2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/223965The non-equilibrium zero bias anomaly (ZBA) in the tunneling density of states of a diffusive metallic film is studied. An effective action describing virtual fluctuations out-of-equilibrium is derived. The singular behavior of the equilibrium ZBA is smoothed out by real processes of inelastic scattering.4 pagesMesoscale and Nanoscale PhysicsStrongly Correlated Electronstext