Possible Existence of an Extraordinary Phase in the Driven Lattice Gas

Abstract

We report recent simulation results which might indicate the existence of a new low-temperature "phase" in an Ising lattice gas, driven into a non-equilibrium steady state by an external field. It appears that this "phase", characterized by multiple-strip configurations, is selected when square systems are used to approach the thermodynamic limit. We propose a quantitative criterion for the existence of such a "phase". If confirmed, its observation may resolve a long-standing controversy over the critical properties of the driven Ising lattice gas.

10 pages; 4 figures

References in corpus (3)

• Driven Diffusive Systems: An Introduction and Recent Developments
• Phase Transitions in a Driven Lattice Gas with Anisotropic Interactions
• Shape-Dependent Thermodynamics and Non-Local Hydrodynamics in a Non-Gibbsian Steady-State of a Drift-Diffusion System

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• Probability currents as principal characteristics in the statistical mechanics of non-equilibrium steady states
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• Ordering dynamics of the driven lattice gas model
• Phase Diagram for a 2-D Two-Temperature Diffusive XY Model
• Influence of extended dynamics on phase transitions in a driven lattice gas
• Coarsening of a Class of Driven Striped Structures
• Perpendicular and Parallel Phase Separation in Two Species Driven Diffusive Lattice Gases