Pattern formation induced by additive noise: a moment-based analysis

Pattern formation induced by additive noise: a moment-based analysis
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加性噪声引起的图案形成:基于矩的分析

DOI:
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发表时间:
2005
期刊:
影响因子:
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通讯作者:
D. Ray
D. Ray
中科院分区:
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文献类型:
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作者:
Syed Shahed Riaz;S. Dutta;Sandip Kar;D. Ray

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抽象。 分析了不稳定性和斑图形成的条件 由空间扩展系统中的加性噪声引起。的 这种方法是基于对高阶矩的考虑, 提取适当阶次的非线性。我们的分析 揭示了立方非线性对 加性噪声的领先秩序,决定了 不稳定阈值,这是由数值证实 在两个特定的反应扩散系统中进行模拟。
Abstract. We analyze the condition for instability and pattern formation induced by additive noise in spatially extended systems. The approach is based on consideration of higher moments which extract out nonlinearities of appropriate order. Our analysis reveals that cubic nonlinearity plays a crucial role for the additive noise to a leading order that determines the instability threshold which is corroborated by numerical simulation in two specific reaction-diffusion systems.