Quasi-Newtonian Cosmological Models in Scalar-Tensor Theories of Gravity

  • Heba Sami Abdulrahman North-West University
  • Amare Abebe
Keywords: f(R) gravity, scalar field, quasi-Newtonian cosmologies, perturbations

Abstract

In this contribution, classes of shear-free cosmological dust models with irrotational fluid flows will be investigated in the context of scalar-tensor theories of gravity. In particular, the integrability conditions describing a consistent evolution of the linearised field equations of quasi-Newtonian universes are pre-
sented. We also derive the covariant density and velocity propagation equations of such models and analyse the corresponding solutions to these perturbation equations.

Published
2018-05-12
Section
Articles