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Driven diffusive systems: How steady states depend on dynamics
Physical Review E (2004)
  • D. P. Landau, University of Georgia
  • Wooseop Kwak, University of Georgia
  • Beate Schmittmann, Virginia Polytechnic Institute and State University

In contrast to equilibrium systems, nonequilibrium steady states depend explicitly on the underlying dynamics. Using Monte Carlo simulations with Metropolis, Glauber, and heat bath rates, we illustrate this expectation for an Ising lattice gas, driven far from equilibrium by an “electric” field. While heat bath and Glauber rates generate essentially identical data for structure factors and two-point correlations, Metropolis rates give noticeably weaker correlations, as if the “effective” temperature were higher in the latter case. We also measure energy histograms and define a simple ratio which is exactly known and closely related to the Boltzmann factor for the equilibrium case. For the driven system, the ratio probes a thermodynamic derivative which is found to be dependent on dynamics.

Publication Date
June 18, 2004
Publisher Statement
Copyright 2004 American Physical Society. Posted with permission.
Citation Information
D. P. Landau, Wooseop Kwak and Beate Schmittmann. "Driven diffusive systems: How steady states depend on dynamics" Physical Review E Vol. 69 (2004)
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