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arXiv 1601.00844nlin.PSnlin.CD
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光学纹理:表征时空混沌

Optical textures: characterizing spatiotemporal chaos

Marcel G. Clerc, Gregorio González-Cortés, Vincent Odent, Mario Wilson

摘要:

由于耗散自组织的存在,能量注入和耗散的宏观系统会表现出复杂的时空行为。在这里,我们报告了一个一维和二维的图案形成设置,它表现出从静止的图案时空混沌纹理的过渡,基于空间调制的输入光束和光学反馈的液晶层。利用时空图的适当投影,我们确定了最大的李雅普诺夫指数。联合起来,这个指数和傅立叶变换使我们能够区分时空混沌和振幅湍流的概念,这通常是合并。

英文摘要:

Macroscopic systems subjected to injection and dissipation of energy can exhibit complex spatiotemporal behaviors as result of dissipative self-organization. Here, we report a one and two dimensional pattern forming set up, which exhibits a transition from stationary patterns to spatiotemporal chaotic textures, based on a nematic liquid crystal layer with spatially modulated input beam and optical feedback. Using an adequate projection of spatiotemporal diagrams, we determine the largest Lyapunov exponent. Jointly, this exponent and Fourier transform allow us to distinguish between spatiotemporal chaos and amplitude turbulence concepts, which are usually merged.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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