In this paper, we study a CPT-even Lorentz-breaking extension of the scalar QED. For this theory, we calculate the one-loop lower-order contributions in the Lorentz-violating parameters to the two-point functions of scalar and gauge fields. We found that the two background tensors, coming from the two sectors (scalar and gauge) are mixed in the one-loop corrections both in finite and divergent parts. This shows that these two Lorentz-breaking terms cannot be studied in an isolated form. Besides, the results in the gauge sector are confirmed to be transversal.
@article{arxiv.2111.14257,
title = {One-loop calculations in CPT-even Lorentz-breaking scalar QED},
author = {A. P. Baêta Scarpelli and J. C. C. Felipe and L. C. T. Brito and A. Yu. Petrov},
journal= {arXiv preprint arXiv:2111.14257},
year = {2022}
}
Comments
13 pages, 2 figures, accepted to Mod. Phys. Lett. A