Chaotic Behavior in Diffusively Coupled Systems

We study emergent oscillatory behavior in networks of diffusively coupled nonlinear ordinary differential equations. Starting from a situation where each isolated node possesses a globally attracting equilibrium point, we give, for an arbitrary network configuration, general conditions for the existence of the diffusive coupling of a homogeneous strength which makes the network dynamics chaotic. The method is based on the theory of local bifurcations we develop for diffusively coupled networks. We, in particular, introduce the class of the so-called versatile network configurations and prove that the Taylor coefficients of the reduction to the center manifold for any versatile network can take any given value.

Automated summary

We study emergent oscillatory behavior in networks of diffusively coupled nonlinear ordinary differential equations. We give general conditions for the existence of chaotic network dynamics under homogeneous diffusive coupling for any network configuration. Our method is based on the theory of local bifurcations developed for diffusively coupled networks. In particular, we introduce the class of versatile network configurations and prove that the Taylor coefficients of the reduction to the center manifold can take any given value for any versatile network.