Regular and Chaotic Dynamics of the Lorenz-Stenflo System

Regular and Chaotic Dynamics of the Lorenz-Stenflo System
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DOI:
10.1142/s0218127410025466
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发表时间:
2010
期刊:
Int. J. Bifurc. Chaos
影响因子:
--
通讯作者:
J. C. Xavier;P. Rech
J. C. Xavier;P. Rech
中科院分区:
其他
文献类型:
--
作者:
J. C. Xavier;P. Rech

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我们分析研究了 Stenflo 获得的声重力波广义洛伦兹方程的动力学。通过使用笛卡尔符号规则和劳斯-赫尔维茨检验,我们确定了 Lorenz-Stenflo 系统不动点的稳定性,尽管没有特征值方程的显式解。我们确定固定点的干草叉和 Hopf 分叉发生的精确位置,作为系统参数的函数。参数空间图、李雅普诺夫指数和分岔图用于对周期性和混沌吸引子进行数值表征。
We analytically investigate the dynamics of the generalized Lorenz equations obtained by Stenflo for acoustic gravity waves. By using Descartes' Rule of Signs and Routh–Hurwitz Test, we decide on the stability of the fixed points of the Lorenz–Stenflo system, although without explicit solution of the eigenvalue equation. We determine the precise location where pitchfork and Hopf bifurcation of fixed points occur, as a function of the parameters of the system. Parameter-space plots, Lyapunov exponents, and bifurcation diagrams are used to numerically characterize periodic and chaotic attractors.