2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/99607We study a dilute gas with two species of Fermionic atoms of unequal concentrations, interacting via a short-range interaction with one deeply bound state. We study the properties of this system under the mean-field approximation. We obtain the effective interaction among the fermions and bosons, and discuss the collective modes of the system.errors removed, reference not updatedSuperconductivitytext