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arXiv · hep-th/0212007

On the effective lagrangian in spinor electrodynamics with added violation of Lorentz and CPT symmetries

Yu. A. Sitenko·K. Yu. Rulik
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Abstract

We consider quantum electrodynamics with additional coupling of spinor fields to the space-time independent axial vector violating both Lorentz and CPT symmetries. The Fock-Schwinger proper time method is used to calculate the one-loop effective action up to the second order in the axial vector and to all orders in the space-time independent electromagnetic field strength. We find that the Chern-Simons term is not radiatively induced and that the effective action is CPT invariant in the given approximation.

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Yu. A. Sitenko, K. Yu. Rulik. 2002-12-19. On the effective lagrangian in spinor electrodynamics with added violation of Lorentz and CPT symmetries. https://doi.org/10.1140/epjc%2Fs2003-01167-7

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