121 citations · 763 across the 28 of their papers we have counts for
23 papers · 1 filter
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…
PT-Symmetric Dimer of Coupled Nonlinear Oscillators
J. Cuevas, P. G. Kevrekidis, A. Saxena +1
We provide a systematic analysis of a prototypical nonlinear oscillator system respecting PT-symmetry i.e., one of them has gain and the other an equal and opposite amount of loss.…
Coupled backward- and forward-propagating solitons in a composite right/left-handed transmission line
G. P. Veldes, J. Cuevas, P. G. Kevrekidis +1
We study the coupling between backward- and forward-propagating wave modes, with the same group velocity, in a composite right/left-handed nonlinear transmission line. Using an asy…
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…
Multibreathers in Klein-Gordon chains with interactions beyond nearest neighbors
V. Koukouloyannis, P. G. Kevrekidis, J. Cuevas +1
We study the existence and stability of multibreathers in Klein-Gordon chains with interactions that are not restricted to nearest neighbors. We provide a general framework where s…
Dark lattice solitons in one-dimensional waveguide arrays with defocusing saturable nonlinearities and alternating couplings
Andrey Kanshu, Christian E. Rüter, Detlef Kip +2
In the present work, we examine "binary" waveguide arrays, where the coupling between adjacent sites alternates between two distinct values and and a saturable nonlinea…