Unitarity, ghosts and nonminimal terms in Lorentz violating QED
High Energy Physics - Theory
2017-08-23 v1 High Energy Physics - Phenomenology
Abstract
The unitarity of a Lorentz-invariance violating QED model with higher-order Myers and Pospelov photons coupled to standard fermions is studied. As expected, we find ghost states associated to the higher-order terms that may lead to the loss of unitarity. An explicit calculation to check perturbative unitarity in the process of electron-positron scattering is performed and it is found to be possible to be preserved.
Cite
@article{arxiv.1307.5341,
title = {Unitarity, ghosts and nonminimal terms in Lorentz violating QED},
author = {Carlos M. Reyes},
journal= {arXiv preprint arXiv:1307.5341},
year = {2017}
}
Comments
Presented at the Sixth Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, June 17-21, 2013