Synchronized clusters in coupled map networks: Stability analysis

Details Synchronized clusters in coupled map networks: Stability analysis Synchronized clusters in coupled map networks: Stability analysis

2003-07-22

arxiv.org/abs/nlin/0307037v1

Phys. Rev. E 72, 016212 (2005)

Nonlinear Sciences

Chaotic Dynamics

16 pages, 8 figures included in tex, Submitted to PRE

Scientific paper

We study self-organized (s-) and driven (d-) synchronization in coupled map networks for some simple networks, namely two and three node networks and their natural generalization to globally coupled and complete bipartite networks. We use both linear stability analysis and Lyapunov function approach for this study and determine stability conditions for synchronization. We see that most of the features of coupled dynamics of small networks with two or three nodes, are carried over to the larger networks of the same type. The phase diagrams for the networks studied here have features very similar to the different kinds of networks studied in Ref. \cite{sarika-REA2}. The analysis of the dynamics of the difference variable corresponding to any two nodes shows that when the two nodes are in driven synchronization, all the coupling terms cancel out whereas when they are in self-organized synchronization, the direct coupling term between the two nodes adds an extra decay term while the other couplings cancel out.

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