77 citations · 117 across the 2 of their papers we have counts for
5 papers
Higher-order effects and ultra-short solitons in left-handed metamaterials
N. L. Tsitsas, N. Rompotis, I. Kourakis +2
Starting from Maxwell's equations, we use the reductive perturbation method to derive a second-order and a third-order nonlinear Schroedinger equation, describing ultra-short solit…
Soliton oscillations in collisionally inhomogeneous attractive Bose-Einstein condensates
P. Niarchou, G. Theocharis, P. G. Kevrekidis +2
We investigate bright matter-wave solitons in the presence of a spatially varying nonlinearity. It is demonstrated that a translation mode is excited due to the spatial inhomogenei…
Trapping and transmission of matter-wave solitons in a collisionally inhomogeneous environment
G. Theocharis, P. Schmelcher, P. G. Kevrekidis +1
We investigate bright matter-wave solitons in the presence of a spatially varying scattering length. It is demonstrated that, even in the absence of any external trapping potential…
Nonlinear Lattices Generated from Harmonic Lattices with Geometric Constraints
S. Takeno, S. V. Dmitriev, P. G. Kevrekidis +1
Geometrical constraints imposed on higher dimensional harmonic lattices generally lead to nonlinear dynamical lattice models. Helical lattices obtained by such a procedure are show…
Modulational Instability in Bose-Einstein Condensates under Feshbach Resonance Management
Z. Rapti, G. Theocharis, P. G. Kevrekidis +1
We investigate the modulational instability of nonlinear Schr{ö}dinger equations with periodic variation of their coefficients. In particular, we focus on the case of the recently…