Structural Instability of Vortices in Bose-Einstein Condensates
- 14 September 2001
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 87 (14) , 140403
- https://doi.org/10.1103/physrevlett.87.140403
Abstract
In this paper we study a gaseous Bose-Einstein condensate and show the following: (i) A minimum value of the interaction is needed for the existence of stable persistent currents. (ii) Vorticity is not a fundamental invariant of the system, as there exists a conservative mechanism which can destroy a vortex and change its sign. (iii) This mechanism is suppressed by strong interactions.Keywords
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