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Exact results for scattering on ultra-short plane wave backgrounds

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arxiv 1909.02484 v1 pith:GRE2CLLB submitted 2019-09-05 hep-ph hep-th

classification hep-phhep-th
keywords scatteringbackgroundsexactnonlinearplaneprobabilitiesresultsscaling
verification ladder T0 review T1 audit T2 compute T3 formal
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We give exact results for the emission spectra of both nonlinear Breit-Wheeler pair production and nonlinear Compton scattering in ultra-intense, ultra-short duration plane wave backgrounds, modelled as delta-function pulses. This includes closed form expressions for total scattering probabilities. We show explicitly that these probabilities do not exhibit the power-law scaling with intensity associated with the conjectured breakdown of (Furry picture) perturbation theory, instead scaling logarithmically in the high-intensity limit.

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