title: Broken space-time symmetries and mechanisms of rectification of ac fields by nonlinear (non)adiabatic response.
abstract: We consider low-dimensional dynamical systems exposed to a heat bath and to additional ac fields. The presence of these ac fields may lead to a breaking of certain spatial or temporal symmetries, which in turn cause nonzero averages of relevant observables. Nonlinear (non)adiabatic response is employed to explain the effect. We consider a case of a particle in a periodic potential as an example and discuss the relevant symmetry breakings and the mechanisms of rectification of the current in such a system.
authors.affiliation: Department of Chemistry, Tel-Aviv Unversity, Tel-Aviv 69978, Israel.
authors.forename: S
authors.initials: S
authors.lastname: Denisov
authors.forename: S
authors.initials: S
authors.lastname: Flach
authors.forename: A A
authors.initials: AA
authors.lastname: Ovchinnikov
authors.forename: O
authors.initials: O
authors.lastname: Yevtushenko
authors.forename: Y
authors.initials: Y
authors.lastname: Zolotaryuk