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Black hole information recovery in JT gravity

Zsolt Gyongyosi, Timothy Hollowood Orcid Logo, Prem Kumar Orcid Logo, Andrea Legramandi, Neil Talwar

Journal of High Energy Physics, Volume: 2023, Issue: 1

Swansea University Authors: Zsolt Gyongyosi, Timothy Hollowood Orcid Logo, Prem Kumar Orcid Logo, Andrea Legramandi, Neil Talwar

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Abstract

We consider the issue of information recovery for an object carrying energy and entropy into a black hole using the generalized entropy formalism, in the context of JT gravity where the backreaction problem can be solved exactly. We verify the main aspects of the Hayden-Preskill scenario but with so...

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Published in: Journal of High Energy Physics
ISSN: 1029-8479
Published: Springer Science and Business Media LLC 2023
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa62488
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Abstract: We consider the issue of information recovery for an object carrying energy and entropy into a black hole using the generalized entropy formalism, in the context of JT gravity where the backreaction problem can be solved exactly. We verify the main aspects of the Hayden-Preskill scenario but with some refinements. We show that the information is encoded in the Hawking radiation in a redundant way, as expected for a quantum error correcting code. We show how quantum extremal surfaces associated to information recovery have the form of a python’s lunch and thereby show that the complexity of decoding is exponential in a combination of the entropy shift of the black hole and the entropy of the object. We also show that an infalling observer must have a smooth experience at the horizon and we calculate their endurance proper time inside the black hole before they are radiated out.
Keywords: 2D Gravity; Black Holes
College: Faculty of Science and Engineering
Issue: 1