2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52074In a field-theoretical context, we consider the Euclidean $(ϕ^4+ϕ^6)_D$ model compactified in one of the spatial dimensions. We are able to determine the dependence of the transition temperature ($T_{c}$)for a system described by this model, confined between two parallel planes, as a function of the distance($L$) separating them. We show that $T_{c}$ is a concave function of $L^{-1}$. We determine a minimal separation below which the transition is suppressed.4 pages, 3 figuresHigh Energy Physics - Theorytext