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Ring Dark Solitons and Vortex Necklaces in Bose-Einstein Condensates

G. Theocharis·D. J. Frantzeskakis·P. G. Kevrekidis·B. A. Malomed·Yuri S. Kivshar
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Abstract

We introduce the concept of ring dark solitons in Bose-Einstein condensates. We show that relatively shallow rings are not subject to the snake instability, but a deeper ring splits into a robust ring-like cluster of vortex pairs, which performs oscillations in the radial and azimuthal directions, following the dynamics of the original ring soliton.

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G. Theocharis, D. J. Frantzeskakis, P. G. Kevrekidis, B. A. Malomed, Yuri S. Kivshar. 2003-02-05. Ring Dark Solitons and Vortex Necklaces in Bose-Einstein Condensates. https://doi.org/10.1103/physrevlett.90.120403

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