304 citations · 2.4k across the 32 of their papers we have counts for
6 papers · 1 filter
Vortices in a Bose-Einstein condensate confined by an optical lattice
P. G. Kevrekidis, R. Carretero-González, G. Theocharis +2
We investigate the dynamics of vortices in repulsive Bose-Einstein condensates in the presence of an optical lattice (OL) and a parabolic magnetic trap. The dynamics is sensitive t…
Stability of dark solitons in a Bose-Einstein condensate trapped in an optical lattice
P. G. Kevrekidis, R. Carretero-González, G. Theocharis +2
We investigate the stability of dark solitons (DSs) in an effectively one-dimensional Bose-Einstein condensate in the presence of the magnetic parabolic trap and an optical lattice…
Avoiding Infrared Catastrophes in Trapped Bose-Einstein Condensates
P. G. Kevrekidis, G. Theocharis, D. J. Frantzeskakis +1
This paper is concerned with the long wavelength instabilities (infrared catastrophes) occurring in Bose-Einstein condensates (BECs). We examine the modulational instability in ``c…
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…
On the modulational stability of Gross-Pitaevskii type equations in 1+1 dimensions
G. Theocharis, Z. Rapti, P. G. Kevrekidis +2
The modulational stability of the nonlinear Schr{ö}dinger (NLS) equation is examined in the case with a quadratic external potential. This study is motivated by recent experimental…
On the modulational stability of Gross-Pittaevskii type equations in 1+1 dimensions
Z. Rapti, P. G. Kevrekidis, V. V. Konotop
The modulational stability of the nonlinear Schr{ö}dinger (NLS) equation is examined in the cases with linear and quadratic external potential. This study is motivated by recent ex…