both the expansion anisotropy and the anisotropy of the fluid. A host of authors have investigated spatially homogeneous and anisotropic DE models both in general relativity and in modified theories of gravitation (See [15], [21], [26], [31]).…”