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arXiv 2205.04540math.APmath-phmath.MP
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$\R^3$中弗拉索夫-泊松系统的非线性朗道阻尼:泊松平衡

Nonlinear Landau damping for the Vlasov-Poisson system in $\R^3$: the Poisson equilibrium

Alexandru Ionescu, Benoit Pausader, Xuecheng Wang, Klaus Widmayer

AI总结:

研究欧氏空间中弗拉索夫-泊松系统的泊松齐次平衡渐近稳定性,证明其小光滑局域扰动存在全局解且以多项式速率散射到线性解,阐明了该欧氏问题与周期情形朗道阻尼的关键差异。

摘要:

我们证明了欧氏空间$\mathbb{R}^3$中弗拉索夫-泊松系统解的泊松齐次平衡的渐近稳定性。更确切地说,我们表明泊松平衡的小的、光滑的且局域化的扰动会生成弗拉索夫-泊松系统的全局解,当$t\to\infty$时,这些解以多项式速率散射到线性解。\n 我们在此考虑的欧氏问题与周期情形下关于朗道阻尼的经典工作在若干方面存在显著差异。最重要的是,线性化问题无法满足“彭罗斯条件”。因此,我们的系统包含共振(小分母),且电场是静电分量与一个更大的振荡分量的叠加,二者均以多项式速率衰减。

英文摘要:

We prove asymptotic stability of the Poisson homogeneous equilibrium among solutions of the Vlassov-Poisson system in the Euclidean space $\mathbb{R}^3$. More precisely, we show that small, smooth, and localized perturbations of the Poisson equilibrium lead to global solutions of the Vlasov-Poisson system, which scatter to linear solutions at a polynomial rate as $t\to\infty$. The Euclidean problem we consider here differs significantly from the classical work on Landau damping in the periodic setting, in several ways. Most importantly, the linearized problem cannot satisfy a "Penrose condition". As a result, our system contains resonances (small divisors) and the electric field is a superposition of an electrostatic component and a larger oscillatory component, both with polynomially decaying rates.

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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