On explosion of the chaotic attractor
2014
There are presented examples of the rather sudden and violent explosion of the strange attractor of a one-dimensional driven damped anharmonic oscillator induced by a relatively small change of the amplitude of the strongly nonperturbative periodic driving force. A phenomenologic characterization of the explosion of the strange attractor has been given in terms of the behavior of the average maximal Lyapunov exponent ${\bar \lambda}$ and that of the fractal dimension $D_{q}$ for $q=-4$. It is shown that the building up of the exploding strange attractor is accompanied by a nearly linear increase of the maximal average Lyapunov exponent ${\bar \lambda}$. A sudden jump of the fractal dimension $D_{-4}$ is detected when the explosion starts off from an attractor consisting of disjoint bunches separated by an empty phase-space region.
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