Berlin 2008 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 17: Poster I

DY 17.23: Poster

Dienstag, 26. Februar 2008, 16:00–18:00, Poster C

Multiple time-delayed feedback control of stochastic dynamics in a resonant tunneling diode — •Niels Majer and Eckehard Schöll — Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany

We study multiple time-delayed feedback control of noise-induced spatio-temporal oscillations in a double barrier resonant tunneling diode. The system is modeled by a set of partial differential equations of reaction-diffusion type with global coupling.

Below a Hopf bifurcation, Gaussian white noise sources and a multiple time-delayed feedback control force are applied to the system. Correlation times and timescales of the resulting noise-induced oscillations are investigated under variation of the control parameters. The obtained results are explained using the stability properties of the deterministic system.