Anomalous diffusion in viscosity landscapes

Autor:	Burgis, Markus, Schaller, Volker, Glässl, Martin, Kaiser, Benjamin, Köhler, Werner, Krekhov, Alexei, Zimmermann, Walter
Rok vydání:	2010
Předmět:	Condensed Matter - Statistical Mechanics
Druh dokumentu:	Working Paper
DOI:	10.1088/1367-2630/13/4/043031
Popis:	Anomalous diffusion is predicted for Brownian particles in inhomogeneous viscosity landscapes by means of scaling arguments, which are substantiated through numerical simulations. Analytical solutions of the related Fokker-Planck equation in limiting cases confirm our results. For an ensemble of particles starting at a spatial minimum (maximum) of the viscous damping we find subdiffusive (superdiffusive) motion. Superdiffusion occurs also for a monotonically varying viscosity profile. We suggest different substances for related experimental investigations. Comment: 15 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1010.3115 Zobrazit plný text záznamu View this record from Arxiv