Pismo uredniku
Bianchi type-III string cosmological models with bulk viscosity and time-dependent L term
R. K. Tiwari
; Department of Mathematics, Govt. Model Science College, Rewa (MP) India
U. K. Dwivedi
; Department of Mathematics, Govt. Engineering College, Rewa (MP) India
Sažetak
We study Einstein’s field equations in Bianchi type-III string cosmological models with bulk viscosity and variable cosmological term Λ. Exact solutions of the field equations are obtained by assuming the conditions: the bulk viscosity is proportional to the expansion scalar, ξ ∝ θ, expansion scalar is proportional to shear scalar, θ ∝ σ, and Λ is proportional to the Hubble parameter. The corresponding physical interpretations of the cosmological solutions are also discussed.
Ključne riječi
Bianchi type-III string cosmological model; variable Λ; bulk viscosity; expansion scalar; shear scalar; Hubble parameter
Hrčak ID:
304582
URI
Datum izdavanja:
2.8.2009.
Posjeta: 117 *