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arXiv · 1311.2087

Dark soliton in quasi-one-dimensional Bose-Einstein condensates with a Gaussian trap

H. L. C. Couto·W. B. Cardoso
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Abstract

In this paper we study dark solitons in quasi-one-dimensional Bose-Einstein condensates (BECs) in presence of an anharmonic external potential. The theoretical model is based on the Muñoz-Mateo and Delgado (MMD) equation that describes cigar-shaped BECs with repulsive interatomic interactions. Since MMD equation presents a nonpolynomial form, the soliton-sound recombination cannot display the same pattern presented in the cubic model. We perform numerical simulations to compare both cases.

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H. L. C. Couto, W. B. Cardoso. 2013-11-08. Dark soliton in quasi-one-dimensional Bose-Einstein condensates with a Gaussian trap. https://arxiv.org/abs/1311.2087

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