2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/100588The exact solution of the 1D interacting mixed Bose-Fermi gas is used to calculate ground-state properties both for finite systems and in the thermodynamic limit. The quasimomentum distribution, ground-state energy and generalized velocities are obtained as functions of the interaction strength both for polarized and non-polarized fermions. We do not observe any demixing instability of the system for repulsive interactions.12 pages, 4 figures, better comparison with hydrodynamic approach, typos corrected, references added, improved figuresStatistical MechanicsStrongly Correlated Electronstext