HackerPapers

arXiv:2112.05171hep-th

Quantum Hair and Black Hole Information

Xavier Calmet, Stephen D. H. Hsu

Early discovery. Linked by one identifiable commenter. This paper is outside the main ranking; a mention is not an endorsement.

Abstract

It 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.

arXiv comments
10 pages. Published version (typos corrected): Physics Letters B Volume 827, 10 April 2022, 136995
Journal reference
DOI
doi:10.1016/j.physletb.2022.136995
Subjects
hep-thHigh Energy Physics, Theory gr-qcGeneral Relativity and Quantum Cosmology

On Hacker News

Linked by 1 identifiable commenter in 1 comment across 1 thread, from Mar 2022 to Mar 2022.

Comments linking this paper, per year.

Discussed in comments1 thread

  1. Scientists may have solved Stephen Hawking's black hole paradox 1 comment

    • There are two papers linked at the bottom of the not-so-fine article, both leading to "green lock" unpaywall https://research.lib.buffalo.edu/articleaccess/unpaywall https://unpwaywall.org/ destinations. The articles correspond to the following arxiv preprints…

      raattgiftView on HNParent context

Submitted to Hacker News

Connected through shared HN threads, not inferred similarity or a recommendation.