Display Abstract

Title Noninvasive Control of Synchrony in Networks Coupled with Heterogeneous Delays

Name Eckehard Schoell
Country Germany
Email schoell@physik.tu-berlin.de
Co-Author(s) Chol-Ung Choe, Ryong-Son Kim, Philipp H{\"o}vel
Submit Time 2014-02-24 16:55:38
Session
Special Session 13: Nonlocally coupled dynamical systems: Analysis and applications
Contents
We consider a network of Hopf normal forms (Stuart-Landau oscillators) coupled with heterogeneous delays. By tuning the coupling parameters, different synchronization patterns, i.e., in-phase, splay, and clustering, can be selected. Our coupling scheme allows for arbitrary delays independent of the period of the synchronized periodic orbit. The characteristic equation for Floquet exponents of the heterogeneous delay network is derived in an analytical form, which reveals the coupling parameters for successful stabilization. The equation takes a unified form for both subcritical and supercritical Hopf bifurcations regardless of the synchronization patterns. The analysis of Floquet exponents and direct numerical simulations show that the heterogeneity in the delays drastically facilitates stabilization and provides an enlarged parameter region for successful control. Finally, we consider the thermodynamic limit in the framework of a mean field approximation and show that heterogeneous delays offer an enhanced performance of control.