Exact solution of FRW perfect uid model interacting with zero-rest-mass scalar field and electromagnetic field in B-D theory

Considering a spherically symmetric nonstatic cosmological at model of the Robertson-Walker universe, the problem of perfect uid distribution interacting with the gravitational field in the presence of a zero-rest-mass scalar field and electromagnetic field in Brans-Dicke (B-D) theory has been investigated. Exact solutions are obtained by using a general approach of solving the partial differential equations and it has been observed that the electromagnetic field cannot survive the cosmological at model due to the action caused by the presence of the zero-rest-mass scalar field, and the isotropic pressure p turns out to be negative. The pressure and density are found to be independent of time.