Simulation study on characteristics of long-range interaction in randomly asymmetric exclusion process

doi:10.1088/1674-1056/24/4/040504

Abstract In this paper we investigate the dynamics of an asymmetric exclusion process on a one-dimensional lattice with long-range hopping and random update via Monte Carlo simulations theoretically. Particles in the model will firstly try to hop over successive unoccupied sites with a probability q, which is different from previous exclusion process models. The probability q may represent the random access of particles. Numerical simulations for stationary particle currents, density profiles, and phase diagrams are obtained. There are three possible stationary phases: the low density (LD) phase, high density (HD) phase, and maximal current (MC) in the system, respectively. Interestingly, bulk density in the LD phase tends to zero, while the MC phase is governed by α, β, and q. The HD phase is nearly the same as the normal TASEP, determined by exit rate β. Theoretical analysis is in good agreement with simulation results. The proposed model may provide a better understanding of random interaction dynamics in complex systems.

Keywords: exclusion process Monte Carlo simulation random update long-range hopping

Received: 24 August 2014
Revised: 18 November 2014
Accepted manuscript online:

PACS:	05.70.Ln	(Nonequilibrium and irreversible thermodynamics)
	02.50.Ey	(Stochastic processes)
	05.60.Cd	(Classical transport)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 41274109 and 11104022), the Fund for Sichuan Youth Science and Technology Innovation Research Team (Grant No. 2011JTD0013), and the Creative Team Program of Chengdu University of Technology.

Corresponding Authors: Liu Ming-Zhe
E-mail: liumz@cdut.edu.cn

Cite this article:

Zhao Shi-Bo (赵仕波), Liu Ming-Zhe (刘明哲), Yang Lan-Ying (杨兰英) Simulation study on characteristics of long-range interaction in randomly asymmetric exclusion process 2015 Chin. Phys. B 24 040504

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