304 citations · 990 across the 26 of their papers we have counts for
5 papers · 1 filter
Fractional-Period Excitations in Continuum Periodic Systems
H. E. Nistazakis, Mason A. Porter, P. G. Kevrekidis +3
We investigate the generation of fractional-period states in continuum periodic systems. As an example, we consider a Bose-Einstein condensate confined in an optical-lattice potent…
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…
Matter-wave solitons of collisionally inhomogeneous condensates
G. Theocharis, P. Schmelcher, P. G. Kevrekidis +1
We investigate the dynamics of matter-wave solitons in the presence of a spatially varying atomic scattering length and nonlinearity. The dynamics of bright and dark solitary waves…
Oscillations of dark solitons in trapped Bose-Einstein condensates
Dmitry E. Pelinovsky, D. J. Frantzeskakis, P. G. Kevrekidis
We consider a one-dimensional defocusing Gross--Pitaevskii equation with a parabolic potential. Dark solitons oscillate near the center of the potential trap and their amplitude de…
Stabilizing the Discrete Vortex of Topological Charge S=2
P. G. Kevrekidis, D. J. Frantzeskakis
We study the instability of the discrete vortex with topological charge S=2 in a prototypical lattice model and observe its mediation through the central lattice site. Motivated by…