From multiplicative noise to directed percolation in wetting transitions.
A simple one-dimensional microscopic model of the depinning transition of an interface from an attractive hard wall is introduced and investigated. Upon varying a control parameter, the critical behavior observed along the transition line changes from a directed-percolation type to a multiplicative-noise type. Numerical simulations allow for a quantitative study of the multicritical point separating the two regions. Mean-field arguments and the mapping on yet a simpler model provide some further insight on the overall scenario.
Ginelli
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F
Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, I-50125 Florence, Italy.
Ahlers
V
V
Livi
R
R
Mukamel
D
D
Pikovsky
A
A
Politi
A
A
Torcini
A
A