title: Current reversals in a rocking ratchet: dynamical versus symmetry-breaking mechanisms.
abstract: Directed transport in ratchets is determined by symmetry breaking in a system out of equilibrium. A hallmark of rocking ratchets is current reversals: an increase in the rocking force changes the direction of the current. In this work for a biharmonically driven spatially symmetric rocking ratchet we show that a class of current reversal is precisely determined by symmetry breaking, thus creating a link between dynamical and symmetry-breaking mechanisms.
authors.affiliation: Departamento de Física Aplicada I, EUP, Universidad de Sevilla, Calle Virgen de África 7, 41011 Sevilla, Spain.
authors.forename: D
authors.initials: D
authors.lastname: Cubero
authors.forename: V
authors.initials: V
authors.lastname: Lebedev
authors.forename: F
authors.initials: F
authors.lastname: Renzoni
mesh_terms: D008962:Models, Theoretical; D009038:Motion