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arXiv 2201.04132cond-mat.quant-gascond-mat.str-elquant-ph
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偶极玻色-哈伯德模型

The dipolar Bose-Hubbard model

Ethan Lake, Michael Hermele, T. Senthil

摘要:

我们研究了一个简单的d维立方晶格上的相互作用玻色子模型,该模型的动力学性质既保持玻色子总数又保持玻色子偶极矩。这个模型提供了一个简单的框架,在其中可以探索偶极守恒的几个显着的后果。作为化学势和跳跃强度的函数,该模型可以在有间隙的Mott绝缘相和各种类型的无间隙凝聚体之间进行调整。在大跳跃强度下实现的凝聚相,我们称之为玻色-爱因斯坦绝缘体,特别有趣:尽管有玻色凝聚,它是绝缘的,尽管是绝缘体,它是可压缩的。

英文摘要:

We study a simple model of interacting bosons on a d-dimensional cubic lattice whose dynamics conserves both total boson number and total boson dipole moment. This model provides a simple framework in which several remarkable consequences of dipole conservation can be explored. As a function of chemical potential and hopping strength, the model can be tuned between gapped Mott insulating phases and various types of gapless condensates. The condensed phase realized at large hopping strengths, which we dub a Bose-Einstein insulator, is particularly interesting: despite having a Bose condensate, it is insulating, and despite being an insulator, it is compressible.

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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