Anomalous spatio-temporal chaos in a two-dimensional system of nonlocally coupled oscillators |
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Authors: | Nakao Hiroya |
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Institution: | Department of Physics, Graduate School of Sciences, Kyoto University, Kyoto 606-8502, Japan. |
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Abstract: | A two-dimensional system of nonlocally coupled complex Ginzburg-Landau oscillators is investigated numerically for the first time. As previously shown for the one-dimensional case, this two-dimensional system exhibits anomalous spatio-temporal chaos characterized by power-law spatial correlations. In this chaotic regime, the amplitude difference between neighboring elements displays temporal noisy on-off intermittency. The system is also spatially intermittent in this regime, as revealed by multiscaling analysis: The amplitude field is multiaffine and the difference field is multifractal. Correspondingly, the probability distribution function of the measure defined for each field is strongly non-Gaussian, exhibiting scale-dependent deviations in the tail due to intermittency. (c) 1999 American Institute of Physics. |
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