2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49007Inspired by recent lattice calculations, we model certain aspects of the $θ$-vacuum using a matrix model with gaussian weights. The vacuum energy exhibits a cusp at $θ<π$ that is sensitive to both the accuracy of the numerical analysis and the maximum density of winding modes present in a finite volume.3 pages with 2 EPS figures and World Scientific style file. Talk given by G. Papp at the Workshop "Understanding Deconfinement in QCD", ECT*, Trento, 1-13/March, 1999High Energy Physics - PhenomenologyHigh Energy Physics - LatticeHigh Energy Physics - Theorytext