对“强耗散强耦合复杂尘埃等离子体中的同宿混沌”的评论

Comment on "Homoclinic chaos in strongly dissipative strongly coupled complex dusty plasmas".

作者信息

Saha Asit, Banerjee Santo

机构信息

Department of Mathematics, Sikkim Manipal Institute of Technology, Sikkim Manipal University, Majitar, Rangpo, East-Sikkim 737136, India.

Department of Mathematical Sciences, Politecnico di Torino, Corso Duca degli Abruzzi 24, Turin, Italy.

出版信息

Phys Rev E. 2021 Jul;104(1-2):017201. doi: 10.1103/PhysRevE.104.017201.

DOI:10.1103/PhysRevE.104.017201

PMID:34412278

Abstract

In a recent paper [S. Ghosh, Phys. Rev. E 103, 023205 (2021)2470-004510.1103/PhysRevE.103.023205], the transport properties of the two-dimensional weakly nonlinear quasilongitudinal dust lattice mode were investigated in a highly viscous, strongly coupled, and weakly ionized plasma. Based on the computational results, the author predicted strong viscosity induced Shilnikov homoclinic chaos. In this Comment, it is shown that the dynamical system presented in the paper is inconsistent and incorrect because of an error in the expression of ε. As a result, period-2, period-4, chaotic and homoclinic chaotic phenomena do not exist, which were observed in the paper.

摘要

在最近的一篇论文中[S. 戈什，《物理评论E》103, 023205 (2021)2470 - 004510.1103/PhysRevE.103.023205]，研究了二维弱非线性准纵向尘埃晶格模式在高粘性、强耦合和弱电离等离子体中的输运性质。基于计算结果，作者预测了强粘性诱导的希利尼科夫同宿混沌。在本评论中，表明由于ε表达式中的一个错误，该论文中提出的动力学系统是不一致且不正确的。因此，论文中所观察到的周期2、周期4、混沌和同宿混沌现象并不存在。