Soliton oscillations in collisionally inhomogeneous attractive Bose-Einstein condensates
Other Condensed Matter
2009-11-13 v1
Abstract
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 inhomogeneity and its frequency is derived analytically and also studied numerically. Both cases of purely one-dimensional and ``cigar-shaped'' condensates are studied by means of different mean-field models, and the oscillation frequencies of the pertinent solitons are found and compared with the results obtained by the linear stability analysis.Numerical results are shown to be in very good agreement with the corresponding analytical predictions.
Keywords
Cite
@article{arxiv.0707.2861,
title = {Soliton oscillations in collisionally inhomogeneous attractive Bose-Einstein condensates},
author = {P. Niarchou and G. Theocharis and P. G. Kevrekidis and P. Schmelcher and D. J. Frantzeskakis},
journal= {arXiv preprint arXiv:0707.2861},
year = {2009}
}