2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/55665If constituent quarks are to emerge from QCD they must have well defined colour and be energetically favoured. After reviewing the general properties of charges in gauge theories, a method for constructing charges is presented and applied to the infra-red structure of the theory and to the interquark potential. Both of these applications supply a physical interpretation of the structures found in the construction of charges. We will see that constituent structures arise in QCD.7 pages, LaTeX, to appear in the proceedings of the fourth Paris workshop on Quantum Chromodynamics (June 1998)High Energy Physics - TheoryHigh Energy Physics - Phenomenologytext