A bird's eye view of f(R)-gravity

Details A bird's eye view of f(R)-gravity A bird's eye view of f(R)-gravity

2009-09-25

arxiv.org/abs/0909.4672v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

28 pages, 4 figures, Invited Review for The Special Issue in Cosmology, The Open Astronomy Journal, Eds. S.D. Odintsov et al

Scientific paper

We survey the landscape of $f(R)$ theories of gravity in their various formulations, which have been used to model the cosmic acceleration as alternatives to dark energy and dark matter. Besides, we take into account the problem of gravitational waves in such theories. We discuss some successes of $f(R)$-gravity (where $f(R)$ is a generic function of Ricci scalar $R$), theoretical and experimental challenges that they face in order to satisfy minimal criteria for viability.

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