Lorentz-violating photons with a mass term

TL;DR

This paper extends the Stueckelberg photon mass regularization method to the Lorentz- and CPT-violating Standard-Model Extension in quantum electrodynamics, addressing infrared divergence issues.

Contribution

It introduces a novel application of photon mass regularization within Lorentz- and CPT-violating QED frameworks, expanding the method's scope.

Findings

Extended Stueckelberg method to Lorentz-violating QED

Provides a new regularization approach for infrared divergences

Facilitates calculations in Lorentz-violating quantum field theories

Abstract

Perturbative calculations in quantum field theory often require the regularization of infrared divergences. In quantum electrodynamics, such a regularization can for example be accomplished by a photon mass introduced via the Stueckelberg method. The present work extends this method to the QED limit of the Lorentz- and CPT-violating Standard-Model Extension.