2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/56070We extend superspace by introducing an antisymmetric tensorial coordinate. The resulting theory presents a supersymmetry with central charge. After integrating over the tensorial coordinate, an effective action describing massive bosons and fermions is explicitely derived for the spacetime dimension D=2. The adopted procedure is simpler than the Kaluza-Klein one and can suggest an alternative for string compactifications.8 pages, LatexHigh Energy Physics - Theorytext