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oai:recercat.cat:2445/187432025-12-05T17:02:00Zcom_2072_1057col_2072_478823col_2072_478917

Time-dependent couplings and crossover length scales in nonequilibrium surface roughening Pradas Gené, Marc López Martín, Juan Manuel Hernández Machado, Aurora Termodinàmica del desequilibri Física estadística Transformacions de fase (Física estadística) Equacions d'estat Nonequilibrium thermodynamics Statistical physics Phase transformations (Statistical physics) Equations of state We 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. 2011-07-07T12:51:46Z 2011-07-07T12:51:46Z 2007 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1063-651X https://hdl.handle.net/2445/18743 561763 eng Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.76.010102 Physical Review E, 2007, vol. 76, p. 010102-1(R)-010102-4 (R) http://dx.doi.org/10.1103/PhysRevE.76.010102 (c) The American Physical Society, 2007 info:eu-repo/semantics/openAccess 4 p. application/pdf The American Physical Society Articles publicats en revistes (Física Quàntica i Astrofísica)