Information loss in black holes
Abstract
The question of whether information is lost in black holes is investigated using Euclidean path integrals. The formation and evaporation of black holes is regarded as a scattering problem with all measurements being made at infinity. This seems to be well formulated only in asymptotically AdS spacetimes. The path integral over metrics with trivial topology is unitary and information preserving. On the other hand, the path integral over metrics with nontrivial topologies leads to correlation functions that decay to zero. Thus at late times only the unitary information preserving path integrals over trivial topologies will contribute. Elementary quantum gravity interactions do not lose information or quantum coherence.
 Publication:

Physical Review D
 Pub Date:
 October 2005
 DOI:
 10.1103/PhysRevD.72.084013
 arXiv:
 arXiv:hepth/0507171
 Bibcode:
 2005PhRvD..72h4013H
 Keywords:

 04.70.Dy;
 Quantum aspects of black holes evaporation thermodynamics;
 High Energy Physics  Theory
 EPrint:
 Phys.Rev.D72:084013,2005