Finite size effects in nonequilibrium wetting

Details Finite size effects in nonequilibrium wetting Finite size effects in nonequilibrium wetting

2010-09-30

arxiv.org/abs/1009.6128v2

J. Stat. Mech. (2011) P02036

Physics

Condensed Matter

Statistical Mechanics

14 pages, 6figures, major changes

Scientific paper

10.1088/1742-5468/2011/02/P02036

Models with a nonequilibrium wetting transition display a transition also in finite systems. This is different from nonequilibrium phase transitions into an absorbing state, where the stationary state is the absorbing one for any value of the control parameter in a finite system. In this paper, we study what kind of transition takes place in finite systems of nonequilibrium wetting models. By solving exactly a microscopic model with three and four sites and performing numerical simulations we show that the phase transition taking place in a finite system is characterized by the average interface height performing a random walk at criticality and does not discriminate between the bounded-KPZ classes and the bounded-EW class. We also study the finite size scaling of the bKPZ universality classes, showing that it presents peculiar features in comparison with other universality classes of nonequilibrium phase transitions.

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