2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/198345We determine the topological susceptibility $χ$ at T=0 in pure SU(3) gauge theory and its behaviour at finite $T$ across the deconfining transition. We use an improved topological charge density operator. $χ$ drops sharply by one order of magnitude at the deconfining temperature $T_c$.Recently appeared erratum added as an "Appendix" to the original paperHigh Energy Physics - LatticeHigh Energy Physics - PhenomenologyHigh Energy Physics - TheoryTopological susceptibility at zero and finite $T$ in SU(3) Yang-Mills theorytext