Spontaneous crystallization and filamentation of solitons in dipolar condensates
Spontaneous crystallization and filamentation of solitons in dipolar condensates
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DOI：
10.1103/physreva.85.033618
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发表时间：
2011-07
影响因子：
2.9
通讯作者：
K. Lakomy;R. Nath;Luis Santos
中科院分区：
文献类型：
--
作者：
K. Lakomy;R. Nath;Luis Santos
即使在没有跳跃的情况下，位间相互作用在光学晶格中的极性气体中也起着至关重要的作用。我们发现，由于这些长程相互作用的准一维玻色-爱因斯坦凝聚体的不稳定堆栈开发相关的调制不稳定的非重叠网站。有趣的是，这种密度模式可能会自发地演变成孤子细丝或孤子晶体，这是第一次在超冷气体中产生。这些自组装结构可以在目前的实验features内的现实条件下观察到。
Inter-site interactions play a crucial role in polar gases in optical lattices even in the absence of hopping. We show that due to these long-range interactions a destabilized stack of quasi-one dimensional Bose-Einstein condensates develops a correlated modulational instability in the non-overlapping sites. Interestingly, this density pattern may evolve spontaneously into soliton filaments or a crystal of solitons that can be so created for the first time in ultra-cold gases. These self-assembled structures may be observed under realistic conditions within current experimental feasibilities.