2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/21106We generalize the Kohn's theorem to the case of parabolic three-dimensional quantum dots in magnetic fields of arbitrary direction. We show numerically that the exact resonance frequencies in the magneto-optical absorption of these dots are reproduced by the adiabatic time-dependent local spin density approximation theory (TDLSDA). We use TDLSDA to predict spin density excitations in the dots.tex file + 5 figures (submitted to Phys. Rev. B)Condensed Mattertext