The thermodynamics of self-gravitating systems in equilibrium is holographic
arXiv:1302.4407 · doi:10.1088/0264-9381/31/5/055003
Abstract
We show that, when we study the coexistence of general relativity with thermodynamics, some physical properties that are usually thought of as holographic and lying in the domain of quantum gravity can actually be accessed even at the classical level. In particular, we demonstrate that the thermodynamics of gravitating systems in equilibrium is fully specified by variables defined on the system's boundary, namely, the boundary's geometry and extrinsic curvature. Hence, information is non-trivially incorporated in boundary variables because of the structure (the symmetries) of the classical gravity theory, without any input from quantum theory (such as black hole entropy).
14 pages. Significantly expanded, with detailed explanation of physical interpretation. Version to appear in Class. Quant. Grav
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Cited by in corpus (12)
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