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arXiv 2210.04748math.APmath.DSmath.FA
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渐近常系数微分算子谱的扰动及其应用

Perturbation of the spectra for asymptotically constant differential operators and applications

Shuang Chen, Jinqiao Duan

AI总结:

本文针对渐近常系数微分算子的谱建立统一扰动框架,基于指数二分性与Brouwer度理论,并应用于Ginzburg-Landau方程拟周期解、耦合系统fold-Hopf分岔周期解及双曲Burgers-Fisher模型周期环域的稳定性研究。

摘要:

我们研究一类具有渐近常系数微分算子的谱。这类算子广泛出现于非线性偏微分方程关于模式或非线性波的线性化中。我们提出了一个统一框架来证明相关谱的扰动结果。证明基于指数二分性和Brouwer度理论。作为应用,我们利用所发展的理论研究了Ginzburg-Landau方程拟周期解的稳定性、反应扩散系统与常微分方程耦合的fold-Hopf分岔周期解,以及双曲Burgers-Fisher模型的周期环域。

英文摘要:

We study the spectra for a class of differential operators with asymptotically constant coefficients.These operators widely arise as the linearizations of nonlinear partial differential equations about patterns or nonlinear waves. We present a unified framework to prove the perturbation results on the related spectra. The proof is based on exponential dichotomies and the Brouwer degree theory. As applications, we employ the developed theory to study the stability of quasi-periodic solutions of the Ginzburg-Landau equation,fold-Hopf bifurcating periodic solutions of reaction-diffusion systems coupled with ordinary differential equations, and periodic annulus of the hyperbolic Burgers-Fisher model.

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