Model of Globally Coupled Duffing Flows

Details Model of Globally Coupled Duffing Flows Model of Globally Coupled Duffing Flows

2011-12-20

arxiv.org/abs/1112.4744v1

Nonlinear Sciences

Chaotic Dynamics

15 pages, 10 figures

Scientific paper

A Duffing oscillator in a certain parameter range shows period-doubling that shares the same Feigenbaum ratio with the logistic map, which is an important issue in the universality in chaos. In this paper a globally coupled lattice of Duffing flows (GCFL), which is a natural extension of the globally coupled logistic map lattice (GCML), is constructed. It is observed that GCFL inherits various intriguing properties of GCML and that universality at the level of elements is thus lifted to that of systems. Phase diagrams of GCFL are determined, which are essentially the same with those of GCML. Similar to the two-clustered periodic attractor of GCML, the GCFL two-clustered attractor exhibits a successive period-doubling with an increase of population imbalance between the clusters. A non-trivial distinction between the GCML and GCFL attractors that originates from the symmetry in the Duffing equation is investigated in detail.

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