Nonequilibrium wetting transitions with short range forces

Details Nonequilibrium wetting transitions with short range forces Nonequilibrium wetting transitions with short range forces

2003-01-09

arxiv.org/abs/cond-mat/0301130v1

Physics

Condensed Matter

Statistical Mechanics

11 pages, 5 figures. To appear in Physical Review E

Scientific paper

10.1103/PhysRevE.67.021607

We analyze within mean-field theory as well as numerically a KPZ equation that describes nonequilibrium wetting. Both complete and critical wettitng transitions were found and characterized in detail. For one-dimensional substrates the critical wetting temperature is depressed by fluctuations. In addition, we have investigated a region in the space of parameters (temperature and chemical potential) where the wet and nonwet phases coexist. Finite-size scaling analysis of the interfacial detaching times indicates that the finite coexistence region survives in the thermodynamic limit. Within this region we have observed (stable or very long-lived) structures related to spatio-temporal intermittency in other systems. In the interfacial representation these structures exhibit perfect triangular (pyramidal) patterns in one (two dimensions), that are characterized by their slope and size distribution.

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