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Mostrando ítems 11-17 de 17
Artículo
Kuznetsov–Ma breather-like solutions in the Salerno model
(Springer Verlag, 2020-07)
The Salerno model is a discrete variant of the celebrated nonlinear Schr¨odinger (NLS) equation interpolating between the discrete NLS (DNLS) equation and completely integrable Ablowitz-Ladik (AL) model by appropriately ...
Artículo
Backcasting COVID-19: A physics-informed estimate for early case incidence
(Royal Society, 2022-12)
It is widely accepted that the number of reported cases during the first stages of the COVID-19 pandemic severely underestimates the number of actual cases. We leverage delay embedding theorems of Whitney and Takens and ...
Artículo
A quantitative framework for exploring exit strategies from the COVID-19 lockdown
(Elsevier, 2020-11)
Following the highly restrictive measures adopted by many countries for combating the current pandemic, the number of individuals infected by SARS-CoV-2 and the associated number of deaths steadily decreased. This fact, ...
Artículo
Stability of traveling waves in a driven Frenkel–Kontorova model
(Elsevier, 2020-06)
In this work we revisit a classical problem of traveling waves in a damped Frenkel–Kontorova lattice driven by a constant external force. We compute these solutions as fixed points of a nonlinear map and obtain the ...
Artículo
Discrete embedded solitary waves and breathers in one-dimensional nonlinear lattices
(Elsevier, 2022-02)
For a one-dimensional linear lattice, earlier work has shown how to systematically construct a slowly- decaying linear potential bearing a localized eigenmode embedded in the continuous spectrum. Here, we extend this idea ...
Artículo
Vortex Pairs in the Discrete Nonlinear Schrödinger Equation
(IOP Publishing, 2020-03)
The aim of the present work is to examine the role of discreteness in the interaction of both co-winding and counter-winding vortices in the context of the nonlinear Schrodinger equation. Contrary to the well-known ...
Artículo
Mixed dispersion nonlinear Schrödinger equation in higher dimensions: Theoretical analysis and numerical computations
(IOP Publishing, 2022-06)
In the present work we provide a characterization of the ground states of a higher-dimensional quadratic-quartic model of the nonlinear Schrödinger class with a combination of a focusing biharmonic operator with either an ...