Bianchi type-VI0 bulk viscous string cosmological model in Brans-Dicke scalar-tensor theory of gravitation

摘要

In this paper, we derive Brans-Dicke (Phys. Rev. 124, 925 (1961)) field equations with the help of a spatially homogeneous and anisotropic Bianchi type-VI0 metric, in the presence of a bulk viscous fluid, containing one-dimensional cosmic strings. A cosmological model, which represents a bulk viscous string universe in this theory of gravitation, is obtained using some plausible physical conditions. Some physical and kinematical properties of the model are also discussed.