Results 61 to 70 of about 397 (113)

Chaos in Magnetoplasmas [PDF]

Nonlinear Processes in Geophysics, 1999
A nonlinear wave, in general, is equivalent to a nonlinear dynamical system, which exhibits the phenomena of chaos. By means of techniques of nonlinear dynamical systems, we have investigated the conditions under which nonlinear Alfvén waves and lower-
B. Buti
doaj  

Evaluation of Mindful Breathing Method Using Tablet Devices Through Chaos Analysis and Frequency Analysis: A Pilot Randomized Controlled Trial

Biomedical Engineering and Computational Biology
Introduction: University students face various stresses, including academic and career anxieties and a lack of interpersonal relationships. These stresses can elevate psychological burdens, negatively affecting their studies and daily lives.
Eiichi Togo
doaj   +1 more source

Chaotic Motion of Ions in Finite-amplitude Low-frequency Alfvén Waves

The Astrophysical Journal
Finite-amplitude low-frequency Alfvén waves (AWs) are ubiquitous in space plasmas, where they play a key role in the transport and dissipation of energy, particularly in the heating of ions in the solar corona and solar wind.
Jingyu Peng, Jiansen He, Rong Lin
doaj   +1 more source

Study of Optical Solitons and Quasi-Periodic Behaviour for the Fractional Cubic Quintic Nonlinear Pulse Propagation Model

Mathematics
This study explores analytical soliton solutions for the cubic–quintic time-fractional nonlinear non-paraxial pulse transmission model. This versatile model finds numerous uses in fiber optic communication, nonlinear optics, and optical signal processing.
Lotfi Jlali, Syed T. R. Rizvi, Sana Shabbir, Aly R. Seadawy   +3 more
doaj   +1 more source

Non-Linear Plasma Wave Dynamics: Investigating Chaos in Dynamical Systems

Mathematics
This work addresses the significant issue of plasma waves interacting with non-linear dynamical systems in both perturbed and unperturbed states, as modeled by the generalized Whitham–Broer–Kaup–Boussinesq–Kupershmidt (WBK-BK) Equations.
Raymond Ghandour, Abdullah S. Karar, Zaher Al Barakeh, Julien Moussa H. Barakat, Zia Ur Rehman   +4 more
doaj   +1 more source

Quantum Noise: Particles, Waves and Mixture

Applied Sciences
We carry out a theoretical investigation about quantum noise in coherent mixtures of states with different statistics. On the one hand, we investigate the dependence between the behavior wave-particle and associated noise.
Leonardo López-Hernández, Diego Alberto Lara-Bustillos, Guillermo de Jesús Rojas-Prado, Josué Cantera, Edna M. Hernández, Jehú López-Aparicio, Carlos Ernesto Vargas, Víctor Velázquez   +7 more
doaj   +1 more source

Many-body chaos and pole-skipping in holographic charged rotating fluids

Journal of High Energy Physics
Recent developments identify pole-skipping as a ‘smoking-gun’ signature of the hydrodynamic nature of chaos, offering an alternative way to probe quantum chaos in addition to the out-of-time-ordered correlator (OTOC).
Hong-Da Lyu, Jun-Kun Zhao, Li Li
doaj   +1 more source

Uncertainty Quantification and Global Sensitivity Analysis for Radio Wave Propagation in Evaporation Duct

Remote Sensing
Accurate prediction of radio wave propagation in evaporation ducts is critical for radar systems but faces significant environmental uncertainties. This study presents an uncertainty quantification and global sensitivity analysis framework comparing ...
Mingjian Li, Liguo Liu
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On-chip wave chaos for photonic extreme learning

Optics Letters
The increase in demand for scalable and energy efficient artificial neural networks has put the focus on novel hardware solutions. Integrated photonics offers a compact, parallel and ultra-fast information processing platform, specially suited for extreme learning machine (ELM) architectures. Here we experimentally demonstrate a chip-scale photonic ELM
Wilson, Matthew R., Smith, Jack A., Strain, Michael J., Porte, Xavier   +3 more
openaire   +4 more sources

Dynamics of soliton solutions, bifurcation, chaotic behavior, stability, and sensitivity analysis of the time-fractional Gardner equation

AIP Advances
In the present article, we investigate the stability, chaos, and bifurcation analysis of an eminent nonlinear evolution equation, namely, the time-fractional Gardner equation, which is a hybrid model that includes properties of both the Korteweg–de Vries
Md. Antajul Islam, Nasrin Nahar Rimu, Shuvo Sarker, Pinakee Dey, M. Ali Akbar   +4 more
doaj   +1 more source