论文标题
倾斜的玻色 - 哈伯德链中的偶极凝结链
Dipole condensates in tilted Bose-Hubbard chains
论文作者
论文摘要
我们研究了一个玻色扣链的量子相图，该链链的动力学既可以保存玻色子数和玻色偶极矩，这种情况可能在强烈的光学晶格中出现。偶极矩的保护对相图具有巨大的影响，我们通过将现场理论分析与DMRG模拟相结合来分析。与常规的玻色 - 哈伯德模型不同，相图不包含可压缩的相位，而是由各种外来的偶极冷凝物主导。我们建议在近期冷原子实验中可以鉴定这些冷凝物的方法。
We study the quantum phase diagram of a Bose-Hubbard chain whose dynamics conserves both boson number and boson dipole moment, a situation which can arise in strongly tilted optical lattices. The conservation of dipole moment has a dramatic effect on the phase diagram, which we analyze by combining a field theory analysis with DMRG simulations. Unlike the conventional Bose-Hubbard model, the phase diagram contains no compressible phases, and is instead dominated by various types of exotic dipolar condensates. We suggest ways by which these condensates can be identified in near-term cold atom experiments.
