Auxiliary fields in open gauge theories
arXiv:1309.0855 · doi:10.1103/PhysRevD.88.065002
Abstract
We show that for open gauge theories, it is possible to build an off-shell Becchi-Rouet-Stora-Tyutin (BRST) algebra together with an invariant extension of the classical action. This is based on the introduction of auxiliary fields, after having defined an on-shell invariant quantum action, where the gauge-fixing action is written as in Yang-Mills type theories up to a modified BRST operator. An application to simple supergravity is performed.
12 pages, no figures