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arXiv 0910.4918cond-mat.quant-gascond-mat.other
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玻色-爱因斯坦凝聚体中Skyrmion的产生和探测

Creation and detection of skyrmions in a Bose-Einstein condensate

L. S. Leslie, A. Hansen, K. C. Wright, B. M. Deutsch, N. P. Bigelow

摘要:

我们首次在自旋为2的玻色-爱因斯坦凝聚体中实现了二维Skyrmions和半Skyrmions的实验研究。在云上,skyrmion的局部自旋通过π角(和半skyrmion通过π/2角)的连续旋转由三个自旋状态的空间分布证实,这三个自旋状态由el矢量的弯曲角参数化。通过物质波干涉证实了Skyrmions的缠绕数w =(0,1,2)。

英文摘要:

We present the first experimental realization and characterization of two-dimensional skyrmions and half-skyrmions in a spin-2 Bose-Einstein condensate. The continuous rotation of the local spin of the skyrmion through an angle of pi (and half-skyrmion through an angle of pi/2) across the cloud is confirmed by the spatial distribution of the three spin states as parameterized by the bending angle of the ell-vector. The winding number, w = (0, 1, 2), of the skyrmions is confirmed through matter-wave interference.

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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