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arXiv 1710.03089math.APmath-phmath.MP
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双极Vlasov-Poisson-Boltzmann系统非线性波型的稳定性

Stability of nonlinear wave patterns to the bipolar Vlasov-Poisson-Boltzmann system

Hailiang Li, Yi Wang, Tong Yang, Mingying Zhong

摘要:

本文主要研究双极Vlasov-Poisson-Boltzmann(VPB)系统粘性激波和稀疏波的非线性稳定性。为此,受文献[21,23]中Boltzmann方程的微观-宏观分解的启发,我们首先围绕双极VPB系统的局部Maxwell方程建立了一个新的微观-宏观分解,并给出了一个统一的框架来研究该系统基本波型的非线性稳定性。然后,作为新分解的应用,证明了一维双极Vlasov-Poisson-Boltzmann系统的两种典型非线性波型:粘性激波和稀疏波的时间渐近稳定性。更精确地说,首先证明了在初始扰动不满足零宏观质量条件的情况下,第一和第三特征场中两个Boltzmann激波剖面的线性叠加对一维双极VPB系统在适当的位移范围内是非线性稳定的。然后对一维双极VPB系统证明了稀疏波扇对可压缩Euler方程的时间渐近稳定性。这两个结果涉及与附加力耦合的Boltzmann方程波型的非线性稳定性,结合文献[18]中的谱分析,有助于理解在二元碰撞、相互作用和静电势作用下带电粒子输运中波型周围的复杂动力学行为.

英文摘要:

The main purpose of the present paper is to investigate the nonlinear stability of viscous shock waves and rarefaction wave for bipolar Vlasov-Poisson-Boltzmann (VPB) system. To this end, motivated by the micro-macro decomposition to the Boltzmann equation in [21, 23], we first set up a new micro-macro decomposition around the local Maxwellian related to the bipolar VPB system and give a unified framework to study the nonlinear stability of the basic wave patterns to the system. Then, as the applications of this new decomposition, the time-asymptotic stability of the two typical nonlinear wave patterns, viscous shock waves and rarefaction wave, are proved for the 1D bipolar Vlasov-Poisson-Boltzmann system. More precisely, it is first proved that the linear superposition of two Boltzmann shock profiles in the first and third characteristic fields is nonlinearly stable to the 1D bipolar VPB system up to some suitable shifts without the zero macroscopic mass conditions on the initial perturbations. Then the time-asymptotic stability of rarefaction wave fan to compressible Euler equations is proved to 1D bipolar VPB system. These two results are concerned with the nonlinear stability of wave patterns for Boltzmann equation coupled with additional (electric) forces, which together with spectral analysis made in [18] sheds light on understanding the complicated dynamic behaviors around the wave patterns in the transportation of charged particles under the binary collisions, mutual interactions, and the effect of the electrostatic potential forces.

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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