2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/55822There is a natural way to study the long distance interactions of gauge theories in the electric (momentum) representation. Here, the main ideas are presented for the Abelian and Yang-Mills gauge theories emphasizing on the structure and the advantages of this approach.20 pages, REVTEX, no figures, talk presented at J. Stefan InstituteHigh Energy Physics - Theorytext