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Quantum Simulation

Influence of global features of a Bose-Einstein condensate on the vortex velocity

arXiv
Authors: H. M. Cataldo, D. M. Jezek

Year

2014

Paper ID

47384

Status

Preprint

Abstract Read

~2 min

Abstract Words

108

Citations

N/A

Abstract

We study the way in which the geometry of the trapping potential affects the vortex velocity in a Bose-Einstein condensate confined by a toroidal trap. We calculate the vortex precession velocity through a simple relationship between such a velocity and the gradient of the numerically obtained vortex energy. We observe that our results correspond very closely to the velocity calculated through time evolution simulations. However, we find that the estimates derived from available velocity field formulas present appreciable differences. To resolve such discrepancies, we further study the induced velocity field, analyzing the effect of global features of the condensate on such a field and on the precession velocity.

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  • We study the way in which the geometry of the trapping potential affects the vortex velocity in a Bose-Einstein condensate confined by a toroidal trap.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1409.6166 [2] arXiv https://arxiv.org/abs/1409.6166 [3] Publisher https://arxiv.org/abs/1409.6166

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