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arXiv 1201.4063nlin.CDnlin.PS
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Turing模式的双曲混沌

Hyperbolic Chaos of Turing Patterns

Pavel V. Kuptsov, Sergey P. Kuznetsov, Arkady Pikovsky

摘要:

我们考虑在一个扩展系统的图灵模式的时间演化的Swift-Hohenberg型方程,由于外部的周期性参数调制的长波和短波模式的长度尺度为1:3的相关相继出现。我们从理论上和数值上证明了空间相位的模式,被观察到频闪,是由一个不断扩大的圆地图,使相应的混乱的图灵模式是双曲线,与一个奇异吸引子的Smale-Williams螺线管型。这种混沌相对于参数和边界条件的变化是鲁棒的。

英文摘要:

We consider time evolution of Turing patterns in an extended system governed by an equation of the Swift-Hohenberg type, where due to an external periodic parameter modulation long-wave and short-wave patterns with length scales related as 1:3 emerge in succession. We show theoretically and demonstrate numerically that the spatial phases of the patterns, being observed stroboscopically, are governed by an expanding circle map, so that the corresponding chaos of Turing patterns is hyperbolic, associated with a strange attractor of the Smale-Williams solenoid type. This chaos is shown to be robust with respect to variations of parameters and boundary conditions.

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