6+1 lessons from f(R) gravity

Details 6+1 lessons from f(R) gravity 6+1 lessons from f(R) gravity

2008-10-30

arxiv.org/abs/0810.5594v1

J.Phys.Conf.Ser.189:012039,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Talk given at the 13th Conference on Recent Developments in Gravity (NEBXIII), Thessaloniki, Greece, 4-6 Jun 2008

Scientific paper

10.1088/1742-6596/189/1/012039

There has been a recent stimulus in the study of alternative theories of gravity lately, mostly triggered from combined motivation coming from cosmology/astrophysics and high energy physics. Among the proposed theories, one that has attracted much attention is f(R) gravity. It is certainly debatable whether such a simplistic modification of General Relativity can constitute a viable alternative theory of gravitation. However, it is quite straightforward to see the merits of such a theory when viewed as a toy theory whose role is to help us understand the implications and difficulties of beyond-Einstein gravity. Under this perspective, I review some of the main lessons we seem to have learned from the study of f(R) gravity in the recent past.

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