Infra-red divergences in plane wave backgrounds
classification
✦ hep-ph
hep-th
keywords
divergencesinfra-redplanesoftwaveattentionbackgroundscase
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We show that the emission of soft photons via nonlinear Compton scattering in a pulsed plane wave (laser field) is in general infra-red divergent. We give examples of both soft and soft-collinear divergences, and we pay particular attention to the case of crossed fields in both classical and quantum theories.
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