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arXiv · 2510.25852

Hawking radiation from the double copy

Anton Ilderton·William Lindved·Karthik Rajeev
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Abstract

Gravity and gauge theory are concretely linked by the double copy. Although well-studied at the level of perturbative scattering in vacuum, far less is known about non-perturbative aspects or extensions of the double copy beyond trivial backgrounds. We show here how Hawking radiation in a collapse metric, its associated thermal spectrum, and horizon-dependence, emerges from the double copy of particle production in a background gauge field, where there is no global horizon, nor a thermal spectrum. Our approach combines worldline and amplitudes methods, and allows the unification of several classical and quantum double copy prescriptions for black hole spacetimes.

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Anton Ilderton, William Lindved, Karthik Rajeev. 2025-10-29. Hawking radiation from the double copy. https://doi.org/10.1103/vnm5-jwwv

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