2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/112582The Landau Hamiltonian governing the behavior of a quantum particle in dimension 2 in a constant magnetic field is perturbed by a compactly supported magnetic field and a similar electric field. We describe how the spectral subspaces change and how the Landau levels split under this perturbation.36 pagesMathematical PhysicsSpectral Theory47F05, 35P15, 81Q15text