Pradas Gené, MarcLópez Martín, Juan ManuelHernández Machado, Aurora2011-07-072011-07-0720071063-651Xhttps://hdl.handle.net/2445/18743We show that time-dependent couplings may lead to nontrivial scaling properties of the surface fluctuations of the asymptotic regime in nonequilibrium kinetic roughening models. Three typical situations are studied. In the case of a crossover between two different rough regimes, the time-dependent coupling may result in anomalous scaling for scales above the crossover length. In a different setting, for a crossover from a rough to either a flat or damping regime, the time-dependent crossover length may conspire to produce a rough surface, although the most relevant term tends to flatten the surface. In addition, our analysis sheds light into an existing debate in the problem of spontaneous imbibition, where time-dependent couplings naturally arise in theoretical models and experiments.4 p.application/pdfeng(c) The American Physical Society, 2007Termodinàmica del desequilibriFísica estadísticaTransformacions de fase (Física estadística)Equacions d'estatNonequilibrium thermodynamicsStatistical physicsPhase transformations (Statistical physics)Equations of stateinfo:eu-repo/semantics/article561763info:eu-repo/semantics/openAccess