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Listar por autor "James, Guillaume"
Mostrando ítems 1-10 de 10
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Artículo
Approximation of solitons in the discrete NLS equation
Cuevas-Maraver, Jesús; James, Guillaume; Kevrekidis, Panayotis G.; Malomed, Boris A.; Sánchez-Rey, Bernardo (World Scientific, 2008)We study four diferent approximations for finding the profile of discrete solitons in the one-dimensional Discrete Nonlinear ...
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Ponencia
Breathers and surface modes in oscillator chains with Hertz ian interactions
James, Guillaume; Cuevas-Maraver, Jesús; Kevrekidis, Panayotis G. (NOLTA, 2012)We study localized waves in chains of oscillators coupled by Hertzian interactions and trapped in local potentials. This ...
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Ponencia
Breathers in FPU systems, near and far from the phonon band
Sánchez-Rey, Bernardo; Archilla, Juan F. R.; James, Guillaume; Cuevas-Maraver, Jesús (World Scientific, 2003) -
Artículo
Breathers in inhomogeneous nonlinear lattices : an analysis via centre manifold reduction
James, Guillaume; Sánchez-Rey, Bernardo; Cuevas-Maraver, Jesús (2009)We consider an infinite chain of particles linearly coupled to their nearest neighbors and subject to an anharmonic local ...
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Artículo
Breathers in oscillator chains with Hertzian interactions
James, Guillaume; Kevrekidis, Panayotis G.; Cuevas-Maraver, Jesús (2013)We prove nonexistence of breathers (spatially localized and time-periodic oscillations) for a class of Fermi-Pasta-Ulam ...
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Artículo
Bright and dark breathers in Fermi-Pasta-Ulam lattices
Sánchez-Rey, Bernardo; James, Guillaume; Cuevas-Maraver, Jesús; Archilla, Juan F. R. (2004)In this paper we study the existence and linear stability of bright and dark breathers in one-dimensional FPU lattices. ...
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Artículo
Existence, stability and spatio-temporal dynamics of time-quasiperiodic solutions on a finite background in discrete nonlinear Schrödinger models
Charalampidis, E. G.; James, Guillaume; Cuevas-Maraver, Jesús; Hennig, Dirk; Karachalios, Nikos I.; Kevrekidis, Panayotis G. (Elsevier, 2024-07)In the present work we explore the potential of models of the discrete nonlinear Schrödinger (DNLS) type to support spatially ...
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Artículo
Floquet analysis of Kuznetsov-Ma breathers: A path towards spectral stability of rogue waves
Cuevas-Maraver, Jesús; Kevrekidis, Panayotis G.; Frantzeskakis, Dimitri J.; Karachalios, Nikolaos I.; Haragus, Mariana; James, Guillaume (American Physical Society, 2017)In the present work, we aim at taking a step towards the spectral stability analysis of Peregrine solitons, i.e., wave ...
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Ponencia
Vortex solutions of the defocusing discrete nonlinear Schroedinger equation
Cuevas-Maraver, Jesús; James, Guillaume; Kevrekidis, Panayotis G.; Law, Kody J. H. (American Institute of Physics, 2009)We consider the existence, stability and dynamical evolution of dark vortex states in the two-dimensional defocusing DNLS ...
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Artículo
Vortex solutions of the discrete Gross-Pitaevskii equation starting from the anti-continuum limit
Cuevas-Maraver, Jesús; James, Guillaume; Kevrekidis, Panayotis G.; Law, Kody J. H. (2009)In this paper, we consider the existence, stability and dynamical evolution of dark vortex states in the two-dimensional ...