Roton spectroscopy in a harmonically trapped dipolar Bose-Einstein condensate
Roton spectroscopy in a harmonically trapped dipolar Bose-Einstein condensate
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DOI：
10.1103/physreva.86.021604
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发表时间：
2012-08-15
影响因子：
2.9
通讯作者：
Bisset, R. N.
中科院分区：
文献类型：
--
作者：
Blakie, P. B.;Baillie, D.;Bisset, R. N.
我们研究了一个具有偶极-偶极相互作用的谐振陷波玻色-爱因斯坦凝聚体。我们表明，可以使用布拉格光谱测量的静态和动态结构因子清楚地揭示了旋子谱。我们开发和验证的理论基础上的局部密度近似的动态结构因子。
We study a harmonically trapped Bose-Einstein condensate with dipole-dipole interactions in a regime where a roton spectrum emerges. We show that the roton spectrum is clearly revealed in the static and dynamic structure factors which can be measured using Bragg spectroscopy. We develop and validate a theory based on the local-density approximation for the dynamic structure factor.