Cosmic Acceleration and f (R) Theory: Perturbed Solution in a Matter FLRW Model
2016
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.
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