Dresden 2009 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

DY: Fachverband Dynamik und Statistische Physik

DY 26: Poster II

DY 26.40: Poster

Donnerstag, 26. März 2009, 16:00–18:00, P1A

Semiclassical theory of switching between period two-states of parametrically forced oscillator — •Alvise Verso and Joachim Ankerhold — Institut für Theoretische Physik Universität Ulm, Germany

Switching between period two-states of an underdamped quantum oscillator parametrically forced is studied in a rotating frame. Within a systematic semiclassical formalism an extension of the classical diffusion equation is derived starting from a quantum master equation. The decay rate is obtained from the stationary non-equilibrium solution and captures the intimate interplay between thermal and quantum fluctuations above the crossover to the deep quantum regime.