论文标题
在多体相互作用的玻色 - 哈伯德模型中的两体排斥绑定对
Two-body repulsive bound pairs in multi-body interacting Bose-Hubbard model
论文作者
论文摘要
我们在二维光学晶格上研究了多体相互作用玻色子的系统，并在玻色 - 哈伯德模型的背景下分析了结合的骨配对的形成。假设具有反击性的两体相互作用，我们获得了相图的Mott绝缘体裂片之间的区域的签名，以进行高阶局部相互作用的不同选择。考虑到涉及局部多体相互作用的最通用的玻色 - 哈伯德模型，我们利用群集平均场理论方法研究了基态特性，并通过复杂的无限无限的无限纠缠的对配对状态计算进一步确认结果。通过使用各种订单参数，我们表明，高阶相互作用的选择可以导致两个不同的Mott Lobes之间的系统中的超级流相。 We also analyze the effect of temperature and density-dependent tunneling to establish the stability of the PSF phase.
We study the system of multi-body interacting bosons on a two dimensional optical lattice and analyze the formation of bound bosonic pairs in the context of the Bose-Hubbard model. Assuming a repulsive two-body interaction we obtain the signatures of pair formation in the regions between the Mott insulator lobes of the phase diagram for different choices of higher order local interactions. Considering the most general Bose-Hubbard model involving local multi-body interactions we investigate the ground state properties utilizing the cluster mean-field theory approach and further confirm the results by means of sophisticated infinite Projected Entangled Pair States calculations. By using various order parameters, we show that the choice of higher-order interaction can lead to pair superfluid phase in the system between two different Mott lobes. We also analyze the effect of temperature and density-dependent tunneling to establish the stability of the PSF phase.
