Resonance and weak chaos in quasiperiodically-forced circle maps

JD Meiss, E Sander - … in Nonlinear Science and Numerical Simulation, 2024 - Elsevier
In this paper, we distinguish between four categories of dynamics for quasiperiodically-
forced (QPF) circle maps: resonant and incommensurate regular dynamics, and strongly and …

Computing Lyapunov Exponents using Weighted Birkhoff Averages

E Sander, JD Meiss - arXiv preprint arXiv:2409.08496, 2024 - arxiv.org
The Lyapunov exponents of a dynamical system measure the average rate of exponential
stretching along an orbit. Positive exponents are often taken as a defining characteristic of …

Kinetic versus magnetic chaos in toroidal plasmas: A systematic quantitative comparison

HT Moges, Y Antonenas, G Anastassiou… - arXiv preprint arXiv …, 2023 - arxiv.org
Magnetic field line chaos occurs under the presence of non-axisymmetric perturbations of an
axisymmetric equilibrium and is manifested by the destruction of smooth flux surfaces …

[HTML][HTML] Breather bound states in a parametrically driven magnetic wire

CJ Castro, I Ortega-Piwonka, BA Malomed, D Urzagasti… - Symmetry, 2024 - mdpi.com
We report the results of a systematic investigation of localized dynamical states in the model
of a one-dimensional magnetic wire, which is based on the Landau–Lifshitz–Gilbert (LLG) …

Kinetic vs magnetic chaos in toroidal plasmas: A systematic quantitative comparison

HT Moges, Y Antonenas, G Anastassiou, C Skokos… - Physics of …, 2024 - pubs.aip.org
Magnetic field line chaos occurs under the presence of non-axisymmetric perturbations of an
axisymmetric equilibrium and is manifested by the destruction of smooth flux surfaces …

Approximate entropy analysis for nonlinear beam dynamics

Y Li, R Rainer - Physical Review Accelerators and Beams, 2024 - APS
In this paper, we applied an approximate entropy (ApEn) analysis to nonlinear beam
dynamics. Due to the presence of strong nonlinear magnets, the degree of chaos in beam …

A Comparison Between Four Chaotic Indicators in Systems With Hidden Attractors

JO Maaita, D Prousalis - Journal of …, 2025 - asmedigitalcollection.asme.org
A nonregular oscillation is not enough to define a system as chaotic. A more in-depth
investigation is required to prove the existence of chaotic behavior, which is challenging …

Isochronous and period-doubling diagrams for symplectic maps of the plane

T Zolkin, S Nagaitsev, I Morozov, S Kladov… - arXiv preprint arXiv …, 2024 - arxiv.org
Symplectic mappings of the plane serve as key models for exploring the fundamental nature
of complex behavior in nonlinear systems. Central to this exploration is the effective …

Online regularization of Poincar\'e map of storage rings with Shannon entropy

Y Li, K Anderson, D Xu, Y Hao, K Ha, Y Hidaka… - arXiv preprint arXiv …, 2024 - arxiv.org
Shannon entropy, as a chaos indicator, is used for online Poincar\'e map regularization and
dynamic aperture optimization in the National Synchrotron Light Source-II (NSLS-II) ring …

[PDF][PDF] Extrapolation of Time Evolution of Chaos Indicators Applied to Single-Particle Tracking Simulations in Circular Accelerators

AA Levison - 2024 - inspirehep.net
Optimising lattice designs for circular colliders, such as the CERN Large Hadron Collider
(LHC), is critical to maximising performance and luminosity. Given the limited computational …