2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52947We show that the complete planar one-loop mixing matrix of the N=2 Super Yang--Mills theory can be obtained from a reduction of that of the N=4 theory. For composite operators of scalar fields, this yields an anisotropic XXZ spin chain, whose spectrum of excitations displays a mass gap.8 pages, contributed to the proceedings of the Cargese 2004 ASI, SISSA preprint 99/2004/FMHigh Energy Physics - Theorytext