Classical and quantum double copy of back-reaction

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Publication:1995199

DOI10.1007/JHEP09(2020)200zbMATH Open1454.83028arXiv2005.05807OpenAlexW3106272582MaRDI QIDQ1995199

Author name not available (Why is that?)

Publication date: 18 February 2021

Published in: (Search for Journal in Brave)

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.


Full work available at URL: https://arxiv.org/abs/2005.05807



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