2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/25081We show that a Bose-Einstein condensate and a portion of its surrounding thermal cloud can exhibit mutual self-trapping, supported by the attractive particle interactions, and not by the external confinement. This type of dynamics is characteristic of composite random-phase solitons.5 pages, 3 figures, submitted to Phys. Rev. LettOther Condensed Mattertext