2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89117Motivated by a number of recent experiments, we discuss in this paper a speculative but physically admissible form and solutions of effective Maxwell-like equations describing propagation of electromagnetic field in a medium which ``feels'' a quantum preferred frame.4 pages, REVTeX 3.1, one sentence modified, references updatedQuantum PhysicsOpticstext