Consistent couplings between a set of vector fields and a system of matter fields are analysed in the framework of Lagrangian BRST cohomology.
Cite
@article{arxiv.hep-th/0201073,
title = {Lagrangian cohomological couplings among vector fields and matter fields},
author = {C. Bizdadea and E. M. Cioroianu and M. T. Miauta and I. Negru and S. O. Saliu},
journal= {arXiv preprint arXiv:hep-th/0201073},
year = {2017}
}