Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2004-07-23
Phys. Rev. E 71, 026121 (2005)
Physics
Condensed Matter
Statistical Mechanics
12 Figures. V Version resubmitted to Phys. Rev. E after referees report
Scientific paper
10.1103/PhysRevE.71.026121
It is argued that some phase--transitions observed in models of non-equilibrium wetting phenomena are related to contact processes with long-range interactions. This is investigated by introducing a model where the activation rate of a site at the edge of an inactive island of length $\ell$ is $1+a\ell^{-\sigma}$. Mean--field analysis and numerical simulations indicate that for $\sigma>1$ the transition is continuous and belongs to the universality class of directed percolation, while for $0<\sigma<1$, the transition becomes first order. This criterion is then applied to discuss critical properties of various models of non--equilibrium wetting.
Ginelli Francesco
Hinrichsen Haye
Livi Roberto
Mukamel David
Politi Alberto
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