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Island may not save the information paradox of Liouville black holes

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arxiv 2105.03271 v2 pith:GSYVXK5H submitted 2021-05-07 hep-th gr-qc

Island may not save the information paradox of Liouville black holes

classification hep-th gr-qc
keywords blackislandliouvilleentropygeneralizedholesinformationparadox
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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By using the quantum extremal island formula, we perform a simple calculation of the generalized entanglement entropy of Hawking radiation from the two dimensional Liouville black hole. No reasonable island was found when extremizing the generalized entropy. We explain qualitatively the reason why the page curve cannot be reproduced in the present model. This suggests that the islands may not necessarily save the information paradox for the Liouville black holes.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. New insights on mutual information in the island approach to the Page curve

    hep-th 2026-07 conditional novelty 5.0

    At scrambling time I(B+:B−)=0 forces I(I:R)→∞, interpreted as conservation of geometric correlation, while I(I:R+:R−) is shown always negative via Cauchy-slice identities.

  2. Thermodynamics and information recovery of Schwarzschild AdS black holes in conformal Killing gravity

    gr-qc 2026-03 unverdicted novelty 5.0

    In conformal Killing gravity, Schwarzschild AdS black holes obey the Bekenstein-Hawking area law, exhibit parameter-dependent Van der Waals-like phase transitions for positive values, and recover information via islan...

  3. Island of acoustic black hole in Schwarzschild spacetime

    hep-th 2025-12 conditional novelty 4.0

    For a Schwarzschild-surrounded acoustic black hole, phonon entanglement entropy follows a Page curve in the non-extremal case but diverges (no Page time) in the extremal case, according to the island formula.