2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89424In the recent physics literature there have appeared contradictory statements concerning the behaviour of scattering solutions of the 3-dimensional Schroedinger equation at large times. We clarify the situation and point out that the issue was rigorously resolved in the mathematics literature.2 pagesQuantum Physicstext