Quantum information cannot be completely hidden in correlations: implications for the black-hole information paradox

Can quantum-information theory shed light on black-hole evaporation? By entangling the in-fallen matter with an external system we show that the black-hole information paradox becomes more severe, even for cosmologically sized black holes. We rule out the possibility that the information about the i...

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Bibliographic Details
Published in:Physical review letters 2007-02, Vol.98 (8), p.080502-080502, Article 080502
Main Authors: Braunstein, Samuel L, Pati, Arun K
Format: Article
Language:English
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Summary:Can quantum-information theory shed light on black-hole evaporation? By entangling the in-fallen matter with an external system we show that the black-hole information paradox becomes more severe, even for cosmologically sized black holes. We rule out the possibility that the information about the in-fallen matter might hide in correlations between the Hawking radiation and the internal states of the black hole. As a consequence, either unitarity or Hawking's semiclassical predictions must break down. Any resolution of the black-hole information crisis must elucidate one of these possibilities.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.98.080502