Unification of inflation and cosmic acceleration in the Palatini formalism

Details Unification of inflation and cosmic acceleration in the Palatini formalism Unification of inflation and cosmic acceleration in the Palatini formalism

2005-09-08

arxiv.org/abs/gr-qc/0509029v3

Phys.Rev. D73 (2006) 063515

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

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

Scientific paper

10.1103/PhysRevD.73.063515

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.

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