f(R) gravity: successes and challenges

Details f(R) gravity: successes and challenges f(R) gravity: successes and challenges

2008-10-15

arxiv.org/abs/0810.2602v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

18 pages, latex. Presented at SIGRAV2008, 18th Congress of the Italian Society of General Relativity and Gravitation, Cosenza,

Scientific paper

We review the state of the art of f(R) theories of gravity (in their various
formulations), which have been proposed as an explanation of the cosmic
acceleration alternative to dark energy. The successes of f(R) gravity are
discussed, together with the challenges imposed by minimal criteria for their
viability.

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