论文标题
观察强烈相互作用的费米子中通用大厅的响应
Observation of Universal Hall Response in Strongly Interacting Fermions
论文作者
论文摘要
霍尔效应源自磁场中带电颗粒的运动，对材料的描述产生了深远的后果，远远超出了凝结物质。即使对于小磁场，了解相互作用系统中的这种效果也代表了一个基本挑战。在这项工作中，我们使用了一个原子量子模拟器，其中我们跟踪了由人造磁场螺纹的两腿丝带中的超速填充运动的运动。通过可控的淬火动力学，我们测量了HALL响应的一系列合成隧道和原子相互作用强度。与理论分析一致，我们在相互作用阈值之上揭示了与普遍相互作用的行为。达到难以计算的机制的能力证明了量子模拟的力量，描述了物质的密切相关拓扑状态。
The Hall effect, which originates from the motion of charged particles in magnetic fields, has deep consequences for the description of materials, extending far beyond condensed matter. Understanding such an effect in interacting systems represents a fundamental challenge, even for small magnetic fields. In this work, we used an atomic quantum simulator in which we tracked the motion of ultracold fermions in two-leg ribbons threaded by artificial magnetic fields. Through controllable quench dynamics, we measured the Hall response for a range of synthetic tunneling and atomic interaction strengths. We unveil a universal interaction-independent behavior above an interaction threshold, in agreement with theoretical analyses. The ability to reach hard-to-compute regimes demonstrates the power of quantum simulation to describe strongly correlated topological states of matter.
