Inequivalence of Dynamical Ensembles in a Generalised Driven Diffusive Lattice Gas

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We generalise the Driven Diffusive Lattice Gas (DDLG) model by using a combination of Kawasaki and Glauber dynamics. We find via Monte Carlo simulations and perturbation studies that the simplest possible generalisation of the equivalence of the canonical and grand-canonical ensembles, which holds in equilibrium, does not apply for this class of nonequilibrium systems.
Accepted and to appear in Phys. Rev. E(2000)

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