Time delay for dispersive systems in quantum scattering theory. I. The Friedrichs model

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/158395We present a method for proving the existence of time delay (defined in terms of sojourn times) as well as its identity with Eisenbud-Wigner time delay in the case of the Friedrichs model. We show that this method applies to scattering by finite rank potentials.16 pagesMathematical Physics46N50; 81Q10; 35Q40Time delay for dispersive systems in quantum scattering theory. I. The Friedrichs modeltext