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arXiv 2103.06608math.PRmath.AP
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随机Burgers方程强解的大时间行为

Large time behavior of strong solutions for stochastic Burgers equation

Zhao Dong, Feimin Huang, Houqi Su

摘要:

考虑一类随机Burgers方程的强解的大时间行为,其中x的位置受布朗噪声扰动.自从A. Ilin和O. Oleinik [21] in 1964.然而,这些波型在随机扰动下的稳定性至今还不清楚。本文给出了一维随机Burgers方程稀疏粘性激波的稳定性问题的一个明确的答案。也就是说,在白噪声扰动下,稀疏波仍然是稳定的,而粘性激波还不是稳定的。此外,还得到了向稀疏波的时间收敛速度。为了得到期望的衰减率,推导出一个重要的不等式(用面积不等式表示)。这个不等式在证明中起着重要的作用,并可能在随机和确定性偏微分方程的相关问题中有应用。

英文摘要:

We consider the large time behavior of strong solutions to a kind of stochastic Burgers equation, where the position x is perturbed by a Brownian noise. It is well known that both the rarefaction wave and viscous shock wave are time-asymptotically stable for deterministic Burgers equation since the pioneer work of A. Ilin and O. Oleinik [21] in 1964. However, the stability of these wave patterns under stochastic perturbation is not known until now. In this paper, we give a definite answer to the stability problem of the rarefaction and viscous shock waves for the 1-d stochastic Burgers equation. That is, the rarefaction wave is still stable under white noise perturbation and the viscous shock is not stable yet. Moreover, a time-convergence rate toward the rarefaction wave is obtained. To get the desired decay rate, an important inequality (denoted by Area Inequality) is derived. This inequality plays essential role in the proof, and may have applications in the related problems for both the stochastic and deterministic PDEs.

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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