3 papers
physics.comp-ph2025
Non-autonomous standard nontwist map
Marcos V. de Moraes, Iberê L. Caldas, Yves Elskens
Area-preserving nontwist maps locally violate the twist condition, giving rise to shearless curves. Nontwist systems appear in different physical contexts, such as plasma physics,…
nlin.CD2024
Identifying ballistic modes via Poincaré sections
André Farinha Bósio, Iberê Luiz Caldas, Ricardo Luiz Viana +1
Exploring chaotic systems via Poincaré sections has proven essential in dynamical systems, yet measuring their characteristics poses challenges to identify the various dynamical re…
physics.plasm-ph2018
Influence of the Radial Electric Field on the Shearless Transport Barriers in Tokamaks
F. A. Marcus, M. Roberto, I. L. Caldas +2
In tokamaks, internal transport barriers, produced by modifications of the plasma current profile, reduce particle transport and improve plasma confinement. The triggering of the i…