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arXiv 1607.06181cond-mat.quant-gas
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正方晶格上里德伯缀饰玻色气体的量子晶体学

Quantum crystallography of Rydberg-dressed Bose gases on a square lattice

Che-hsiu Hsueh, Wen-Chin Wu, Makoto Tsubota

摘要:

利用平均场Gros-Pitaevskii模型,数值研究了正方晶格上的里德伯缀饰玻色气体的量子晶体学相。对于较弱的晶格约束,随着阻挡半径的增加,基态相经历非晶、多晶和多晶现象,而当约束较强时,将形成具有特定填充因子的单晶。为了区别地表征这些相,还研究了结构函数。在这样的各向异性系统中,我们报告的第一个对角元素的超流分数张量应该是一个可测量的量,和各向异性参数可以被定义。此外,对于这样的结晶相,相互作用势可以在晶界出现的地方显现。

英文摘要:

We numerically investigate the quantum crystallographic phases of a Rydberg-dressed Bose gas loaded on a square lattice by using the mean-field Gross--Pitaevskii model. For a relatively weak lattice confinement, the phases of ground state undergo amorphism, polycrystal, and polymorphism following the increase of the blockade radius, and if the confinement is stronger, a single crystal with a specific filling factor will be formed. In order to distinctively characterize these phases, the structure function is also studied. In such an anisotropic system, we report that the first diagonal element of the superfluid-fraction tensor should be a measurable quantity, and an anisotropy parameter can be defined. In addition, for such crystallographic phases, the interaction potential can manifest where the grain boundaries appear.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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