70 citations · 215 across the 12 of their papers we have counts for
8 papers · 1 filter
Nonlinear Anti-(Parity-Time) symmetric dimer
A. S. Rodrigues, R. M. Ross, V. V. Konotop +2
In the present work we propose a nonlinear anti--symmetric dimer, that at the linear level has been experimentally created in the realm of electric circuit resonators…
N-break states in a chain of nonlinear oscillators
A. S. Rodrigues, P. G. Kevrekidis, M. Dobson
In the present work we explore a pre-stretched oscillator chain where the nodes interact via a pairwise Lennard-Jones potential. In addition to a homogeneous solution, we identify…
A Korteweg-de Vries description of dark solitons in polariton superfluids
R. Carretero-González, J. Cuevas-Maraver, D. J. Frantzeskakis +3
We study the dynamics of dark solitons in an incoherently pumped exciton-polariton condensate by means of a system composed by a generalized open-dissipative Gross-Pitaevskii equat…
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…
Interaction of discrete nonlinear Schrödinger solitons with a linear lattice impurity
Valeriy A. Brazhnyi, Chandroth P. Jisha, A. S. Rodrigues
The interaction of moving discrete solitons with a linear Gaussian defect is investigated. Solitons with profiles varying from hyperbolic secant to exponentially localized are cons…
PT-symmetric Double Well Potentials Revisited: Bifurcations, Stability and Dynamics
A. S. Rodrigues, K. Li, V. Achilleos +3
In this work we analyze PT-symmetric double-well potentials based on a two-mode picture. We reduce the problem into a PT-symmetric dimer and illustrate that the latter has effectiv…