Lattice Gauge Fixing, Gribov Copies and BRST Symmetry

Abstract

We show that a modification of the BRST lattice quantization allows to circumvent an old paradox, formulated by Neuberger, related to lattice Gribov copies and non-perturbative BRST invariance. In the continuum limit the usual BRST formulation is recovered.

Comments: 7 pages, LaTeX