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Your search keyword '"Palmero, F."' showing total 2 results
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2 results on '"Palmero, F."'

1. Scattering of discrete solitons from an impurity in the saturable nonlinear Schrödinger equation.

Author

Tsoplefack, J., Palmero, F., Provata, A., Frantzeskakis, D. J., and Cuevas-Maraver, J.

Subjects
*SOLITONS, *NONLINEAR Schrodinger equation, *CUBIC equations, *SCHRODINGER equation
Abstract

We study the scattering of solitons from an impurity in the framework of the discrete nonlinear Schrödinger equation with a saturable nonlinearity. We show that this model displays a complex scenario compared to the same equation with cubic nonlinearity. For instance, even considering a single value of the soliton speed and frequency, one can generally observe the existence of a reflected and a transmitted soliton after the interaction between the incoming soliton and the impurity, and that in the case of an attractive impurity, a trapped soliton can coexist with the reflected and transmitted ones. [ABSTRACT FROM AUTHOR]

Published
2024
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2. Amplitude modulation control of spatiotemporal chaos in starlike networks of damped-driven pendula.

Author

Chacón, R., García-Hoz, A. Martínez, and Palmero, F.

Subjects
*AMPLITUDE modulation, *LYAPUNOV exponents, *REGULARIZATION parameter, *STAR-like functions, *BIFURCATION diagrams
Abstract

Applying amplitude modulations to a parametrically excited damped pendulum is shown to be a reliable method to control (suppress or enhance) its chaotic behaviour. Analytical (Melnikov analysis) and numerical (Lyapunov exponents and bifurcation diagrams) results show an effective control scenario for a wide range of resonances between the two excitations implicated. Different routes of regularization as the chaos-controlling parameters vary are identified, including period-doubling and crises. The method's effectiveness at suppressing spatiotemporal chaos of starlike networks of sinusoidally coupled chaotic pendula is demonstrated where effective regularization is obtained under localized control on an increasing number of pendula. • Chaos. • Control of chaos. • Parametrically excited damped pendulum. • Starlike networks of sinusoidally coupled chaotic pendula. [ABSTRACT FROM AUTHOR]

Published
2024
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