Abstract
We consider radiation emitted by colour-charged and massive particles crossing strong plane wave backgrounds in gauge theory and gravity. These backgrounds are treated exactly and non-perturbatively throughout. We compute the back-reaction on these fields from the radiation emitted by the probe particles: classically through background-coupled worldline theories, and at tree-level in the quantum theory through three-point amplitudes. Consistency of these two methods is established explicitly. We show that the gauge theory and gravity amplitudes are related by the double copy for amplitudes on plane wave backgrounds. Finally, we demonstrate that in four-dimensions these calculations can be carried out with a background-dressed version of the massive spinor-helicity formalism.
DOI
10.1007/jhep09(2020)200
Publication Date
2020-09-30
Publication Title
The Journal of High Energy Physics
Volume
2020
Issue
9
Publisher
Springer Verlag (Germany)
ISSN
1029-8479
Embargo Period
2024-11-22
Recommended Citation
Adamo, T., & Ilderton, A. (2020) 'Classical and quantum double copy of back-reaction', The Journal of High Energy Physics, 2020(9). Springer Verlag (Germany): Available at: https://doi.org/10.1007/jhep09(2020)200
