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Moving mirrors, Page curves and bulk entropies in AdS$_2$

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arxiv 2103.01230 v2 pith:HGVAJED5 submitted 2021-03-01 hep-th cond-mat.stat-mechgr-qc

classification hep-thcond-mat.stat-mechgr-qc
keywords radiationentropiesmirrorsmovingbeenblackbulkcase
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Understanding the entanglement of radiation in QFT has been a long standing challenge, with implications ranging from black hole thermodynamics to quantum information. We demonstrate how the case of the free fermion in $1 + 1$ dimensions reveals the details of the density matrix of the radiation produced by a moving mirror. Using the resolvent method rather than standard CFT techniques we derive the R\'enyi entropies, modular Hamiltonian and flow of the radiation, and determine when mirrors generate unitary transformations.

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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. Entanglement Revivals and Scrambling for Evaporating Black Holes

    hep-th 2026-04 unverdicted novelty 7.0 of 10

    Increasing black hole scrambling time in JT and RST evaporating geometries suppresses and eliminates late-time entanglement revivals in 2d CFT mutual information for disjoint intervals, interpolating between quasipart...

  2. Replica Wormholes, Modular Entropy, and Capacity of Entanglement in JT Gravity

    hep-th 2025-01 conditional novelty 4.0 of 10

    In JT gravity toy models, late-time modular entropy and capacity of entanglement scale inversely with n times the inverse temperature, supporting a thermal reading of the replica parameter.

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