Noether Charge and Black Hole Entropy in Modified Theories of Gravity - General Relativity and Quantum CosmologyReportar como inadecuado




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Abstract: The entropy of black holes in modified theories of gravity is examined in thePalatini formalism using the Noether Charge approach. It is shown that, if thegravitational coupling constant is properly identified, the entropy of a blackhole is one-quarter of the horizon area in fR theories coupled to conformallyinvariant matter. If matter is present that is not conformally invariant theentropy is still proportional to the area of the black hole, but thecoefficient is generally not one-quarter. The entropy of black holes ingeneralized dilaton theories and in theories with Lagrangians that depend on anarbitrary function of the Ricci tensor are also examined.



Autor: Dan N. Vollick

Fuente: https://arxiv.org/







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