Black-Hole Entropy as Causal Links |
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| Authors: | Djamel Dou Rafael D. Sorkin |
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| Affiliation: | (1) Institute of Exact Science and Technology, University Center of Eloued, Eloued, Algeria;(2) Department of Physics, Syracuse University, Syracuse, New York, 13244-1130 |
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| Abstract: | We model a black hole spacetime as a causal set and count, with a certain definition, the number of causal links crossing the horizon in proximity to a spacelike or null hypersurface  . We find that this number is proportional to the horizon's area on , thus supporting the interpretation of the links as the  horizon atoms that account for its entropy. The cases studied include not only equilibrium black holes but ones far from equilibrium. |
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| Keywords: | black holes causal sets quantum gravity discrete spacetime horizon entropy statistical mechanics |
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