2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/28918Spinless fermions with Coulomb interaction in a square disordered lattice form a new state of the matter which is nor a Fermi glass, neither a Wigner crystal for intermediate Coulomb interaction. From a numerical study of small clusters, we find that this new state occurs between the two critical carrier densities where insulator-metal-insulator transitions of a hole gas have been observed in GaAs.revtex, 4 pages, 4 figuresCondensed Mattertext