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Broken space-time symmetries and mechanisms of rectification of ac fields by nonlinear (non)adiabatic responseDenisov S, Flach S, Ovchinnikov AA, Yevtushenko O, Zolotaryuk YPhys. Rev. E 66, 041104 (2002) 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. arXiv
[Oslo Metropolitan University]
[TKD]
[Department of Computer Science]
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