Systematic Construction of Scarred Many-Body Dynamics in 1D Lattice Models.
Systematic Construction of Scarred Many-Body Dynamics in 1D Lattice Models.
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DOI：
10.1103/physrevlett.123.030601
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发表时间：
2019-03
影响因子：
8.6
通讯作者：
Kieran Bull;I. Martin;Z. Papić
中科院分区：
文献类型：
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作者：
Kieran Bull;I. Martin;Z. Papić
我们介绍了一个家庭的nonintegrable一维晶格模型，具有强大的周期性复苏下的全球淬火从某些初始产品状态，从而推广的现象，最近观察到的多体疤痕在里德伯原子量子模拟器。我们的建设是基于一个系统的嵌入到一个动力学约束的多体系统的单站点酉动力学。我们数值证明，这种结构产生新的家庭的模型与强大的波函数复兴，它包括动力学约束的量子时钟模型作为一个特例。我们发现，这些模型中的疤痕动力学可以分解成一个几乎自由的时钟进动和一个相互作用的瓶颈期，揭示了它们从特殊的初始状态淬火时的异常缓慢的热化。
We introduce a family of nonintegrable 1D lattice models that feature robust periodic revivals under a global quench from certain initial product states, thus generalizing the phenomenon of many-body scarring recently observed in Rydberg atom quantum simulators. Our construction is based on a systematic embedding of the single-site unitary dynamics into a kinetically constrained many-body system. We numerically demonstrate that this construction yields new families of models with robust wave-function revivals, and it includes kinetically constrained quantum clock models as a special case. We show that scarring dynamics in these models can be decomposed into a period of nearly free clock precession and an interacting bottleneck, shedding light on their anomalously slow thermalization when quenched from special initial states.