paper

6+1 lessons from f(R) gravity

arXiv:0810.5594 · doi:10.1088/1742-6596/189/1/012039

Abstract

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.

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

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