RATCHETS:

  • symmetries: spatio-temporal symmetries and ways of violating them

  • particles (classical,quantum): single particle transport

  • interactions: effects of particle-particle interactions

  • solitons: field description of many interacting particles: soliton ratchets

  • spins: rectifying magnetization for classical and quantum spins, including interaction effects

  • cold atoms: application to transport of cold atoms (Cs, Rb)

  • BEC: even colder: transport of BEC

    mpi-pks/r[ pdf]


    Title: Comment on "Coherent Ratchets in Driven Bose-Einstein Condensates"
    Author: G. Benenti, G. Casati, S. Denisov, S. Flach, P. Hanggi, B. Li, D. Poletti
    Comments: Phys. Rev. Lett. 104, 228901 (2010) .

    mpi-pks/r[ pdf]


    Title: Quantum ratchet control - harvesting on Landau-Zener transitions
    Author: L. Morales-Molina, S. Flach, J.B. Gong
    Comments: EPL 83, 40005 (2008).

    mpi-pks/r[ ps and pdf]


    Title: Transporting cold atoms in optical lattices with ratchets: Symmetries and Mechanisms
    Author: S. Denisov, S. Flach, P. Haenggi
    Comments: pp. 181-194, in: Nonlinearities in Periodic Structures and Metamaterials, C. Denz, S. Flach, Y.S. Kivshar (Eds), Springer Berlin (2009).

    mpi-pks/r[ pdf]


    Title: Vortex and translational currents due to broken time-space symmetries
    Author: S. Denisov, Y. Zolotaryuk, S. Flach, O. Yevtushenko
    Comments: Phys. Rev. Lett. 100, 224102 (2008).

    mpi-pks/r[ pdf]


    Title: Resonant ratcheting of a Bose-Einstein condensate
    Author: Luis Morales-Molina, Sergej Flach
    Comments: New Journal of Physics 10, 013008 (2008).

    mpi-pks/r[ pdf]


    Title: Symmetries and their violation in systems with external ac fields (in russian)
    Author: Sergej Flach
    Comments: lecture held at winter school, Nizhnii Novgorod, 2006.

    mpi-pks/r[ pdf]


    Title: Periodically driven Quantum Ratchets: Symmetries and Resonances
    Author: S. Denisov, L. Morales-Molina, S. Flach and P. Hanggi
    Comments: Phys. Rev. A 75, 063424 (2007)

    mpi-pks/r[ pdf]


    Title: Quantum resonances and rectification of driven cold atoms in optical lattices
    Author: S. Denisov, L. Morales-Molina, and S. Flach
    Comments: Europhys. Lett. 79, 10007 (2007).

    mpi-pks/db,r[ pdf]


    Title: Optical ratchets with discrete cavity solitons
    Author:A.V. Gorbach, S. Denisov, S. Flach
    Comments: Optics Letters 31, 1702 (2006).

    mpi-pks/s,r[ pdf]


    Title: Energy flow of moving dissipative topological solitons
    Author:A.V. Gorbach, S. Denisov, S. Flach
    Comments: Chaos 16, 023125 (2006).

    mpi-pks/r[ pdf]


    Title: dc-biased stationary transport in the absence of dissipation
    Author: S. Denisov, S. Flach, P. Hanggi
    Comments: Europhys. Lett. 74, 588 (2006)

    mpi-pks/r,s[ pdf]


    Title: Energy flow puzzle of soliton ratchets
    Author: S. Denisov, S. Flach and A. Gorbach
    Comments: Europhys. Lett. 72, 183 (2005).

    mpi-pks/r[ pdf]


    Title: Symmetries and transport with quasiperiodic driving
    Author: S. Flach and S. Denisov
    Comments: Acta Phys. Pol. B 35 (2004) 1437.

    mpi-pks/0212002,r,s[ pdf]


    Title: Directed transport of modulated structures in the Frenkel-Kontorova model with a pulsating coupling
    Author: L. M. Floria, P.J. Martinez, S. Flach and M.V. Fistul
    Comments: Physica D 187, 100 (2004).

    mpi-pks/0204006,r [ pdf ] :


    Title:Broken space-time symmetries and mechanisms of rectification of ac fields by nonlinear (non)adiabatic response
    Author: S. Denisov, S. Flach, A. A. Ovchinnikov, O. Yevtushenko and Y. Zolotaryuk
    Comments: Phys. Rev. E 66, 041104 (2002).

    mpi-pks/0110011,r,sp [ pdf ] :


    Title:AC-driven quantum spins: resonant enhancement of transverse DC magnetization
    Author: S. Flach, A.E. Miroshnichenko and A.A. Ovchinnikov
    Comments: Phys. Rev. B 65, 104438 (2002).

    mpi-pks/0109012,r[ pdf ] :


    Title: DC currents in Hamiltonian systems by Levy flights
    Author: S. Denisov, J. Klafter, M. Urbakh and S. Flach
    Comments: Physica D 170, 131-142 (2002).

    mpi-pks/0110005,r[ pdf ] :


    Title: Broken symmetries and directed collective energy transport
    Author: S. Flach, Y. Zolotaryuk, A. E. Miroshnichenko and M. V. Fistul
    Comments: Phys. Rev. Lett. 88, 184101 (2002); nlin.PS/0110013.

    mpi-pks/0104005,r [ pdf ] :


    Title: Dynamical mechanisms of DC current generation in driven Hamiltonian systems
    Author: S. Denisov and S. Flach
    Comments: Phys. Rev. E 64, 056236 (2001); nlin.CD/0104006

    mpi-pks/0010002,r [ pdf ] :


    Title: Rectification of current in ac-driven nonlinear systems and symmetry properties of the Boltzmann equation
    Author: O. Yevtushenko, S. Flach, Y. Zolotaryuk and A. A. Ovchinnikov
    Comments: Europhys. Lett. 54, 141-147 (2001).

    mpi-pks/0002008,r,sp [ pdf ] :


    Title: Static magnetization induced by time-periodic fields with zero mean
    Author: Flach, S. and A.A. Ovchinnikov
    Comments: Physica A 292, 268 (2001).

    mpi-pks/9908016,r [ pdf ] :


    Title: AC-driven phase-dependent directed diffusion
    Author: Yevtushenko, O., S. Flach and K. Richter
    Comments: Phys. Rev. E 61 (2000) 7215-7218.

    mpi-pks/9909012,r [ pdf ] :


    Title: Directed current due to broken time-space symmetry
    Author: Flach, S., O. Yevtushenko and Y. Zolotaryuk
    Comments: Phys. Rev. Lett. 84 (2000) 2358-2361.