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arXiv · 2608.18205

A generating functional for infrared-safe QED amplitudes

Martin Ammon·Konrad Brandts·Federico Capone·Jakob Hollweck
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Abstract

We construct a generating functional for infrared-finite scattering amplitudes in massive quantum electrodynamics (QED) by including Faddeev-Kulish dressings in a holomorphic coherent-state representation, in the spirit of the construction of Aref'eva-Faddeev-Slavnov (AFS) for the undressed Dyson S-matrix. At tree level, the dressed generating functional reduces to an AFS path integral with dressed boundary conditions.

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Martin Ammon, Konrad Brandts, Federico Capone, Jakob Hollweck. 2026-08-18. A generating functional for infrared-safe QED amplitudes. https://arxiv.org/abs/2608.18205

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