2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/82607The presence of chaos and quantum chaos is shown in two different nuclear systems. We analyze the chaotic behaviour of the classical SU(2) Yang--Mills--Higgs system, and then we study quantum chaos in the nuclear shell model calculating the spectral statistics of $A=46$--$50$ atomic nuclei.8 pages, LaTex, presented at 6th workshop "Perspectives on Theoretical Nuclear Physics", Cortona (Italy), 12--14 October 1995Nuclear Theorytext