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Breakdown of Field Theory in Near-Horizon Regions

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arxiv 2401.03572 v3 pith:VWK7XR6L submitted 2024-01-07 hep-th gr-qc

classification hep-thgr-qc
keywords back-reactionbreakdownfieldtheorybelowblackcharacteristicconsiderations
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We discuss back-reaction in the semiclassical treatment of quantum fields near a black hole. When the state deviates significantly from Hartle-Hawking, simple energetic considerations of back-reaction give rise to a characteristic radial distance scale $\sim (r_s^{2}G_N)^{1/D}$, below which some breakdown of effective field theory may occur.

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