Berlin 2008 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
DY: Fachverband Dynamik und Statistische Physik
DY 30: Nonlinear stochastic systems
DY 30.8: Vortrag
Freitag, 29. Februar 2008, 12:00–12:15, MA 001
Noise-Dependent Stability of the Synchronized State in a Coupled System of Active Rotators — •Sebastian F. Brandt1, Axel Pelster2, and Ralf Wessel1 — 1Department of Physics, Washington University in St. Louis, MO 63130-4899, USA — 2Fachbereich Physik, Universität Duisburg-Essen, Lotharstraße 1, 47048 Duisburg, Germany
We consider a Kuramoto model for the dynamics of an excitable system consisting of two coupled active rotators. Depending on both the coupling strength and the noise, the two rotators can be in a synchronized or a desynchronized state. The synchronized state of the system is most stable for intermediate noise intensity in the sense that the coupling strength required to desynchronize the system is maximal at this noise level. We evaluate the phase boundary between synchronized and desynchronized states through numerical and analytical calculations.