Effects of dipole–dipole interaction between cigar-shaped BECs of cold alkali atoms: towards inverse-squared interactions
Effects of dipole–dipole interaction between cigar-shaped BECs of cold alkali atoms: towards inverse-squared interactions
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DOI：
10.1088/0953-8984/26/30/305402
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发表时间：
2011-08
期刊：
影响因子：
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通讯作者：
Yue Yu;Zhuxi Luo;Ziqiang Wang
中科院分区：
文献类型：
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作者：
Yue Yu;Zhuxi Luo;Ziqiang Wang
我们发现，雪茄形玻色-爱因斯坦凝聚体（BEC）中万尼尔模式之间的偶极-偶极耦合显着增强，而短程耦合则受到强烈抑制。因此，偶极-偶极相互作用可以成为超冷碱金属玻色原子之间的主要相互作用。在雪茄形 BEC 的长长度限制下，所得到的有效一维模型具有有效的平方反比相互作用势，即卡洛杰罗-萨瑟兰势，它在当代物理学的许多领域中发挥着基础作用；但其直接实验实现长期以来一直是一个挑战。我们建议在超冷碱金属玻色原子中实现卡洛杰罗-萨瑟兰模型，并研究偶极子相互作用的影响。
We show that the dipole–dipole coupling between Wannier modes in cigar-shaped Bose–Einstein condensates (BECs) is significantly enhanced while the short-range coupling is strongly suppressed. As a result, the dipole–dipole interaction can become the dominant interaction between ultracold alkali Bose atoms. In the long length limit of a cigar-shaped BEC, the resulting effective one-dimensional models possess an effective inverse squared interacting potential, the Calogero–Sutherland potential, which plays a fundamental role in many fields of contemporary physics; but its direct experimental realization has been a challenge for a long time. We propose to realize the Calogero–Sutherland model in ultracold alkali Bose atoms and study the effects of the dipole–dipole interaction.