Palatini Approach Beyond Einstein's Gravity

Details Palatini Approach Beyond Einstein's Gravity Palatini Approach Beyond Einstein's Gravity

2011-12-07

arxiv.org/abs/1112.1572v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

To appear in the proceedings of the XII International Symposium Fundamental Frontiers of Physics (Udine, Italy, Nov.21-23, 201

Scientific paper

I review recent results obtained for extensions of general relativity formulated within the Palatini formalism, an approach in which metric and connection are treated as independent geometrical entities. The peculiar dynamics of these theories, governed by second-order equations and having no new degrees of freedom, makes them specially suitable to address certain aspects of quantum gravity phenomenology, construct nonsingular bouncing cosmologies, and explore black hole interiors, which in the Reissner-Nordstrom case develop a compact core of finite density instead of a point-like singularity.

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