Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1994-07-02
Phys.Rev.D50:7403-7409,1994
Physics
High Energy Physics
High Energy Physics - Theory
15 pages, 3 uuencoded figures. Revised version contains some notational simplifications
Scientific paper
10.1103/PhysRevD.50.7403
The problem of information loss is considered under the assumption that the process of black hole evaporation terminates in the decay of the black hole interior into a baby universe. We show that such theories can be decomposed into superselection sectors labeled by eigenvalues of the third-quantized baby universe field operator, and that scattering is unitary within each superselection sector. This result relies crucially on the quantum-mechanical variability of the decay time. It is further argued that the decay rate in the black hole rest frame is necessarily proportional to $e^{-S_{tot}}$, where $S_{tot}$ is the total entropy produced during the evaporation process, entailing a very long-lived remnant.
Polchinski Joseph
Strominger Andrew
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