title: Diffusion through piecewise washboard potential.
abstract: We consider the influence of small periodic oscillations of barriers on the stationary motion of a particle through a piecewise washboard potential. Up to the second order in the amplitude of oscillation the corrections to the flux can be both positive and negative and, for equal widths of the well and barrier, they do not depend on the frequency of the oscillations.
authors.affiliation: Department of Physics, Bar-Ilan University, Ramat-Gan 52900, Israel.
authors.forename: V
authors.initials: V
authors.lastname: Berdichevsky
authors.forename: M
authors.initials: M
authors.lastname: Gitterman