56 citations · 436 across the 25 of their papers we have counts for
22 papers · 1 filter
Scattering-induced splitting of solitons in the discrete NLS equation with saturable nonlinearity
J. F. Tsoplefack, F. Palmero, J. Cuevas-Maraver +2
We study systematically the scattering of solitons on localized impurities in the discrete nonlinear Schrödinger (DNLS) equation with a saturable nonlinearity. We show that, apart…
Discrete embedded solitary waves and breathers in one-dimensional nonlinear lattices
Faustino Palmero, Mario I. Molina, Jesús Cuevas-Maraver +1
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 contin…
Nonlinear edge modes in a honeycomb electrical lattice near the Dirac points
F. Palmero, L. Q. English, J. Cuevas-Maraver +1
We examine - both experimentally and numerically - a two-dimensional nonlinear driven electrical lattice with honeycomb structure. Drives are considered over a range of frequencies…
Experimental and numerical observation of dark and bright discrete solitons in the band-gap of a diatomic-like electrical lattice
F. Palmero, L. Q. English, Xuan-Lin Chen +3
We observe dark and bright intrinsic localized modes (ILMs) or discrete breathers (DB) experimentally and numerically in a diatomic-like electrical lattice. The generation of dark…
Impulse-induced localized nonlinear modes in an electrical lattice
F. Palmero, J. Cuevas-Maraver, L. Q. English +1
Intrinsic localized modes, also called discrete breathers, can exist under certain conditions in one-dimensional nonlinear electrical lattices driven by external harmonic excitatio…
Impulse-induced generation of stationary and moving discrete breathers in nonlinear oscillator networks
J. Cuevas-Maraver, R. Chacón, F. Palmero
We study discrete breathers in prototypical nonlinear oscillator networks subjected to non-harmonic zero-mean periodic excitations. We show how the generation of stationary and mov…
Multifrequency and edge breathers in the discrete sine-Gordon system via subharmonic driving: theory, computation and experiment
F. Palmero, J. Han, L. Q. English +2
We consider a chain of torsionally-coupled, planar pendula shaken horizontally by an external sinusoidal driver. It has been known that in such a system, theoretically modeled by t…
From Nodeless Clouds and Vortices to Gray Rings and Symmetry-Broken States in Two-Dimensional Polariton Condensates
A. S. Rodrigues, P. G. Kevrekidis, R. Carretero-González +3
We consider the existence, stability and dynamics of the nodeless state and fundamental nonlinear excitations, such as vortices, for a quasi-two-dimensional polariton condensate in…
Nonlinear localized modes in two-dimensional electrical lattices
L. Q. English, F. Palmero, J. F. Stormes +3
We report the observation of spontaneous localization of energy in two spatial dimensions in the context of nonlinear electrical lattices. Both stationary and traveling self-locali…
Discrete breathers in a nonlinear electric line: Modeling, Computation and Experiment
F. Palmero, L. Q. English, J. Cuevas +2
We study experimentally and numerically the existence and stability properties of discrete breathers in a periodic nonlinear electric line. The electric line is composed of single…
Lower and upper estimates on the excitation threshold for breathers in DNLS lattices
J. Cuevas, N. I. Karachalios, F. Palmero
We propose analytical lower and upper estimates on the excitation threshold for breathers (in the form of spatially localized and time periodic solutions) in DNLS lattices with pow…
Solitons in one-dimensional nonlinear Schrödinger lattices with a local inhomogeneity
F. Palmero, R. Carretero-González, J. Cuevas +2
In this paper we analyze the existence, stability, dynamical formation and mobility properties of localized solutions in a one-dimensional system described by the discrete nonlinea…
Classical and quantum nonlinear localized excitations in discrete systems
F. R. Romero, J. F. R. Archilla, F. Palmero +4
Discrete breathers, or intrinsic localized modes, are spatially localized, time--periodic, nonlinear excitations that can exist and propagate in systems of coupled dynamical units.…
Quantum breathers in an attractive fermionic Hubbard model
J. C. Eilbeck, F. Palmero
In one-dimensional translationally invariant anharmonic lattices, an extended Bloch state with two or more strongly correlated particles is usually called a quantum breather. Here…
Trapping in quantum chains
J. C. Eilbeck, F. Palmero
A quantum breather on a translationally invariant one-dimensional anharmonic lattice is an extended Bloch state with two or more particles in a strongly correlated state. We discus…
Charge transport in poly(dG)-poly(dC) and poly(dA)-poly(dT) DNA polymers
D. Hennig, E. B. Starikov, J. F. R. Archilla +1
We investigate the charge transport in synthetic DNA polymers built up from single types of base pairs. In the context of a polaron-like model, for which an electronic tight-bindin…
Effect of base-pair inhomogeneities on charge transport along DNA mediated by twist and radial polarons
F. Palmero, J. F. R. Archilla, D. Hennig +1
Some recent results for a three--dimensional, semi--classical, tight--binding model for DNA show that there are two types of polarons, named radial and twist polarons, that can tra…
Interaction of moving breathers with an impurity
J. Cuevas, F. Palmero, J. F. R. Archilla +1
We analyze the influence of an impurity in the evolution of moving discrete breathers in a Klein--Gordon chain with non-weak nonlinearity. Three different behaviours can be observe…
Nonlinear charge transport in DNA mediated by twist modes
F. Palmero, J. F. R. Archilla, D. Hennig +1
Recent works on localized charge transport along DNA, based on a three--dimensional, tight--binding model (Eur. Phys. J. B 30:211, 2002; Phys. D 180:256, 2003), suggest that charge…
Breathers in a system with helicity and dipole interaction
B. Sanchez-Rey, J. F. R. Archilla, F. Palmero +1
Recent papers that have studied variants of the Peyrard-Bishop model for DNA, have taken into account the long range interaction due to the dipole moments of the hydrogen bonds bet…
Moving discrete breathers in a Klein--Gordon chain with an impurity
J. Cuevas, F. Palmero, J. F. R. Archilla +1
We analyze the influence of an impurity in the movement of discrete breathers in Klein--Gordon chains. We observe that the moving breather can cross the impurity, can be reflected…
Moving breathers in a bent DNA-related model
J. Cuevas, F. Palmero, J. F. R. Archilla +1
We study the properties of moving breathers in a bent DNA-related model with short range interaction, due to the stacking of the base pairs, and long range interaction, due to the…