Theory of nonlinear matter waves in optical lattices

VA Brazhnyi, VV Konotop - Modern Physics Letters B, 2004 - World Scientific
We consider several effects of the matter wave dynamics which can be observed in Bose–
Einstein condensates embedded into optical lattices. For low-density condensates, we …

Vortices in Bose–Einstein condensates: some recent developments

PG Kevrekidis, R Carretero-González… - … Physics Letters B, 2004 - World Scientific
In this brief review we summarize a number of recent developments in the study of vortices
in Bose–Einstein condensates, a topic of considerable theoretical and experimental interest …

Discrete quantum droplets in one-dimensional binary Bose–Einstein condensates

A Boudjemâa, KM Elhadj - Chaos, Solitons & Fractals, 2023 - Elsevier
We discuss the propagation and interaction of discrete quantum droplets in one-dimensional
binary Bose mixtures by variationally and numerically solving the underlying generalized …

Multistable solitons in the cubic–quintic discrete nonlinear Schrödinger equation

R Carretero-González, JD Talley, C Chong… - Physica D: Nonlinear …, 2006 - Elsevier
We analyze the existence and stability of localized solutions in the one-dimensional discrete
nonlinear Schrödinger (DNLS) equation with a combination of competing self-focusing cubic …

Discrete and continuum composite solitons in Bose-Einstein condensates with the Rashba spin-orbit coupling in one and two dimensions

H Sakaguchi, BA Malomed - Physical Review E, 2014 - APS
We introduce one-and two-dimensional (1D and 2D) continuum and discrete models for the
two-component BEC, with the spin-orbit (SO) coupling of the Rashba type between the …

Multistable solitons in higher-dimensional cubic–quintic nonlinear Schrödinger lattices

C Chong, R Carretero-González, BA Malomed… - Physica D: Nonlinear …, 2009 - Elsevier
We study the existence, stability, and mobility of fundamental discrete solitons in two-and
three-dimensional nonlinear Schrödinger lattices with a combination of cubic self-focusing …

Bright solitons in the one-dimensional discrete Gross-Pitaevskii equation with dipole-dipole interactions

G Gligorić, A Maluckov, L Hadžievski… - Physical Review A—Atomic …, 2008 - APS
A model of the Bose-Einstein condensate of dipolar atoms, confined in a combination of a
cigar-shaped trap and deep optical lattice acting in the axial direction, is introduced, taking …

Three-dimensional solitary waves and vortices in a discrete nonlinear Schrödinger lattice

PG Kevrekidis, BA Malomed, DJ Frantzeskakis… - Physical review …, 2004 - APS
In a benchmark dynamical-lattice model in three dimensions, the discrete nonlinear
Schrödinger equation, we find discrete vortex solitons with various values of the topological …

Homoclinic nonlinear band gap transmission threshold in discrete optical waveguide arrays

ABT Motcheyo, JDT Tchameu, MS Siewe… - … in Nonlinear Science …, 2017 - Elsevier
We show for the first time that supratransmission threshold can be found in discrete
nonlinear Schrödinger equation modelling the optical waveguide arrays with Kerr …

[HTML][HTML] Breather excitations on the one-dimensional quantum droplet

LZ Lv, P Gao, ZY Yang, WL Yang - Physics Letters A, 2022 - Elsevier
We propose a possible way to excite breathers on the one-dimensional quantum droplets,
which benefit from the introduction of quantum fluctuation and locally exhibit the …