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We compute the mutual information of two Hawking particles emitted consecutively by an evaporating black hole. Following Page, we find that the mutual information is of order exp(-S) where S is the entropy of the black hole. We speculate on implications for black hole unitarity, in particular on a possible failure of locality at large distances.


This work was originally published in Physical Review D - Particles, Fields, Gravitation and Cosmology, available at DOI: 10.1103/PhysRevD.88.084010

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