2012/01/14 by Mauro Cambiaso, Ralf Lehnert, Robertus Potting · 1 citation
Physics and Astronomy · #hep-th
paper · pdf · doi:10.1103/physrevd.85.085023
12 pages, 1 figure
arxiv created 2012/01/14 · arxiv updated 2015/06/03
All quadratic translation- and gauge-invariant photon operators for Lorentz breakdown are included into the Stueckelberg Lagrangian for massive photons in a generalized ξ-gauge. The corresponding dispersion relation and tree-level propagator are determined exactly, and some leading-order results are derived. The question of how to include such Lorentz-violating effects into a perturbative quantum-field expansion is addressed. Applications of these results within Lorentz-breaking quantum field theories include the regularization of infrared divergences as well as the free propagation of massive vector bosons.