2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/38678A model for the infrared sector of SU(2) Yang-Mills theory, based on magnetic vortex degrees of freedom represented by (closed) random world-surfaces, is presented. The model quantitatively describes both the confinement properties (including the finite-temperature transition to a deconfined phase) and the topological susceptibility of the Yang-Mills ensemble. A (quenched) study of the spectrum of the Dirac operator furthermore yields a behavior for the chiral condensate which is compatible with results obtained in lattice gauge theory.12 LaTeX pages, 8 ps figure files included via epsf, class crckbked.cls and style files called therein (Kluwer); to appear in: Proceedings of the NATO Advanced Research Workshop on Confinement, Topology, and other Non-Perturbative Aspects of QCD, Stara Lesna, Slovakia, 21.-27.1.2002High Energy Physics - LatticeHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext