2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/163125We investigate the conformations of a semiflexible polymer confined to a square box. Results of Monte Carlo simulations show the existence of a shape transition when the persistence length of the polymer becomes comparable to the dimensions of box. An order parameter is introduced to quantify this behavior. A simple mean-field model is constructed to study the effect of the shape transition on the effective persistence length of the polymer.8 pages, 20 figuresSoft Condensed MatterAstrophysicsBiological Physicstext