Black Hole Information Recovery in JT Gravity
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
Cite
@article{arxiv.2209.11774,
title = {Black Hole Information Recovery in JT Gravity},
author = {Zsolt Gyongyosi and Timothy J. Hollowood and S. Prem Kumar and Andrea Legramandi and Neil Talwar},
journal= {arXiv preprint arXiv:2209.11774},
year = {2023}
}
Comments
minor corrections