Cosmic acceleration and $f(R)$ theory: perturbed solution in a matter FLRW model
arXiv:1311.7281 · doi:10.1007/s10773-015-2713-0
Abstract
In the present paper we consider $f(R)$ gravity theories in the metric approach and we derive the equations of motion, focusing also on the boundary conditions. In such a way we apply the general equations to a first order perturbation expansion of the Lagrangian. We present a model able to fit supernovae data without introducing dark energy.
10 pages, 1 figure