Nonequilibrium phase transitions in stochastic lattice systems: influence of the hopping rates
Two-dimensional lattice-gas models with attractive interactions and particleconserving hopping dynamics under the influence of a very large external electric field ..-->..E along a principal axis are studied in the case of different ratios T between the jump rates in the field direction and perpendicular to it using different transition probabilities. We investigate the dependence of the nonequilibrium steady-state properties on the transition mechanism. We find selfsimiliarity with respect to (T,T) and a coexistence curve critical exponent which, for small T, seems independent of T. There is some evidence that this exponent might be halfway between the equilibrium mean field and Onsager's values. A crossover toward mean-field behavior for large T seems also identified.
- Research Organization:
- Univ. de Barcelona, Barcelona
- OSTI ID:
- 6909770
- Journal Information:
- J. Stat. Phys.; (United States), Vol. 43:3/4
- Country of Publication:
- United States
- Language:
- English
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