Late-time cosmic acceleration: Dark gravity

Details Late-time cosmic acceleration: Dark gravity Late-time cosmic acceleration: Dark gravity

2010-11-29

arxiv.org/abs/1011.6176v1

J.Phys.Conf.Ser.314:012060,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages. Prepared for the proceedings of the Spanish Relativity meeting (ERE2010), Granada, Spain, 6-10 Sep 2010

Scientific paper

10.1088/1742-6596/314/1/012060

A central theme in cosmology is the perplexing fact that the Universe is undergoing an accelerating expansion. The latter, one of the most important and challenging current problems in cosmology, represents a new imbalance in the governing gravitational field equations. Several candidates, responsible for this expansion, have been proposed in the literature, in particular, dark energy models and modified gravity, amongst others. In this paper, we explore the possibility that the late-time cosmic acceleration is due to infra-red modifications of Einstein's theory of General Relativity, and review some of the modified theories of gravity that address this intriguing and exciting problem facing modern physics.

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