Influence of extended dynamics on phase transitions in a driven lattice gas

Details Influence of extended dynamics on phase transitions in a driven lattice gas Influence of extended dynamics on phase transitions in a driven lattice gas

2001-12-04

arxiv.org/abs/cond-mat/0112046v1

Phys. Rev. E, 65 (2002) 047101

Physics

Condensed Matter

Statistical Mechanics

3 pages, 3 figures

Scientific paper

10.1103/PhysRevE.65.047101

Monte Carlo simulations and dynamical mean-field approximations are performed to study the phase transition in a driven lattice gas with nearest-neighbor exclusion on a square lattice. A slight extension of the microscopic dynamics with allowing the next-nearest-neighbor hops results in dramatic changes. Instead of the phase separation into high- and low-density regions in the stationary state the system exhibits a continuous transition belonging to the Ising universality class for any driving. The relevant features of phase diagram are reproduced by an improved mean-field analysis.

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