Ordered and Disordered Defect Chaos

Details Ordered and Disordered Defect Chaos Ordered and Disordered Defect Chaos

1997-04-21

arxiv.org/abs/chao-dyn/9704020v1

Physics

Condensed Matter

Soft Condensed Matter

8 pages revtex, 8 figures

Scientific paper

Defect-chaos is studied numerically in coupled Ginzburg-Landau equations for parametrically driven waves. The motion of the defects is traced in detail yielding their life-times, annihilation partners, and distances traveled. In a regime in which in the one-dimensional case the chaotic dynamics is due to double phase slips, the two-dimensional system exhibits a strongly ordered stripe pattern. When the parity-breaking instability to traveling waves is approached this order vanishes and the correlation function decays rapidly. In the ordered regime the defects have a typical life-time, whereas in the disordered regime the life-time distribution is exponential. The probability of large defect loops is substantially larger in the disordered regime.

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