2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/218161We review some results concerning the semi-classical limit for the nonlinear Schrodinger equation, with or without an external potential. We consider initial data which are either of the WKB type, or very concentrated as the semi-classical parameter goes to zero. We sketch the techniques used according to various frameworks, and point out some open problems.22 pagesAnalysis of PDEsMathematical Physics35A35, 35B05, 35B40, 35Q55, 81Q20text