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arXiv 1706.07313math.AP
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量子欧拉-泊松方程的QKP极限

The QKP limit of the quantum Euler-Poisson equation

Huimin Liu, Xueke Pu

摘要:

本文考虑二维量子Euler-Poisson系统长波极限下冷离子声波的Kadomtsev-Petviashvili(KP)方程,在Gardner-Morikawa变换的不同方向上采用不同的标度。结果表明,KP方程的类型依赖于标度量子参数$H>0$。导出了$H>2$的QKP-Ⅰ、$0<H<2$的QKP-Ⅱ和临界情况$H=2$的无色散KP(dKP)方程。这些限制的严格证明是在精心准备的初始数据的情况下,并选择关闭证明的规范是各向异性的两个方向,根据各向异性结构的KP方程以及加德纳-森川变换。结果可以推广到几个方向。

英文摘要:

In this paper, we consider the derivation of the Kadomtsev-Petviashvili (KP) equation for cold ion-acoustic wave in the long wavelength limit of the two-dimensional quantum Euler-Poisson system, under different scalings for varying directions in the Gardner-Morikawa transform. It is shown that the types of the KP equation depend on the scaled quantum parameter $H>0$. The QKP-I is derived for $H>2$, QKP-II for $0<H<2$ and the dispersive-less KP (dKP) equation for the critical case $H=2$. The rigorous proof for these limits is given in the well-prepared initial data case, and the norm that is chosen to close the proof is anisotropic in the two directions, in accordance with the anisotropic structure of the KP equation as well as the Gardner-Morikawa transform. The results can be generalized in several directions.

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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