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Quantum hair and black hole information
journal contribution
posted on 2023-06-10, 02:43 authored by Xavier CalmetXavier Calmet, Stephen D H HsuIt has been shown that the quantum state of the graviton field outside a black hole horizon carries information about the internal state of the hole. We explain how this allows unitary evaporation: the final radiation state is a complex superposition which depends linearly on the initial black hole state. Under time reversal, the radiation state evolves back to the original black hole quantum state. Formulations of the information paradox on a fixed semiclassical geometry describe only a small subset of the evaporation Hilbert space, and do not exclude overall unitarity.
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Publication status
- Published
File Version
- Accepted version
Journal
Physics Letters BISSN
0370-2693Publisher
ElsevierExternal DOI
Article number
a136995Department affiliated with
- Physics and Astronomy Publications
Research groups affiliated with
- Theoretical Particle Physics Research Group Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2022-02-24First Open Access (FOA) Date
2022-03-01First Compliant Deposit (FCD) Date
2022-02-23Usage metrics
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