Evaporating black holes have leaky horizons or exotic atmospheres

Samuel L. Braunstein; Stefano Pirandola

Evaporating black holes have leaky horizons or exotic atmospheres

Computer Science

Research output: Working paper › Preprint

Abstract

Classically, black holes are compact objects with perfect semi-permeable horizons: Anything may enter, nothing may leave. We consider an axiomatic approach that applies to any black hole type, including arbitrarily near-extremal black holes, that can unitarily evaporate away completely by any mechanism. We show that a quantum black hole must either have a leaky horizon (allowing quantum information out), or it must look very different from its classical counterpart having an external neighborhood consisting of exotic matter with super-ordinary entropic content (such as an `atmosphere' of microscopic black holes).

Original language	English
Pages	1-6
Publication status	Published - 6 Nov 2013

Bibliographical note

Appendices generalize the analysis to allow for arbitrary infallen matter

Keywords

quant-ph
gr-qc
hep-th

Access to Document

http://arxiv.org/abs/1311.1326

Cite this

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