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A brief history of Hawking’s information paradox
journal contribution
posted on 2023-06-10, 04:17 authored by Xavier CalmetXavier Calmet, Stephen D H HsuIn this invited review, we describe Hawking’s information paradox and a recently proposed resolution of it. Explicit calculations demonstrate the existence of quantum hair on black holes, meaning that the quantum state of the external graviton field depends on the internal state of the black hole. Simple quantum mechanics then implies that Hawking radiation amplitudes depend on the internal state, resulting in a pure final radiation state that preserves unitarity and, importantly, violates a factorization assumption which is central to the original paradox. Black hole information is encoded in entangled macroscopic superposition states of the radiation.
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- Published
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- Accepted version
Journal
European Physical Society Letters (EPL)ISSN
0295-5075Publisher
Institute of Physics PublishingExternal DOI
Issue
4Volume
139Page range
1-5Department affiliated with
- Physics and Astronomy Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2022-07-19First Compliant Deposit (FCD) Date
2022-07-18Usage metrics
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