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dc.contributor.authorLacasta Palacio, Ana María
dc.contributor.authorSancho, Jose Maria
dc.contributor.authorSokolov, Igor M.
dc.contributor.authorLindenberg, K.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física Aplicada
dc.identifier.citationLacasta, A.M. et al. From subdiffusion to superdiffusion of particles on solid surfaces. "Physical Review E". vol. 70, núm. 5, p. 10
dc.description.abstractWe present a numerical and partially analytical study of classical particles obeying a Langevin equation that describes diffusion on a surface modeled by a two dimensional potential. The potential may be either periodic or random. Depending on the potential and the damping, we observe superdiffusion, large-step diffusion, diffusion, and subdiffusion. Superdiffusive behavior is associated with low damping and is in most cases transient, albeit often long. Subdiffusive behavior is associated with highly damped particles in random potentials. In some cases subdiffusive behavior persists over our entire simulation and may be characterized as metastable. In any case, we stress that this rich variety of behaviors emerges naturally from an ordinary Langevin equation for a system described by ordinary canonical Maxwell-Boltzmann statistics.
dc.format.extent12 p.
dc.publisherAmerican Physical Society
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes numèrics
dc.subject.lcshLangevin equations
dc.subject.lcshSurfaces (Physics)
dc.subject.lcshNonlinear systems
dc.subject.otherNonlinear dynamics
dc.subject.otherDiffusion on surfaces
dc.subject.otherRandom potentials
dc.titleFrom subdiffusion to superdiffusion of particles on solid surfaces
dc.subject.lemacSistemes no lineals
dc.subject.lemacSuperfícies (Física)
dc.contributor.groupUniversitat Politècnica de Catalunya. NOLIN - Física No-Lineal i Sistemes Fora de l'Equilibri
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access

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