Work

Better Late than Never: Information Retrieval from Black Holes

Year: 2013

Type: article

Abstract: We show that, in order to preserve the equivalence principle until late times in unitarily evaporating black holes, the thermodynamic entropy of a black hole must be primarily entropy of entanglement across the event horizon. For such black holes, we show that the information entering a black hole becomes encoded in correlations within a tripartite quantum state, the quantum analogue of a one-time pad, and is only decoded into the outgoing radiation very late in the evaporation. This behavior generically describes the unitary evaporation of highly entangled black holes and requires no specially designed evolution. Our work suggests the existence of a matter-field sum rule for any fundamental theory.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.110.101301

Authors: Samuel L. Braunstein, Stefano Pirandola, Karol Życzkowski

Institutions: University of York, Jagiellonian University, Center for Theoretical Physics, Institute of Physics, Polish Academy of Sciences

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,750

Funder: Deutsche Forschungsgemeinschaft