2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/24785We note the similarity between BEC (Bose-Einstein Condensates) formed of atoms between which we have long-range attraction (and shorter-range repulsions) and the field theoretic "Q balls". This allows us in particular to address the stability of various putative particle physics Q balls made of non-relativistic bosons using variational methods of many-body physics.Other Condensed MatterHigh Energy Physics - Theorytext