PreprintCC BY 4.0arXiv
Is Black Hole Evaporation Prediction Friendly?
Abstract
Manchak and Weatherall (2018) formulate the black hole information paradox as a failure of predictability in black hole evaporation spacetimes, diagnosed by non-global hyperbolicity. I offer a strategy for resolving this paradox. I argue that failures of predictability in black hole evaporation are not well diagnosed by non-global hyperbolicity. I then consider two weakenings of global hyperbolicity: prediction and retrodiction friendliness, the failure of which could ground a new paradox. However, deidealized black hole evaporation models can be prediction and retrodiction friendly. Therefore, the information paradox cannot be based upon failures of global hyperbolicity, nor either retrodiction or prediction unfriendliness.
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BibTeX
@misc{ryder2026black,
title = {{Is Black Hole Evaporation Prediction Friendly?}},
author = {Dominic John Ryder},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.09927},
eprint = {2609.09927},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.09927},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Is Black Hole Evaporation Prediction Friendly?
AU - Dominic John Ryder
PY - 2026
DA - 2026/09/09
PB - arXiv
DO - 10.48550/arxiv.2609.09927
UR - https://arxiv.org/abs/2609.09927
AB - Manchak and Weatherall (2018) formulate the black hole information paradox as a failure of predictability in black hole evaporation spacetimes, diagnosed by non-global hyperbolicity. I offer a strategy for resolving this paradox. I argue that failures of predictability in black hole evaporation are not well diagnosed by non-global hyperbolicity. I then consider two weakenings of global hyperbolicity: prediction and retrodiction friendliness, the failure of which could ground a new paradox. However, deidealized black hole evaporation models can be prediction and retrodiction friendly. Therefore, the information paradox cannot be based upon failures of global hyperbolicity, nor either retrodiction or prediction unfriendliness.
ER -