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The worldline approach to helicity flip in plane waves

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arxiv 1601.05021 v1 pith:KCDNNIF7 submitted 2016-01-19 hep-th hep-ph

classification hep-thhep-ph
keywords worldlineeffectsmethodsplanepolarisationvacuumapplyapproach
verification ladder T0 review T1 audit T2 compute T3 formal
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We apply worldline methods to the study of vacuum polarisation effects in plane wave backgrounds, in both scalar and spinor QED. We calculate helicity-flip probabilities to one loop order and treated exactly in the background field, and provide a toolkit of methods for use in investigations of higher-order processes. We also discuss the connections between the worldline, S-matrix, and lightfront approaches to vacuum polarisation effects.

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  1. Worldline representation of multiloop amplitudes in quantum electrodynamics

    hep-th 2026-07 conditional novelty 5.0 of 10

    Worldline master integrals combine whole classes of QED Feynman diagrams and yield new coefficients for the two-loop scalar QED vacuum polarization.

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