晶格中的玻色子分子：来自多通道相互作用的不寻常流体相
Bosonic molecules in a lattice: unusual fluid phase from multichannel interactions
摘要：
我们发现，多通道相互作用显着改变超冷玻色子分子在光晶格的相图。最显著的是，在传统超流体和莫特绝缘体之间存在一个不寻常的流体区域。在它，数量波动仍然存在，但相位相干性被抑制的一个重要因素。该因子可以任意大，至少在两个站点配置中是这样。我们用Gutzwiller平均场和密度矩阵重整化群（DMRG）方法计算了相图。虽然我们专注于玻色子分子没有偶极相互作用，我们希望多通道相互作用仍然是重要的偶极相互作用和费米子分子。
英文摘要：
We show that multichannel interactions significantly alter the phase diagram of ultracold bosonic molecules in an optical lattice. Most prominently, an unusual fluid region intervenes between the conventional superfluid and the Mott insulator. In it, number fluctuations remain but phase coherence is suppressed by a significant factor. This factor can be made arbitrarily large, at least in a two-site configuration. We calculate the phase diagram using complementary methods, including Gutzwiller mean-field and density matrix renormalization group (DMRG) calculations. Although we focus on bosonic molecules without dipolar interactions, we expect multichannel interactions to remain important for dipolar interacting and fermionic molecules.
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