2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/226573We compare two Landau gauge fixing methods, aiming to find the global maximum of the gauge fixing functional. Moreover, a systematic effect of Gribov copies in the gluon and ghost propagators computed in Landau gauge is presented and discussed.7 pages, 3 figures, poster presented at Lattice 2007 (Vacuum structure and confinement)High Energy Physics - Latticetext