A Monte Carlo study of subdiffusive displacements of interacting particles in a percolating system

Ras B. Pandey

Physica A: Statistical Mechanics and its Applications, 1992, vol. 191, issue 1, 438-441

Abstract: A computer-simulation model is introduced to study the transport properties of interacting particles of concentration p in a percolating system near the percolation threshold. A nearest neighbor interaction is considered among the particles and the accessible sites of the percolating substrate. The transport behviour is found to be concentration p and temperature (T) limited in a specific p-T regime. The subdiffusive behaviour at high temperatures seems consistent with the anomalous diffusion of a noninteracting lattice gas. The rms displacement seems consistent with the anomalous diffusion of a noninteracting lattice gas. The rms displacement of the particles (Rtr) exhibits ultra-slow power-law diffusion at low temperatures at a moderate concentration p. The rms displacement of the center of mass of the particles (Rcm) on the other hand shows a diffusion like power-law behaviour before it saturates in a certain temperature regime.

Date: 1992
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:191:y:1992:i:1:p:438-441

DOI: 10.1016/0378-4371(92)90563-6

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