Disorder-induced Fickian, yet non-Gaussian diffusion in heterogeneous media
Indrani Chakraborty, Yael Roichman
Abstract
This paper shows how disorder in the arrangement of obstacles induces Fickian yet non-Gaussian diffusion of tracer particles. The authors show that superstatistical behavior, arising from spatial heterogeneity, leads to non-Gaussianity via two coupled physical mechanisms.
Topics & Concepts
DiffusionFick's laws of diffusionConstant (computer programming)PhysicsStatistical physicsMaterials scienceTRACERAnomalous diffusionMeasure (data warehouse)Computer scienceMaterial Dynamics and PropertiesTheoretical and Computational PhysicsFractional Differential Equations Solutions