# The entropy of bulk quantum fields and the entanglement wedge of an evaporating black hole

@article{Almheiri2019TheEO, title={The entropy of bulk quantum fields and the entanglement wedge of an evaporating black hole}, author={Ahmed Almheiri and Netta Engelhardt and Donald Marolf and Henry Maxfield}, journal={Journal of High Energy Physics}, year={2019} }

Abstract
Bulk quantum fields are often said to contribute to the generalized entropy
$$ \frac{A}{4{G}_N}+{S}_{\mathrm{bulk}} $$
A
4
G
N
+
S
bulk
only at O(1). Nonetheless, in the context of evaporating black holes, O(1/GN ) gradients in S
bulk can arise due to large boosts, introducing a quantum extremal surface far from any classical extremal surface. We examine the effect of such bulk quantum effects on quantum extremal surfaces (QESs) and the resulting…

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