Black Hole Information, Replica Wormholes, and Macroscopic Entanglement
Abstract
In this invited review, we discuss the evaporation of a black hole, with emphasis on the resulting macroscopically distinct patterns of Hawking radiation. The density matrix of this radiation can approach a pure final state in the form of a highly entangled macroscopic superposition state. We note that this exact property is exhibited in replica wormhole calculations, and also in quantum hair effects on Hawking radiation amplitudes. Finally, we revisit the information paradox (Mathur's theorem and firewalls), showing that it can be resolved by macroscopic entanglement.
Keywords
Cite
@article{arxiv.2412.07807,
title = {Black Hole Information, Replica Wormholes, and Macroscopic Entanglement},
author = {Xavier Calmet and Stephen D. H. Hsu},
journal= {arXiv preprint arXiv:2412.07807},
year = {2024}
}
Comments
10 pages, 4 figures. This is an invited review article for IJMPA, which draws from earlier work by the authors in references [3]-[10], and in particular on the earlier article arXiv:2404.02331. It is pedagogical, appropriate for students and younger researchers