Unification of inflation and cosmic acceleration in the Palatini formalism

Abstract

A modified model of gravity with additional positive and negative powers of the scalar curvature, $R$, in the gravitational action is studied. This is done using the Palatini variational principle. It is demonstrated that using such a model might prove useful to explain both the early time inflation and the late time cosmic acceleration without the need for any form of dark energy.

5 pages, 2 figures; typos corrected, replaced to match published version

References in corpus (3)

• Unified phantom cosmology: inflation, dark energy and dark matter under the same standard
• Oscillating Quintom and the Recurrent Universe
• Newtonian limit of the singular f(R) gravity in the Palatini formalism

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