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arXiv · hep-th/0105037

Causality and radiatively induced CPT violation

C. Adam·F. R. Klinkhamer
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Abstract

We consider quantum electrodynamics with an additional Lorentz- and CPT-violating axial-vector term in the fermionic sector and discuss the possibility that radiative corrections induce a Lorentz- and CPT-violating Chern-Simons-like term for the gauge field. From the requirement of causality and the assumed validity of perturbation theory, we conclude that the induced Chern-Simons-like term must be absent in the full quantum field theory.

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C. Adam, F. R. Klinkhamer. 2001-05-31. Causality and radiatively induced CPT violation. https://doi.org/10.1016/s0370-2693(01)00678-5

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