標題: Physical Realization of von Neumann Lattices in Rotating Bose Gases with Dipole Interatomic Interactions
作者: Cheng, Szu-Cheng
Jheng, Shih-Da
物理研究所
Institute of Physics
公開日期: 22-八月-2016
摘要: This paper reports a novel type of vortex lattice, referred to as a bubble crystal, which was discovered in rapidly rotating Bose gases with long-range interactions. Bubble crystals differ from vortex lattices which possess a single quantum flux per unit cell, while atoms in bubble crystals are clustered periodically and surrounded by vortices. No existing model is able to describe the vortex structure of bubble crystals; however, we identified a mathematical lattice, which is a subset of coherent states and exists periodically in the physical space. This lattice is called a von Neumann lattice, and when it possesses a single vortex per unit cell, it presents the same geometrical structure as an Abrikosov lattice. In this report, we extend the von Neumann lattice to one with an integral number of flux quanta per unit cell and demonstrate that von Neumann lattices well reproduce the translational properties of bubble crystals. Numerical simulations confirm that, as a generalized vortex, a von Neumann lattice can be physically realized using vortex lattices in rapidly rotating Bose gases with dipole interatomic interactions.
URI: http://dx.doi.org/10.1038/srep31801
http://hdl.handle.net/11536/134079
ISSN: 2045-2322
DOI: 10.1038/srep31801
期刊: SCIENTIFIC REPORTS
Volume: 6
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