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Start Over Author "Da-Jiang Liu" Topic lattice gas Journal journal of statistical physics

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1. Crossover Between Mean-Field and Ising Critical Behavior in a Lattice-Gas Reaction-Diffusion Model.

Author

Da-Jiang Liu, Pavlenko, N., and Evans, J. W.

Subjects
*LATTICE gas, *CARBON monoxide, *DIFFUSION, *ISING model, *CRYSTAL lattices, *PHYSICS, *SOLUTION (Chemistry)
Abstract

Lattice-gas models for CO oxidation can exhibit a discontinuous nonequilibrium transition between reactive and inactive states, which disappears above a critical CO-desorption rate. Using finite-size-scaling analysis, we demonstrate a crossover from Ising to mean-field behavior at the critical point, with increasing surface mobility of adsorbed CO or with decreasing system size. This behavior is elucidated by analogy with that of equilibrium Ising-type systems with long-range interactions. [ABSTRACT FROM AUTHOR]

Published
2004
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