String patterns in the doped Hubbard model
String patterns in the doped Hubbard model
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DOI：
10.1126/science.aav3587
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发表时间：
2019-07-19
期刊：
影响因子：
56.9
通讯作者：
Greif, Daniel
中科院分区：
文献类型：
--
作者：
Chiu, Christie S.;Ji, Geoffrey;Greif, Daniel
理解强关联量子多体态是现代物理学中最困难的挑战之一。例如，哈伯德模型的相图仍然存在基本的悬而未决的问题，该模型描述了固体中强关联的电子。在这项工作中，我们实现了哈伯德哈密顿量和搜索特定的模式内的个人图像的许多实现强相关的超冷费米子在光学晶格。在掺杂冷原子反铁磁体，我们发现与几何弦，实体，可以解释空穴运动和自旋序之间的关系，在基于模式和传统的观测值的一致性。我们的研究结果表明，模式识别的潜力，冷原子量子多体系统提供关键的见解。
Understanding strongly correlated quantum many-body states is one of the most difficult challenges in modern physics. For example, there remain fundamental open questions on the phase diagram of the Hubbard model, which describes strongly correlated electrons in solids. In this work, we realize the Hubbard Hamiltonian and search for specific patterns within the individual images of many realizations of strongly correlated ultracold fermions in an optical lattice. Upon doping a cold-atom antiferromagnet, we find consistency with geometric strings, entities that may explain the relationship between hole motion and spin order, in both pattern-based and conventional observables. Our results demonstrate the potential for pattern recognition to provide key insights into cold-atom quantum many-body systems.