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Islands in the Stream of Hawking Radiation

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arxiv 2104.00052 v3 pith:SGNZFUXY submitted 2021-03-31 hep-th gr-qc

Timothy J. Hollowood , S. Prem Kumar , Andrea Legramandi , Neil Talwar This is my paper · ORCID
classification hep-thgr-qc
keywords radiationentropyislandstreamformulahawkingadiabaticallows
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We consider the island formula for the entropy of subsets of the Hawking radiation in the adiabatic limit where the evaporation is very slow. We find a simple concrete `on-shell' formula for the generalized entropy which involves the image of the island out in the stream of radiation, the `island in the stream'. The resulting recipe for the entropy allows us to calculate the quantum information properties of the radiation and verify various constraints including the Araki-Lieb inequality and strong subadditivity.

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  1. Black Hole Multi-Entropy Curves

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    For a Haar-random model of an evaporating black hole, the q-partite Renyi multi-entropy of the black hole plus q-1 radiation subsystems peaks at a multi-entropy time later than the Page time and does not vanish at com...

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