2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51818It is shown that a sufficient condition for color confinement is given by Z_3^{-1}=0, where Z_3 denotes the renormalization constant of the color gauge field.7 pages, talk given at the International workshop "Strong Coupling Gauge Theories and Effective Field Theories", December 2002, Nagoya, JapanHigh Energy Physics - Theorytext