Broken space-time symmetries and mechanisms of rectification of ac fields by nonlinear (non)adiabatic response.
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.
Denisov
S
S
Department of Chemistry, Tel-Aviv Unversity, Tel-Aviv 69978, Israel.
Flach
S
S
Ovchinnikov
A A
AA
Yevtushenko
O
O
Zolotaryuk
Y
Y