Quantum information transfer and models for black hole mechanics
May, 201214 pages
Published in:
- Phys.Rev.D 87 (2013) 6, 064031
- Published: Mar 21, 2013
e-Print:
- 1205.4732 [hep-th]
Report number:
- NSF-KITP-12-098
Citations per year
Abstract: (APS)
General features of information transfer between quantum subsystems, via unitary evolution, are investigated, with applications to the problem of information transfer from a black hole to its surroundings. A particularly direct form of quantum information transfer is “subsystem transfer,” which can be characterized by the saturation of a subadditivity inequality. We also describe more general unitary quantum information transfer, and categorize different models for black hole evolution. Evolution that only creates paired excitations inside/outside the black hole is shown not to extract information, but information-transferring models exist both in the “saturating” and “nonsaturating” category. The former more closely capture thermodynamic behavior; the latter generically have an enhanced energy flux, beyond that of Hawking.Note:
- 31 pages, harvmac. v2: nomenclature change, minor added explanation. v3: small corrections/rewordings; improved figure; version to match publication in PRD
- 04.60.-m
- 03.67.-a
- 03.65.Ud
- 04.70.Dy
- energy: flux
- unitarity
- saturation
- radiation: Hawking
- black hole: entropy
- correlation
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