Phys. Rev. Lett. 98, 080502 (2007) [4 pages]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 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. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.98.080502
DOI:
10.1103/PhysRevLett.98.080502
PACS:
03.67.−a, 04.70.Dy, 05.70.Ln
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