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Landauer's principle and information at the cosmological horizon

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arxiv 2407.15231 v3 pith:VMYZYHDO submitted 2024-07-21 gr-qc cond-mat.stat-mechquant-ph

classification gr-qccond-mat.stat-mechquant-ph
keywords informationcosmologicalhorizonprincipleapparentblackdiscussholes
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We show that the information loss at the cosmological apparent horizon in an expanding universe does not obey Landauer's principle for efficient information erasure. This is in contrast to what happens for black holes, where the principle is upheld exactly. We discuss about the implications this result provides for the differences between information loss at black holes and that at the cosmological apparent horizon, which we term the "Cosmological Information Paradox". We also discuss how this result may point towards incompleteness of quasi-local descriptions of energy and could also point towards different thermodynamic settings in gravitational systems and how information thermodynamics as we know it may have limits to its applicability.

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Cited by 2 Pith papers

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

  1. Generalized Entropies and Black Hole Area Quantization from Landauer's Principle

    gr-qc 2026-05 unverdicted novelty 4.0 of 10

    Landauer's principle applied to entropy transitions between area levels recovers the Bekenstein-Mukhanov spectrum for standard entropy and produces modified spectra for Barrow, Rényi, and Kaniadakis entropies with var...

  2. Black Holes Thermodynamics and Generalised Non-Extensive Entropy

    gr-qc 2025-02 conditional novelty 4.0 of 10

    For Schwarzschild black holes, generalized non-extensive entropies such as Rényi, Tsallis, and four- and five-parameter forms cannot reproduce both the Hawking temperature and the ADM mass; only the Bekenstein-Hawking...

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