2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/198298We present a study of the topological susceptibility $χ$ on the lattice for full QCD with 2 and 4 flavours of staggered fermions at zero and finite temperature T. We find that $χ$ presents a sharp drop across the deconfinement transition. We also study the dependence of $χ$ on the quark mass at T=0: we have no conclusive evidence for the expected chiral behaviour.latex source, 8 pages, 4 figuresHigh Energy Physics - LatticeHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext