2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/41208I give a review on the self-tuning solution of the cosmological constant in a 5D RS-II model using a three index antisymmetric tensor field $A_{MNP}$. The three index antisymmetric tensor field can be the fundamental one appearing in 11D supergravity. Also, the dual of its field strength $H_{MNPQ}$, being a massless scalar, may be interpreted as a Goldstone boson of some spontaneously broken global symmetry.11 pages including 7 eps figures, talk presented at COSMO-01, Rovaniemi, Finland, Aug. 29 - Sep. 4, 2001. Typos correctedHigh Energy Physics - Phenomenologytext