2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/191306The generalized Chaplygin gas provides an interesting candidate for the present accelerated expansion of the universe. We explore a geometrical explanation for the generalized Chaplygin gas within the context of brane world theories where matter fields are confined to the brane by means of the action of a confining potential. We obtain the modified Friedmann equations, deceleration parameter and age of the universe in this scenario and show that they are consistent with the present observational data.11 pages, 3 figures, to appear in PRDGeneral Relativity and Quantum Cosmologytext