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Molecular dynamics investigation of soliton propagation in a two‐dimensional Yukawa liquid
Contributions to Plasma Physics ( IF 1.6 ) Pub Date : 2020-03-23 , DOI: 10.1002/ctpp.201900197
Zoltán Donkó 1 , Peter Hartmann 1 , Ranna U. Masheyeva 2 , Karlygash N. Dzhumagulova 2
Affiliation  

We investigate via molecular dynamics simulations the propagation of solitons in a two‐dimensional many‐body system characterized by Yukawa interaction potential. The solitons are created in an equilibrated system by the application of electric field pulses. Such pulses generate pairs of solitons, which are characterized by a positive and negative density peak, respectively, and which propagate into opposite directions. At small perturbation, the features propagate with the longitudinal sound speed, from which an increasing deviation is found at higher density perturbations. An external magnetic field is found to block the propagation of the solitons, which can, however, be released upon the termination of the magnetic field and can propagate further into directions that depend on the time of trapping and the magnetic field strength.

中文翻译:

二维汤河液体中孤子传播的分子动力学研究

我们通过分子动力学模拟研究孤子在以Yukawa相互作用势为特征的二维多体系统中的传播。通过施加电场脉冲在平衡的系统中创建孤子。这样的脉冲产生一对孤子,分别以正和负密度峰为特征,并向相反的方向传播。在较小的扰动下,特征会随着纵向声速传播,在较高的密度扰动下,声速会逐渐增大。发现外部磁场阻止了孤子的传播,但是,可以在磁场终止时释放孤子,并且可以进一步传播到取决于捕获时间和磁场强度的方向。
更新日期:2020-03-23
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