Two-point Correlations and Critical Line of the Driven Ising Lattice Gas in a High Temperature Expansion
Abstract
Description
Based on a high temperature expansion, we compute the two-point correlation function and the critical line of an Ising lattice gas driven into a non-equilibrium steady state by a uniform bias E. The lowest nontrivial order already reproduces the key features, i.e., the discontinuity singularity of the structure factor and the (qualitative) E-dependence of the critical line. Our approach is easily generalized to other non-equilibrium lattice models and provides a simple analytic tool for the study of the high temperature phase and its boundaries.
17 pages, no figures. Some typos corrected. To appear in J. Stat. Phys. (May 1998)
17 pages, no figures. Some typos corrected. To appear in J. Stat. Phys. (May 1998)