2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/228932The effective dynamics of a slow classical system coupled to a fast chaotic environment is described by means of a Master equation. We show how this approach permits a very simple derivation of geometric magnetism.5 pages REVTeX, twocolumn, no figures; revised version with minor changes, to appear in Phys. Rev. EStatistical MechanicsChaotic Dynamicstext