Structural instability of vortices in Bose-Einstein condensates

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In this paper we study a gaseous Bose-Einstein condensate (BEC) and show that: (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.
4 pages with 3 figures. Submitted to Phys. Rev. Lett

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Soft Condensed Matter, Pattern Formation and Solitons

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http://salesiana.dossiersoluciones.com/handle/123456789/17856

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0106210
 http://arxiv.org/abs/cond-mat/0106210
 Phys. Rev. Lett. 87, 140403 (2001)
 doi:10.1103/PhysRevLett.87.140403

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