DECONFINEMENT IN (2 + 1)-DIMENSIONAL NON-ABELIAN GAUGE-THEORIES WITH FUNDAMENTAL FERMIONS

Non-Abelian gauge theories with fundamental fermions are analyzed using dual Lagrangian approach. It is found that in certain range of parameters the baryon number symmetry is spontaneously broken and one of the gauge bosons is identified as the corresponding Goldstone boson. It therefore remains massless beyond perturbation theory. All the other gauge bosons acquire a mass due to one-loop and monopole effects. Correspondingly, unlike in theories with bosonic matter only, one type of charged particles is not linearly confined.