论文标题
探测大规模损害的费米 - 哈伯德模型中的运输和缓慢的放松
Probing transport and slow relaxation in the mass-imbalanced Fermi-Hubbard model
论文作者
论文摘要
量子多体系统动力学的约束也可以显着改变运输特性和放松时间标准，即使在没有静态障碍的情况下。在这里，我们报告了对一维质量损坏的费米 - 哈伯德模型中两个物种的独特迁移率产生的这种约束动力学的观察，该模型在依赖状态依赖的光学晶格中用超低ytterbium原子实现。通过置换陷阱电位并监测系统的随后动态响应，我们确定了抑制的运输和缓慢的放松，并且对质量不平衡和种间相互作用强度有很大的依赖，这与最终的热量一致。我们的观察结果表明，量子模拟器有可能提供对限制因素引起的非常规松弛动力学的见解。
Constraints in the dynamics of quantum many-body systems can dramatically alter transport properties and relaxation timescales even in the absence of static disorder. Here, we report on the observation of such constrained dynamics arising from the distinct mobility of two species in the one-dimensional mass-imbalanced Fermi-Hubbard model, realized with ultracold ytterbium atoms in a state-dependent optical lattice. By displacing the trap potential and monitoring the subsequent dynamical response of the system, we identify suppressed transport and slow relaxation with a strong dependence on the mass imbalance and interspecies interaction strength, consistent with eventual thermalization for long times. Our observations demonstrate the potential for quantum simulators to provide insights into unconventional relaxation dynamics arising from constraints.
