# 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}
}
• Published 21 May 2019
• Physics
• Journal of High Energy Physics
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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