Unified description of early universe in scalar-tensor theory

  title={Unified description of early universe in scalar-tensor theory},
  author={Chandra Prakash Singh and Shriram},
  journal={Astrophysics and Space Science},
A spatially homogeneous and isotropic Robertson-Walker model with zero-curvature of the universe is studied in Saez-Ballester scalar-tensor theory. Exact solutions of the field equations are obtained for two different early phases of the universe viz. the inflationary and the radiation-dominated phases by using gamma-law equation of state p=(γ-1)ρ in the presence of perfect fluid. The γ-index describing the material content varies continuously with cosmic time so that in the course of its… CONTINUE READING