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Lagrangian chaos is experimentally investigated in a convective flow by means of Particle Tracking Velocimetry. The Finite Size Lyapunov Exponent analysis is applied to quantify dispersion properties at different scales. In the range of…

chao-dyn · 物理学 2009-10-31 G. Boffetta , M. Cencini , S. Espa , G. Querzoli

We consider the singularly perturbed limit of periodically excited two-dimensional FitzHugh-Nagumo systems. We show that the dynamics of such systems are essentially governed by an one-dimensional map and present a numerical scheme to…

混沌动力学 · 物理学 2013-12-10 Peterson T. C. Barbosa , Alberto Saa

In the last decade it has been shown that a large class of phase oscillator models admit low dimensional descriptions for the macroscopic system dynamics in the limit of an infinite number N of oscillators. The question of whether the…

混沌动力学 · 物理学 2017-09-13 Per Sebastian Skardal , Juan G. Restrepo , Edward Ott

We present and investigate a new type of implicit fractional linear multistep method of order two for fractional initial value problems. The method is obtained from the second order super convergence of the Gr\"unwald-Letnikov approximation…

数值分析 · 数学 2022-01-25 H. M. Nasir , Khadija Al Hasani

Intrinsic instability of trajectories characterizes chaotic dynamical systems. We report here that trajectories can exhibit a surprisingly high degree of stability, over a very long time, in a chaotic dynamical system. We provide a detailed…

混沌动力学 · 物理学 2017-07-17 Greg Huber , Marc Pradas , Alain Pumir , Michael Wilkinson

We study the coherent dynamics of globally coupled maps showing macroscopic chaos. With this term we indicate the hydrodynamical-like irregular behaviour of some global observables, with typical times much longer than the times related to…

chao-dyn · 物理学 2009-10-31 M. Cencini , M. Falcioni , D. Vergni , A. Vulpiani

Recently, Mboup, Join and Fliess [27], [28] introduced non-asymptotic integer order differentiators by using an algebraic parametric estimation method [7], [8]. In this paper, in order to obtain non-asymptotic fractional order…

数值分析 · 数学 2012-07-03 Dayan Liu , Olivier Gibaru , Wilfrid Perruquetti

In this paper, the purity of quantum states is applied to probe chaotic dissipative dynamics. To achieve this goal, a comparative analysis of regular and chaotic regimes of nonlinear dissipative oscillator (NDO) are performed on the base of…

量子物理 · 物理学 2014-09-01 A. R. Shahinyan , Lock Yue Chew , G. Yu. Kryuchkyan

Fluids cooled to the liquid-vapor critical point develop system-spanning fluctuations in density that transform their visual appearance. Despite the rich phenomenology of this critical point, there is not currently an explanation of the…

统计力学 · 物理学 2020-10-09 Moupriya Das , Jason R. Green

Two properties are needed for a classical system to be chaotic: exponential stretching and mixing. Recently, out-of-time order correlators were proposed as a measure of chaos in a wide range of physical systems. While most of the attention…

Based on the principle of chaotification for continuous-time autonomous systems, which relies on two basic properties of chaos, i.e., globally bounded with necessary positive-zero-negative Lyapunov exponents, this paper derives a feasible…

混沌动力学 · 物理学 2016-12-21 Simin Yu , Guanrong Chen

In this paper, we investigate consensus control of fractional-order multi-agent systems with order in (0,1) via sampled-data control. A new scheme to design distributed controllers with rigorous analysis is presented by utilizing the unique…

系统与控制 · 电气工程与系统科学 2020-07-13 Xinyao Li , Changyun Wen , Xiao-Kang Liu

This paper reveals some new and rich dynamics of a two-dimensional prey-predator system and to anticontrol the extinction of one of the species. For a particular value of the bifurcation parameter, one of the system variable dynamics is…

混沌动力学 · 物理学 2019-10-02 Marius-F. Danca , Michal Feckan , Nikolay Kuznetsov , Guanrong Chen

Chaotic systems have been investigated in the most diverse areas. One of the first steps in chaotic system research is the detection of chaos. The largest Lyapunov exponent (LLE) is one of the most widely used techniques for this purpose.…

数值分析 · 数学 2019-08-29 E. A. Sousa , E. G. Nepomuceno , M. F. S. Barroso

In this paper, a novel uncertain fractional-orders and parameters' inversion mechanism via the differential evolution algorithms (DE) with a general mathematical model is proposed for non-commensurate and hyper fractional chaotic systems.…

混沌动力学 · 物理学 2012-09-10 Fei Gao , Feng-xia Fei , Qian Xu , Yan-fang Deng , Yi-bo Qi

We study the long time behavior of second order particle systems interacting through global Lipschitz kernels. Combining hypocoercivity method in [37] and relative entropy method in [25], we are able to overcome the degeneracy of diffusion…

偏微分方程分析 · 数学 2024-09-05 Yun Gong , Zhenfu Wang , Pengzhi Xie

Mathematical analysis with numerical application of the newly formulated fractional version of the Adams-Bashforth method using the Atangana-Baleanu derivative which has nonlocal and nonsingular properties is considered in this paper. We…

数值分析 · 数学 2021-10-20 Kolade M. Owolabi , Abdon Atangana

A distinct feature of Hermitian quantum chaotic dynamics is the exponential increase of certain out-of-time-order-correlation (OTOC) functions around the Ehrenfest time with a rate given by a Lyapunov exponent. Physically, the OTOCs…

高能物理 - 理论 · 物理学 2024-06-17 Antonio M. García-García , Jacobus J. M. Verbaarschot , Jie-ping Zheng

We propose new chaos indicators for systems with extremely small positive Lyapunov exponents. These chaos indicators can firstly detect a sharp transition between the Arnold diffusion regime and the Chirikov diffusion regime of the…

混沌动力学 · 物理学 2015-03-19 Ken-ichi Okubo , Ken Umeno

This article presents an adaptive nonlinear delayed feedback control scheme for stabilizing the unstable periodic orbit of unknown fractional-order chaotic systems. The proposed control framework uses the Lyapunov approach and sliding mode…

系统与控制 · 电气工程与系统科学 2023-11-10 Bahram Yaghooti , Kaveh Safavigerdini , Reza Hajiloo , Hassan Salarieh