论文标题
传统和外来的一维超流体中的磁化率和纠缠之间的线性映射
Linear mapping between magnetic susceptibility and entanglement in conventional and exotic one-dimensional superfluids
论文作者
论文摘要
我们研究了Hubbard模型所描述的一维费米子晶状体系统的金属，绝缘，常规和异国情调的超流相阶段中的磁敏感性和纠缠之间的映射。通过最近通过磁敏感性测量来确定和量化纠缠的建议，我们在零温度下数量之间的固有关系。我们发现金属 - 绝缘体过渡和BCS-BEC跨界的特征，但最相关的结果是，对于常规和异国情调的超流体，磁敏感性和纠缠之间的映射非常简单：不相反。可以利用这种线性行为来量化当前冷原子和凝结物实验中的纠缠。
We investigate the mapping between magnetic susceptibility and entanglement in the metallic, insulating, conventional and exotic polarized superfluid phases of one-dimensional fermionic lattice systems as described by the Hubbard model. Motivated by recent proposals for determining and quantifying entanglement via magnetic susceptibility measurements, we numerically study the intrinsic relationship between the two quantities at zero temperature. We find signatures of the metal-insulator transition and of the BCS-BEC crossover, but the most relevant result is that for conventional and exotic superfluids the mapping between magnetic susceptibility and entanglement is surprisingly simple: inversely proportional. This linear behavior could be exploited to quantify entanglement in current cold-atoms and condensed-matter experiments.
