2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/135477We explain the relationship between the classical description of an integrable system in terms of invariant tori and action-angle variables, and the quantum description in terms of the asymptotic Bethe ansatz.21 pages, 2 figuresOther Condensed MatterStatistical Mechanicstext