Modulational Instability of Dust-Ion-Acoustic Modulated Envelope Structures in Ultracold Quantum Complex Plasmas: Solitons, Rogue Waves, and Breathers

IF 1.5 4区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY
Haifa A. Alyousef, Fazal Wahed,  Ata-ur-Rahman, S. Neelam Naeem, Samir A. El-Tantawy
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Abstract

In this study, we use a one-dimensional quantum hydrodynamic model to investigate the dynamics of amplitude-modulated dust ion-acoustic waves (DIAWs) in an ultracold, three-component quantum complex plasma composed of inertialess electrons, inertial ions, and immobile negatively charged dust particles. A nonlinear Schrödinger equation (NLSE) is reduced from the set of fluid equations via the reductive perturbation technique. The dispersion relation and group velocity are found to depend upon the wave number and related plasma parameters (i.e., the quantum diffraction parameter and dust concentration). It is noted that dispersion and nonlinear coefficients vary with wave number and parametric values of plasma. We thoroughly examined the modulational instability (MI) calculated from the NLSE, finding that dust concentration and the diffraction parameter significantly influence the conditions for the MI. Based on the MI criteria and relevant physical plasma parameters, the regions of stability and instability are carefully identified. Furthermore, we explored nonlinear modulated structures such as bright-type envelopes (pulses), dark-type envelope solitons (holes or voids), breathers, and rogue waves, which can propagate in both stable and unstable regions.

超冷量子复合等离子体中尘埃-离子-声学调制包络结构的调制不稳定性:孤子、异常波和呼吸子
在这项研究中,我们使用一维量子流体动力学模型研究了由无惯性电子、惯性离子和不移动的带负电荷尘埃粒子组成的超冷三组分量子复合等离子体中调幅尘埃离子声波(DIAWs)的动力学。利用约化微扰技术从流体方程组中简化出非线性Schrödinger方程(NLSE)。发现色散关系和群速度取决于波数和相关的等离子体参数(即量子衍射参数和尘埃浓度)。注意到色散系数和非线性系数随等离子体波数和参数值的变化而变化。我们对NLSE计算的调制不稳定性(MI)进行了深入的研究,发现粉尘浓度和衍射参数对MI的条件有显著影响。基于MI标准和相关的物理等离子体参数,我们仔细地确定了稳定和不稳定的区域。此外,我们还探索了可以在稳定和不稳定区域传播的非线性调制结构,如亮型包络(脉冲)、暗型包络孤子(空穴或空洞)、呼吸子和异常波。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Brazilian Journal of Physics
Brazilian Journal of Physics 物理-物理:综合
CiteScore
2.50
自引率
6.20%
发文量
189
审稿时长
6.0 months
期刊介绍: The Brazilian Journal of Physics is a peer-reviewed international journal published by the Brazilian Physical Society (SBF). The journal publishes new and original research results from all areas of physics, obtained in Brazil and from anywhere else in the world. Contents include theoretical, practical and experimental papers as well as high-quality review papers. Submissions should follow the generally accepted structure for journal articles with basic elements: title, abstract, introduction, results, conclusions, and references.
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