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arXiv 0806.2012cond-mat.stat-mechcond-mat.mes-hall
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均匀阻挫玻色子约瑟夫森结阵列

Uniformly frustrated bosonic Josephson-junction arrays

Kenichi Kasamatsu

摘要:

我们推导了一个描述二维约瑟夫森结阵列的均匀阻挫$XY$模型,该阵列由旋转的玻色-爱因斯坦凝聚体组成,被谐波阱和共转的深光晶格捕获。谐波陷阱使模型的耦合常数具有非均匀的抛物线关系。我们研究了基态通过蒙特卡罗模拟在很宽的范围内的挫折参数$f$,揭示了丰富多样的涡旋图案。

英文摘要:

We derive a uniformly frustrated $XY$ model that describes two-dimensional Josephson-junction arrays consisting of rotating Bose-Einstein condensates trapped by both a harmonic trap and a corotating deep optical lattice. The harmonic trap makes the coupling constant of the model have a nonuniform parabolic dependance. We study the ground state through Monte Carlo simulations in a wide range of the frustration parameter $f$, revealing a rich variety of vortex patterns.

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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