2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/109283Nonlinear quantum mechanics at the Planck scale can produce nonlocal effects contributing to resolution of singularities, to cosmic acceleration, and modified black-hole dynamics, while avoiding the usual causality issues.Resumed version of a talk given at the XXIV Workshop On Geometric Methods In Physics, 2005, Bialowieza, PolandQuantum Physicstext