2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/131431This paper has been withdrawn by the author. Instead, more comprehensive and accurate works are placed in: 1) cond-mat/0610767: Universality in nonadiabatic behaviour of classical actions in nonlinear models with separatrix crossings, to appear in Phys.Rev.E; and 2) nlin/0611007: Change in the adiabatic invariant in a nonlinear two-mode model of Feshbach resonance passage, to appear in Physica DThis paper has been withdrawnChaotic DynamicsQuantum Physicstext