Regensburg 2007 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 16: Brownian motion and transport I

DY 16.6: Vortrag

Dienstag, 27. März 2007, 15:45–16:00, H3

Quasiperiodic ratchets with cold atoms — •Sergey Denisov — Institute of Physics, University of Augsburg, 86135 Augsburg, Germany

We investigate experimentally the route to quasiperiodicity in a driven ratchet for cold atoms, and examine the relationship between symmetries and transport while approaching the quasiperiodic limit.

Depending on the specific form of driving, quasiperiodicity results in the complete suppression of transport, or into the restoration of the symmetries which hold for a periodic driving.