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arXiv 0911.0764cond-mat.quant-gas
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环形阱中玻色-爱因斯坦凝聚体的转动

Rotation of a Bose-Einstein Condensate held under a toroidal trap

Amandine Aftalion, Peter Mason

摘要:

在\cite{bssd}实验的基础上,对置于谐波加高斯阱中的旋转玻色-爱因斯坦凝聚体进行了数值和解析研究。旋转频率$Ω$必须保持在谐振势的捕获频率之下,我们发现凝聚体具有包含三角形涡旋晶格的环形形状。随着$Ω$接近$ω$,冷凝物的宽度和中心孔内的循环变大。我们能够提供的冷凝物的大小和流通的最低朗道能级极限和费米极限的分析估计,提供与实验相一致的分析。

英文摘要:

The aim of this paper is to perform a numerical and analytical study of a rotating Bose Einstein condensate placed in a harmonic plus Gaussian trap, following the experiments of \cite{bssd}. The rotational frequency $Ω$ has to stay below the trapping frequency of the harmonic potential and we find that the condensate has an annular shape containing a triangular vortex lattice. As $Ω$ approaches $ω$, the width of the condensate and the circulation inside the central hole get large. We are able to provide analytical estimates of the size of the condensate and the circulation both in the lowest Landau level limit and the Thomas-Fermi limit, providing an analysis that is consistent with experiment.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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