Beats and expansion of two-component Bose-Einstein condensates in the Thomas-Fermi limit
Beats and expansion of two-component Bose-Einstein condensates in the Thomas-Fermi limit
复制标题
托马斯-费米极限下二组分玻色-爱因斯坦凝聚体的节拍和膨胀
DOI：
10.1088/0953-4075/47/21/215007
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
J. Q. Quach
中科院分区：
文献类型：
--
作者：
R. A. Henry;J. Q. Quach;C.-H. Su;A. D. Greentree;A. M. Martin;J. Q. Quach
多组分玻色-爱因斯坦凝聚体（BEC）的一个独特特征是集体振荡中拍频的可能性。我们分析确定这个拍频的双组分BEC在一维。我们还表明，在忽略量子压力的情况下，高斯-费米近似很好地描述了从谐波阱中释放的两组分凝聚体的膨胀。
A unique feature of multi-component Bose–Einstein condensates (BECs) is the possibility of beating frequencies in collective oscillations. We analytically determine this beating frequency for the two-component BEC in one-dimension. We also show that the Thomas–Fermi approximation, where the quantum pressure is neglected, describes well the expansion of the two-component condensate released from an harmonic trap.