DUAL SUPERCONDUCTOR SCENARIO OF CONFINEMENT - A SYSTEMATIC STUDY OF GRIBOV COPY EFFECTS

We perform a study of the effects from maximal Abelian gauge Gribov co pies in the context of the dual superconductor scenario of confinement , on the basis of a novel approach for the estimation of systematic un certainties from incomplete gauge fixing. We present numerical results , in SU(2) lattice gauge theory, using the overrelaxed simulated annea ling gauge-fixing algorithm. We find Abelian and non-Abelian string te nsions to differ significantly, their ratio being 0.92(4) at beta = 2. 5115. An approximate factorization of the Abelian potential into monop ole and photon contributions has been confirmed, the former giving ris e to the Abelian string tension.