Worldline master formulas for the dressed electron propagator. Part 2. On-shell amplitudes

被引：0

作者：

N. Ahmadiniaz

V. M. Banda Guzmán

F. Bastianelli

O. Corradini

J. P. Edwards

C. Schubert

机构：

[1] Helmholtz-Zentrum Dresden-Rossendorf,Instituto de Física y Matemáticas

[2] Universidad Michoacana de San Nicolás de Hidalgo,Dipartimento di Fisica e Astronomia “Augusto Righi”

[3] Università di Bologna,Dipartimento di Scienze Fisiche, Informatiche e Matematiche

[4] INFN,undefined

[5] Sezione di Bologna,undefined

[6] Università degli Studi di Modena e Reggio Emilia,undefined

来源：

Journal of High Energy Physics | / 2022卷

关键词：

Scattering Amplitudes; Gauge Symmetry;

D O I：

暂无

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学科分类号：

摘要：

In the first part of this series, we employed the second-order formalism and the “symbol” map to construct a particle path-integral representation of the electron propagator in a background electromagnetic field, suitable for open fermion-line calculations. Its main advantages are the avoidance of long products of Dirac matrices, and its ability to unify whole sets of Feynman diagrams related by permutation of photon legs along the fermion lines. We obtained a Bern-Kosower type master formula for the fermion propagator, dressed with N photons, in terms of the “N-photon kernel,” where this kernel appears also in “subleading” terms involving only N − 1 of the N photons.

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