2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/114237Mourre's commutator theory is a powerful tool to study the continuous spectrum of self-adjoint operators and to develop scattering theory. We propose a new approach of its main result, namely the derivation of the limiting absorption principle from a so called Mourre estimate. We provide a new interpretation of this result.Spectral TheoryMathematical Physics47A10, 81Q10 (primary), 47A40, 47B25 (secondary)text