Tuesday, May 7, 2013

1305.0856 (Vijay Balasubramanian et al.)

The entropy of a hole in spacetime    [PDF]

Vijay Balasubramanian, Bartlomiej Czech, Borun D. Chowdhury, Jan de Boer
We compute the gravitational entropy of 'spherical Rindler space', a time-dependent, spherically symmetric generalization of ordinary Rindler space, defined with reference to a family of observers traveling along non-parallel, accelerated trajectories. All these observers are causally disconnected from a spherical region H (a 'hole') located at the origin of Minkowski space. The entropy evaluates to S = A/4G, where A is the area of the spherical acceleration horizon, which coincides with the boundary of H. We propose that S is the entropy of entanglement between quantum gravitational degrees of freedom supporting the interior and the exterior of the sphere H.
View original: http://arxiv.org/abs/1305.0856

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