Ring dark solitons and vortex necklaces in Bose-Einstein condensates

被引:177
作者
Theocharis, G [1 ]
Frantzeskakis, DJ
Kevrekidis, PG
Malomed, BA
Kivshar, YS
机构
[1] Univ Athens, Dept Phys, Athens 15784, Greece
[2] Univ Massachusetts, Dept Math & Stat, Amherst, MA 01003 USA
[3] Tel Aviv Univ, Fac Engn, Dept Interdisciplinary Studies, IL-69978 Tel Aviv, Israel
[4] Australian Natl Univ, Res Sch Phys Sci & Engn, Nonlinear Phys Grp, Canberra, ACT 0200, Australia
关键词
D O I
10.1103/PhysRevLett.90.120403
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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.
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页数:4
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