Phase dynamics in the real Ginzburg‐Landau equation

Phase dynamics in the real Ginzburg‐Landau equation
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真实 Ginzburg-Landau 方程中的相动力学

DOI:
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发表时间:
2004
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影响因子:
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通讯作者:
G. Schneider
G. Schneider
中科院分区:
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文献类型:
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作者:
I. Melbourne;G. Schneider

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空间周期平衡点A(X,T)=<$1 − q2 e iqX + i <$0是Ginzburg-Landau方程<$TA =<$2XA + A − A的局部优选平面形|一|2.为了描述全局空间行为,可以形式化地导出局域波数q的演化方程。局域波数q近似满足所谓的相扩散方程<$τ q =<$2 <$h(q)。这是本文的目的,以解释在何种程度上相扩散方程是有效的,证明这种形式的近似估计。(© 2004 WILEY ‐ VCH Verlag GmbH & Co. KGaA,魏因海姆)
Spatially periodic equilibria A(X, T) = √1 − q2 e  iqX+iϕ 0 are the locally preferred planform for the Ginzburg‐Landau equation ∂TA = ∂2XA + A − A|A|2. To describe the global spatial behavior, an evolution equation for the local wave number q can be derived formally. The local wave number q satisfies approximately a so called phase diffusion equation ∂τq = ∂2ξh(q). It is the purpose of this paper to explain the extent to which the phase diffusion equation is valid by proving estimates for this formal approximation. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)