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arXiv · 2105.13759

Residual gauge-invariance in a massive Lorentz-violating extension of QED

B. Alves Marques·A. P. Baêta Scarpelli·J. C. C. Felipe·L. C. T. Brito
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Abstract

We reassess an alternative CPT-odd electrodynamics obtained from a Palatini-like procedure. Starting from a more general situation, we analyze the physical consistency of the model for different values of the parameter introduced in the mass tensor. We show that there is a residual gauge-invariance in the model if the local transformation is taken to vary only in the direction of the Lorentz-breaking vector. This residual gauge-invariance can be extended to all models whose only source of gauge symmetry breaking is such a mass term.

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B. Alves Marques, A. P. Baêta Scarpelli, J. C. C. Felipe, L. C. T. Brito. 2021-05-28. Residual gauge-invariance in a massive Lorentz-violating extension of QED. https://doi.org/10.1155/2022%2F7396078

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