title: From multiplicative noise to directed percolation in wetting transitions.
abstract: 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.
authors.affiliation: Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, I-50125 Florence, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Ginelli
authors.forename: V
authors.initials: V
authors.lastname: Ahlers
authors.forename: R
authors.initials: R
authors.lastname: Livi
authors.forename: D
authors.initials: D
authors.lastname: Mukamel
authors.forename: A
authors.initials: A
authors.lastname: Pikovsky
authors.forename: A
authors.initials: A
authors.lastname: Politi
authors.forename: A
authors.initials: A
authors.lastname: Torcini