2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/231188We perform simulations of an effective theory of SU(2) Wilson lines in three dimensions. Our action includes a kinetic term, the one-loop perturbative potential for the Wilson line, a non-perturbative "fuzzy-bag" contribution and spatial gauge fields. We determine the phase diagram of the theory and confirm that, at moderately weak coupling, the non-perturbative term leads to eigenvalue repulsion in a finite region above the deconfining phase transition.To appear in the proceedings of "Strong and Electroweak Matter", Amsterdam, the Netherlands, August 26-29, Nucl. Phys. A, in printHigh Energy Physics - LatticeHigh Energy Physics - Phenomenologytext