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arXiv 0912.3629cond-mat.quant-gas
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热云存在下玻色-爱因斯坦凝聚体的自由膨胀

Free expansion of a Bose-Einstein condensate at the presence of a thermal cloud

Krzysztof Gawryluk, Mirosław Brewczyk, Mariusz Gajda, Kazimierz Rzcażewski

摘要:

数值研究了非零温度下$^{87}$ Rb原子凝聚体的自由落体膨胀。在膨胀过程中,采用经典场近似来分离凝结物和热云。我们计算的径向和轴向宽度的扩展冷凝物,并找到明确的证据表明,热分量改变冷凝物的动力学。我们的结果与实验数据相对照。

英文摘要:

We investigate numerically the free-fall expansion of a $^{87}$Rb atoms condensate at nonzero temperatures. The classical field approximation is used to separate the condensate and the thermal cloud during the expansion. We calculate the radial and axial widths of the expanding condensate and find clear evidence that the thermal component changes the dynamics of the condensate. Our results are confronted against the experimental data.

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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