paper

Lorentz and CPT violation in QED revisited: A missing analysis

arXiv:0912.4392 · doi:10.1016/j.physletb.2010.03.081

Abstract

We investigate the breakdown of Lorentz symmetry in QED by a CPT violating interaction term consisting of the coupling of an axial fermion current with a constant vector field , in the framework of algebraic renormalization -- a regularization-independent method. We show, to all orders in perturbation theory, that a CPT-odd and Lorentz violating Chern-Simons-like term, definitively, is not radiatively induced by the axial coupling of the fermions with the constant vector .

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