论文标题
Lieb-Robinson绑定了受约束的多体定位
Lieb-Robinson bound for constrained many-body localization
论文作者
论文摘要
研究量子信息如何通过时空歧管传播，提供了一种识别，区分和分类物质的新阶段，从而在强烈相互作用的系统中和均衡中通过多体效应进行了施肥。通过对信息动态行为的关键方面的更全面表征，我们对Quasirandom Rydberg封锁旋转链链模型的受限多体定位（在无限交互极限下新提出的全身定位状态）进行了这样的分析。 OTOC光锥预测，迄今未知的Lieb-Robinson绑定了受约束的多体定位，这与在弱交互极限下稳定的无约束多体的Anderson绝缘子的定性不同。我们佐证的数字和分析研究表明，受约束的多体定位是一个独特的动力学本质阶段，其非效应超出了局部融合的现象学。总之，这些发现巩固了非常规量子动力学的层次结构，包括受约束，不受限制和对角线多体化的方案。
Study how quantum information propagates through spacetime manifold provides a means of identifying, distinguishing, and classifying novel phases of matter fertilized by many-body effects in strongly interacting systems in and out of equilibrium. Via a fuller characterization of key aspects regarding dynamic behaviors of information, we perform such an analysis on constrained many-body localization -- a newly proposed fully localized state under infinite-interaction limit -- in quasirandom Rydberg blockade spin chain models using thermal out-of-time-order commutators (OTOCs). The OTOC light cones predict a hitherto unknown Lieb-Robinson bound for constrained many-body localization, which is qualitatively different from that of unconstrained many-body Anderson insulators stabilized at weak-interaction limit. Our corroborated numeric and analytic study suggests that constrained many-body localization is a distinct dynamical eigenstate phase whose nonergodicity is beyond local-integral-of-motion phenomenology. Together, these findings consolidate the hierarchy of unconventional quantum dynamics encompassing constrained, unconstrained, and diagonal many-body-localized regimes.
