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Radiation and Reaction at One Loop

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arxiv 2303.06211 v2 pith:PPJAXA32 submitted 2023-03-10 hep-th gr-qc

Asaad Elkhidir , Donal O'Connell , Matteo Sergola , Ingrid A. Vazquez-Holm This is my paper
classification hep-thgr-qc
keywords radiationamplitudesreactionclassicaldirectlyfieldfieldsimaginary
verification ladder T0 review T1 audit T2 compute T3 formal
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We study classical radiation fields at next-to-leading order using the methods of scattering amplitudes. The fields of interest to us are sourced when two massive, point-like objects scatter inelastically, and can be computed from one-loop amplitudes. We show that the real and imaginary parts of the amplitudes both play important but physically distinct roles in the radiation field. The amplitude's imaginary part directly computes the portion of radiation emitted under the influence of a body's self-field, i.e., through radiation reaction. This aspect of radiation reaction is directly linked to one-loop Compton amplitudes in electrodynamics, Yang-Mills theory and gravity. We also discuss the fascinating interplay between renormalisation, radiation reaction and classical field theory from this perspective.

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Cited by 3 Pith papers

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