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High-intensity scaling in UV-modified QED

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arxiv 2010.03893 v2 pith:MUUR3K43 submitted 2020-10-08 hep-ph

Robin Ekman , Tom Heinzl , Anton Ilderton This is my paper · ORCID
classification hep-ph
keywords fieldhigh-intensitytheorybehaviorintensityscalingadditionalbackground
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QED perturbation theory in a background field has been conjectured to break down for sufficiently high field intensity. The high-intensity behavior of a field theory is however intertwined with its high-energy (UV) behavior. Here we show that a UV modification of QED changes the high-intensity behaviour of observables. Specifically we study non-linear Compton scattering in a constant crossed field in QED with an additional Pauli term. In the UV modified theory the cross section exhibits a faster power-law scaling with intensity than in ordinary QED.

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