paper

Dynamics of gravitational field within a wave front and thermodynamics of black holes

arXiv:gr-qc/0412042 · doi:10.1103/PhysRevD.70.124010

Abstract

Hamiltonian dynamics of gravitational field contained in a spacetime region with boundary being a null-like hypersurface (a wave front) is discussed. Complete Hamiltonian formula for the dynamics (with no surface integrals neglected) is derived. A quasi-local proof of the first law of black holes thermodynamics is obtained as a consequence, in case when is a non-expanding horizon. The zeroth law and Penrose inequalities are discussed from this point of view.

14 pages, 2 figures

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