title: Paradoxical motion of a single Brownian particle: absolute negative mobility.
abstract: We consider a single, classical Brownian particle in a spatially symmetric periodic system far from thermal equilibrium, which can be readily realized experimentally. Upon application of an external static force F, the average particle velocity is negative for F>0 and positive for F<0 (absolute negative mobility). The various physical mechanisms responsible for such a paradoxical effect are identified, leading to analytical approximations that are in good agreement with numerical simulations.
authors.affiliation: Fakulät für Physik, Universität Bielefeld, Germany.
authors.forename: Ralf
authors.initials: R
authors.lastname: Eichhorn
authors.forename: Peter
authors.initials: P
authors.lastname: Reimann
authors.forename: Peter
authors.initials: P
authors.lastname: Hänggi