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Comment on ``The black hole final state''

Daniel Gottesman et al JHEP03(2004)026   doi: 10.1088/1126-6708/2004/03/026  Help

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Daniel Gottesman1 and John Preskill2
1 Perimeter Institute, Waterloo ON N2V 1Z3, Canada
2 Institute for Quantum Information, California Institute of Technology, Pasadena, CA 91125, U.S.A.
E-mail: preskill@theory.caltech.edu

Abstract. Horowitz and Maldacena have suggested that the unitarity of the black hole S-matrix can be reconciled with Hawking's semiclassical arguments if a final-state boundary condition is imposed at the spacelike singularity inside the black hole. We point out that, in this scenario, departures from unitarity can arise due to interactions between the collapsing body and the infalling Hawking radiation inside the event horizon. The amount of information lost when a black hole evaporates depends on the extent to which these interactions are entangling.

Key words: Black Holes in String Theory; Black Holes

E-print number: hep-th/0311269
Cited: by
Refers: to

Received 5 March 2004, accepted for publication 8 March 2004
Published 10 March 2004

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