Statistical Origin of Gravity

Abstract

Starting from the definition of entropy used in statistical mechanics we show that it is proportional to the gravity action. For a stationary black hole this entropy is expressed as $S=E/2T$, where $T$ is the Hawking temperature and $E$ is shown to be the Komar energy. This relation is also compatible with the generalised Smarr formula for mass.

LaTex, 7 pages, no figure, minor clarifications, references added, to appear in Phys. Rev. D

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