2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/126740We study kinetics of electrons, scattered by heavy particles undergoing slow diffusive motion. In a three-dimensional space we claim the existence of the crossover region (on the energy axis), which separates the states with fast diffusion and the states with slow diffusion; the latter is determined by the dephasing time. In a two-dimensional space the diffusion coefficient for any value of energy is determined by the dephasing time.4 pages, 1 eps figure, latexDisordered Systems and Neural Networkstext