Short-wavelength soliton in a fully degenerate quantum plasma

被引：2
|
作者：
Lashkin, Volodymyr M. [1 ,2 ]
机构：
[1] Inst Nucl Res, Pr Nauki 47, UA-03028 Kiev, Ukraine
[2] Space Res Inst, Pr Glushkova 40 K 4-1, UA-03680 Kiev, Ukraine
来源：
PHYSICS OF PLASMAS | 2020年 / 27卷 / 10期
关键词：
DYNAMICS;
D O I：
10.1063/5.0025184
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
We present a novel one-dimensional nonlinear evolution equation governing the dynamics short-wavelength longitudinal waves in a nonrelativistic fully degenerate quantum plasma using kinetic equation for the Wigner function. The linear dispersion of the equation has a form of "zero sound" similar to k exp ( - k 2 ), where k is the wave number, and it strongly differs from previously known nonlinear evolution equations. We numerically find the corresponding soliton solutions and demonstrate that the collisions between three solitons turn out to be elastic, resulting only in phase shifts.
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收藏
页数：6
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