Spin-orbit-coupled Bose-Einstein-condensed atoms confined in annular potentials

Spin-orbit-coupled Bose-Einstein-condensed atoms confined in annular potentials

A spin-orbit-coupled Bose-Einstein-condensed cloud of atoms confined in an annular trapping potential shows a variety of phases that we investigate in the present study. Starting with the non-interacting problem, the homogeneous phase that is present in an untrapped system is replaced by a sinusoida...

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Veröffentlicht in:arXiv.org 2016-01
Hauptverfasser: Karabulut, E Ö, Malet, F, Fetter, A L, Kavoulakis, G M, Reimann, S M
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Annuli
Density distribution
Physics - Quantum Gases
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description A spin-orbit-coupled Bose-Einstein-condensed cloud of atoms confined in an annular trapping potential shows a variety of phases that we investigate in the present study. Starting with the non-interacting problem, the homogeneous phase that is present in an untrapped system is replaced by a sinusoidal density variation in the limit of a very narrow annulus. In the case of an untrapped system there is another phase with a striped-like density distribution, and its counterpart is also found in the limit of a very narrow annulus. As the width of the annulus increases, this picture persists qualitatively. Depending on the relative strength between the inter- and the intra-components, interactions either favor the striped phase, or suppress it, in which case either a homogeneous, or a sinusoidal-like phase appears. Interactions also give rise to novel solutions with a nonzero circulation.
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subjects Annuli
Density distribution
Physics - Quantum Gases
title Spin-orbit-coupled Bose-Einstein-condensed atoms confined in annular potentials
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