论文标题
疤痕状态在解义$ \ mathbb {z} _2 $ lattice仪表理论
Scar States in Deconfined $\mathbb{Z}_2$ Lattice Gauge Theories
论文作者
论文摘要
量子多体疤痕（QMB）引起的弱的恐怖性破裂代表了一个有趣的概念，近年来由于其与异常的非平衡行为的关系而受到了极大的关注。在这里，我们揭示了这种现象可以发生在晶格仪理论的先前未开发的制度中，由于存在大量局部约束，因此出现了QMBS。特别是，通过分析计量的Kitaev模型，我们提供了一个示例，其中QMB出现在充电的制度中。通过数值和分析方法，我们发现各种疤痕状态远离模型可以集成的政权。这些状态的存在是通过直接从分析到达的极限以及通过显示特定初始状态持续振荡的量子淬灭来揭示的。
The weak ergodicity breaking induced by quantum many-body scars (QMBS) represents an intriguing concept that has received great attention in recent years due to its relation to unusual non-equilibrium behaviour. Here we reveal that this phenomenon can occur in a previously unexplored regime of a lattice gauge theory, where QMBS emerge due to the presence of an extensive number of local constraints. In particular, by analyzing the gauged Kitaev model, we provide an example where QMBS appear in a regime where charges are deconfined. By means of both numerical and analytical approaches, we find a variety of scarred states far away from the regime where the model is integrable. The presence of these states is revealed both by tracing them directly from the analytically reachable limit, as well as by quantum quenches showing persistent oscillations for specific initial states.
