2017-04-242017-04-241997Leyvraz, F., Frank Hoeflich, A., Lemus Casillas, R. y Andrés Martín, M.V. (1997). Accidental degeneracy in a simple quantum system: A new symmetry group for a particle in an impenetrable square-well potential. American Journal of Physics, 65 (11), 1087-1094.0002-9505http://hdl.handle.net/11441/58347The two-dimensional square-well potential is one of the simplest quantum-mechanical systems that exhibits accidental degeneracy. We show that the double degeneracy present is a consequence of a dynamical symmetry and derive a new symmetry group associated with the systemapplication/pdfengAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess