Publication Date

2007

Journal or Book Title

PHYSICAL REVIEW A

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.

Comments

This is the pre-published version harvested from arXiv. The published version is located at http://pra.aps.org/abstract/PRA/v76/i2/e023615

Pages

-

Volume

76

Issue

2

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