On the string-inspired approach to QED in external field
R. Shaisultanov
TL;DR
This paper extends the string-inspired Bern-Kosower formalism to compute one-loop QED processes in constant external fields, providing compact expressions for scalar QED and discussing spinor QED extensions.
Contribution
It introduces a string-inspired approach to calculate QED processes in external fields, offering a new compact formalism for scalar QED and insights into spinor QED.
Findings
Derived a compact expression for scalar QED in external fields.
Extended the formalism to include spinor QED.
Provided a framework for calculating QED processes with multiple external photons.
Abstract
Strassler's formulation of the string-derived Bern-Kosower formalism is extended to consider QED processes in homogeneous constant external field. A compact expression for the contribution of the one-loop with arbitrary number of external photon lines is given for scalar QED. Extension to spinor QED is shortly discussed.
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