A non-perturbative second law of black hole mechanics in effective field theory
arxiv(2023)
摘要
We describe a method for defining dynamical black hole entropy in
gravitational effective field theories (EFTs). The entropy is constructed order
by order in derivatives. For any fixed number of derivatives, the entropy
satisfies a non-perturbative second law of black hole mechanics if the black
hole remains within the regime of validity of EFT. In equilibrium the entropy
reduces to the Wald entropy. It reduces to the entropy defined by Hollands et
al in theories of vacuum gravity with up to 10 derivatives.
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