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Pulling Out the Island with Modular Flow

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arxiv 1912.02210 v2 pith:AYXD2VMH submitted 2019-12-04 hep-th

Pulling Out the Island with Modular Flow

classification hep-th
keywords islandblackbulkflowmodularholeinformationradiation
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Recent works have suggested that the entanglement wedge of Hawking radiation coming from an AdS black hole, will include an island inside the black hole interior after the Page time. In this paper, we propose a concrete way to extract the information from the island by acting only on the radiation degrees of freedom, building on the equivalence between the boundary and bulk modular flow. We consider examples with black holes in JT gravity coupled to baths. In the case that the bulk conformal fields contain free massless fermion field, we provide explicit bulk picture of the information extraction process, where we find that one can almost pull out an operator from the island to the bath with modular flow.

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Cited by 2 Pith papers

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

  1. Probing Evaporating Black Holes with Modular Flow in SYK

    hep-th 2025-12 unverdicted novelty 7.0

    Modular flow in SYK models coupled to a bath reveals singularities allowing reconstruction of bulk flow past the horizon in two-sided AdS2 black holes.

  2. The mini-Page Curve in Cosmology

    hep-th 2026-07 conditional novelty 6.5

    In 2D centaur geometries the entropy difference of a modular-conjugate Hawking-pair probe traces an inverse mini-Page curve that bottoms at τ≈β/8, marking when information begins to leave the cosmological horizon.