2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/141208I define quantum loop models whose degrees of freedom are Ising spins on the square lattice as in the toric code, but where the excitations should have non-abelian statistics. The inner product is topological, allowing a direct implementation of the anyonic fusion matrix on the lattice. It also makes deconfined anyons possible for a variety of values of the weight per loop $d$ in the ground state. For d=\sqrt{2}, a gapped non-abelian topological phase can occur with only four-spin interactions.4 pages, 5 figuresStatistical MechanicsStrongly Correlated ElectronsQuantum Physicstext