Title

Breakdown of Diffusive Motion in an Interacting Lattice Gas

Document Type

Article

Publication Date

8-15-1992

Department

Physics and Astronomy

Abstract

A Monte Carlo simulation is presented for the tracers' diffusion of an interacting lattice gas model as a function of temperature and concentration. The rms displacement shows a diffusive power-law behavior in the dilute regime, as in hard-core lattice gas. In three dimensions, the transport becomes anomalous at a higher concentration regime which depends on temperature. In two dimensions, the global transports cease to occur at intermediate concentrations leading to a trapping, and reappears as a metastable nondiffusive transport at higher concentrations.

Publication Title

Physica A: Statistical Mechanics and its Applications

Volume

187

Issue

1-2

First Page

77

Last Page

86