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  • Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011
  • (Optica Publishing Group, 2011),
  • paper I710

Suppression of Kelvon-induced decay of quantized vortices in trapped Bose-Einstein Condensates

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Abstract

We study the Kelvin mode excitations on a vortex line in a three-dimensional trapped Bose-Einstein condensate at finite temperature. Our stochastic Gross-Pitaevskii simulations show that the activation of these modes can be suppressed by tightening the confinement along the direction of the vortex line, leading to a strong suppression in the vortex decay rate as the system enters a regime of two dimensional vortex dynamics. As the system approached the transition temperature we find that the vortex decay rate is strongly sensitive to dimensionality and temperature, observing a large enhancement for quasi-two-dimensional traps.

© 2011 AOS

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