2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/180651Using the renormalization group approach, the Coulomb gas and the coset techniques, the effect of slightly relevant perturbations is studied for the second parafermionic field theory with the symmetry $Z_{N}$, for N odd. New fixed points are found and classified.High Energy Physics - TheoryStatistical Mechanicstext