论文标题
偶极玻色纸模型
The dipolar Bose-Hubbard model
论文作者
论文摘要
我们研究了在D维立方晶格上相互作用的玻色子的简单模型，该玻色子的动力学既可以保存总玻色子数和总玻色子偶极矩。该模型提供了一个简单的框架，在该框架中，可以探索偶极子保护的几个显着后果。作为化学潜力和跳高强度的函数，可以在毛发隔离阶段和各种类型的无间隙冷凝物之间调整模型。我们将其配置为Bose-Einstein绝缘子的大量跳跃强度实现的凝聚阶段特别有趣：尽管玻璃凝结，但它是绝缘的，尽管是绝缘子，但它是可压缩的。
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.
