Finite-Size Scaling in a Two-Temperature Lattice Gas: A Monte Carlo Study of Critical Properties

We present computer studies of the critical properties of an Ising lattice gas driven to a non-equilibrium steady state by coupling to two temperature baths. Anisotropic scaling, a dominant feature near criticality, is used as a tool to extract the values of the critical temperature and some exponents for the specific case where one of the baths has infinite T . Our results are consistent with those from an ε-expansion, carried out recently to O (ε 2 ).