2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/29226We study the effects of a repulsive three-body interaction on a system of trapped ultra-cold atoms in a Bose-Einstein condensed state. The corresponding $s-$wave non-linear Schrödinger equation is solved numerically and also by a variational approach. A first-order liquid-gas phase transition is observed for the condensed state up to a critical strength of the effective three-body force.4 pages, 3 figuresSoft Condensed Mattertext