2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/183968We consider the implications of a violation of the equivalence principle or of Lorentz invariance in the neutrino sector for the T-asymmetry $ΔP_T \equiv P(ν_α \to ν_β) - P(ν_β \to ν_α)$ in a three-flavour framework. We find that additional mixing due to these mechanisms, while obeying all present bounds, can lead to a substantial enhancement, suppression, and/or sign change in $ΔP_T$ for the preferred energies and baselines of a neutrino factory. This in turn allows for the possibility of improving existing constraints by several orders of magnitude.2 pages; Talk given at the 4th NuFact '02 Workshop (Neutrino Factories Based On Muon Storage Rings), 1-6 Jul 2002, London, England; To appear in proceedingsHigh Energy Physics - Phenomenologytext