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Ring Dark Solitons and Vortex Necklaces in Bose-Einstein Condensates

2003; American Physical Society; Volume: 90; Issue: 12 Linguagem: Inglês

10.1103/physrevlett.90.120403

1092-0145

G. Theocharis, D. J. Frantzeskakis, P. G. Kevrekidis, Boris A. Malomed, Yuri S. Kivshar,

Strong Light-Matter Interactions

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 ringlike cluster of vortex pairs, which performs oscillations in the radial and azimuthal directions, following the dynamics of the original ring soliton.