2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/214440We will investigate two models which exhibit SSB in the canonical approach: the N=1 and N=2 linear sigma model. In both models the Green's functions and the effective potential will be computed in the path-integral approach. We will demonstrate how we get different results than in the canonical approach.PhD-thesisHigh Energy Physics - Phenomenologytext