2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/103231The surface-atom Casimir-Polder-Lifshitz force out of thermal equilibrium is investigated in the framework of macroscopic electrodynamics. Particular attention is devoted to its large distance limit that shows a new, stronger behaviour with respect to the equilibrium case. The frequency shift produced by the surface-atom force on the the center-of-mass oscillations of a harmonically trapped Bose-Einstein condensate and on the Bloch oscillations of an ultra-cold fermionic gas in an optical lattice are discussed for configurations out of thermal equilibrium.Submitted to JPA Special Issue QFEXT'05Statistical MechanicsSoft Condensed MatterAtomic PhysicsQuantum Physicstext