Física Aplicada I: Envíos recientes
Mostrando ítems 781-800 de 890
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Multibreathers in Klein-Gordon chains with interactions beyond nearest neighbors
(2013)We study the existence and stability of multibreathers in Klein-Gordon chains with interactions that are not restricted ...
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Dark lattice solitons in one-dimensional waveguide arrays with defocusing saturable nonlinearity and alternating couplings
(2012)In the present work, we examine “binary” waveguide arrays, where the coupling between adjacent sites alternates between ...
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Beating dark-dark solitons in Bose-Einstein condensates
(2012)Motivated by recent experimental results, we study beating dark-dark solitons as a prototypical coherent structure that ...
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Multibreather and vortex breather stability in Klein–Gordon lattices: equivalence between two different approaches
(2011)In this work, we revisit the question of stability of multibreather configurations, i.e. discrete breathers with multiple ...
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Josephson tunnelling of dark solitons in a double-well potential
(2011)We study the dynamics of matter waves in an effectively one-dimensional Bose-Einstein condensate in a double-well potential. ...
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Dark-bright discrete solitons: a numerical study of existence, stability and dynamics
(2011)the present work, we numerically explore the existence and stability properties of different types of configurations of ...
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Stability of non-time-reversible phonobreathers
(2011)Non-time reversible phonobreathers are non-linear waves that can transport energy in coupled oscillator chains by means ...
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Energy thresholds for the existence of breather solutions and traveling waves on lattices
(2010)We discuss the existence of breathers and of energy thresholds for their formation in DNLS lattices with linear and ...
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Lower and upper estimates on the excitation threshold for breathers in DNLS lattices
(2009)We propose analytical lower and upper estimates on the excitation threshold for breathers (in the form of spatially localized ...
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Interlaced solitons and vortices in coupled DNLS lattices
(2009)In the present work, we propose a new set of coherent structures that arise in nonlinear dynamical lattices with more than ...
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Moving breather collisions in Klein-Gordon chains of oscillators
(2009)We investigate the collisions of moving breathers, with the same frequency, in three different Klein-Gordon chains of ...
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Vortex solutions of the discrete Gross-Pitaevskii equation starting from the anti-continuum limit
(2009)In this paper, we consider the existence, stability and dynamical evolution of dark vortex states in the two-dimensional ...
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Solitons for the cubic-quintic nonlinear Schrödinger equation with time and space modulated coefficients
(2009)In this paper, we construct, by means of similarity transformations, explicit solutions to the cubic–quintic nonlinear ...
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Breathers in inhomogeneous nonlinear lattices : an analysis via centre manifold reduction
(2009)We consider an infinite chain of particles linearly coupled to their nearest neighbors and subject to an anharmonic local ...
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Discrete solitons in nonlinear Schrödinger lattices with a power-law nonlinearity
(2009)We study the discrete nonlinear Schrödinger lattice model with the onsite nonlinearity of the general form, |u|2σu|u|2σu. ...
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Travelling solitary waves in the discrete Schrödinger equation with saturable nonlinearity : Existence, stability and dynamics
(2008)The present work examines in detail the existence, stability and dynamics of travelling solitary waves in a Schrödinger ...
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Thresholds for breather solutions of the discrete nonlinear Schrödinger equation with saturable and power nonlinearity
(2008)We consider the question of existence of periodic solutions (called breather solutions or discrete solitons) for the ...
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Discrete moving breather collisions in a Klein-Gordon chain of oscillators
(2008)We study the collisions of moving breathers with the same frequency, traveling with opposite directions within a Klein–Gordon ...
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Interaction of moving discrete breathers with vacancies
(2006)In this paper a Frenkel–Kontorova model with a nonlinear int eraction potential is used to describe a vacancy defect in ...
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Effect of the introduction of Impurities on the stability properties of multibreathers at low coupling
(2005)Using a theorem dubbed the multibreather stability theorem (Archilla J F R et al 2003 Physica D 180 235) we have obtained ...