107 citations · 307 across the 5 of their papers we have counts for
5 papers
Almost compact moving breathers with fine-tuned discrete time quantum walks
I. Vakulchyk, M. V. Fistul, Y. Zolotaryuk +1
Discrete time quantum walks are unitary maps defined on the Hilbert space of coupled two-level systems. We study the dynamics of excitations in a nonlinear discrete time quantum wa…
Broken space-time symmetries and mechanisms of rectification of ac fields by nonlinear (non)adiabatic response
S. Denisov, S. Flach, A. A. Ovchinnikov +2
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 tempo…
Broken symmetries and directed collective energy transport
S. Flach, Y. Zolotaryuk, A. E. Miroshnichenko +1
We study the appearance of directed energy current in homogeneous spatially extended systems coupled to a heat bath in the presence of an external ac field E(t). The systems are de…
Rectification of current in ac-driven nonlinear systems and symmetry properties of the Boltzmann equation
O. Yevtushenko, S. Flach, Y. Zolotaryuk +1
We study rectification of a current of particles moving in a spatially periodic potential under the influence of time-periodic forces with zero mean value. If certain time-space sy…
Discrete breathers in classical spin lattices
Y. Zolotaryuk, S. Flach, V. Fleurov
Discrete breathers (nonlinear localised modes) have been shown to exist in various nonlinear Hamiltonian lattice systems. In the present paper we study the dynamics of classical sp…