On the reanimation of a local BRST invariance in the (Refined) Gribov-Zwanziger formalism

摘要

We localize a previously established nonlocal BRST invariance of theGribov-Zwanziger (GZ) action by the introduction of additional fields. Weobtain a modified GZ action with a corresponding local BRST invariance. We showthat correlation functions of the original elementary GZ fields do not changeupon evaluation with the modified partition function. We discuss that forvanishing Gribov mass, we are brought back to the original Yang-Mills theorywith standard BRST invariance.