Regensburg 2007 – scientific programme
Parts | Days | Selection | Search | Downloads | Help
DY: Fachverband Dynamik und Statistische Physik
DY 24: Poster I
DY 24.23: Poster
Wednesday, March 28, 2007, 16:00–18:00, Poster D
Dynamical Behavior and Control of Coupled — Heinz Georg Schuster1, Michel Le Van Quyen2, Mario Chavez2, •Jan Köhler1, and Jörg Mayer1 — 1Institut für Theoretische Physik und Astrophysik, Christian-Albrechts Universität, Olshausenstraße 40, 24098 Kiel, Germany — 2LENA CNRS UPR640, Hopital de la Salpetriere,Paris, France
We investigate the dynamical behavior of all to all coupled threshold elements with selfinhibition. Coupled threshold elements with selfinhibition display a phase transition to an oscillating state where the elements fire in synchrony with a period T that is of the order of the dead time caused by selfinhibition . This transition is noise activated and therefore displays strong collectively enhanced stochastic resonances. For an exponentially decaying distribution of dead-times the transition to the oscillating state occurs, coming from high noise temperatures, via a Hopf bifurcation and coming from low temperatures, via a saddle node bifurcation. The transitions can be triggered externally by noise and oscillating signals.