论文标题
量子多体疤痕中的几个体偶极偶极相互作用
Quantum Many-Body Scars in Few-Body Dipole-Dipole Interactions
论文作者
论文摘要
我们模拟了Rydberg原子的动力学，通过在一维阵列中通过两，三体和四体偶极 - 偶极相互作用进行共鸣。使用现实的实验系统的简化模型，我们研究了初始状态存活概率，平均水平间距，纠缠的扩散和能量本质的特性。通过探索一系列疾病和相互作用强度，我们在参数空间中找到了三体和四体动力学的区域，要么无法热化或缓慢地进行热度。较强的跳跃与较弱的场合相互作用之间的相互作用会导致量子多体疤痕状态，这在减慢三体和四体相互作用的动力学方面起着至关重要的作用。
We simulate the dynamics of Rydberg atoms resonantly exchanging energy via two-, three-, and four-body dipole-dipole interactions in a one-dimensional array. Using simplified models of a realistic experimental system, we study the initial state survival probability, mean level spacing, spread of entanglement, and properties of the energy eigenstates. By exploring a range of disorders and interaction strengths, we find regions in parameter space where the three- and four-body dynamics either fail to thermalize or do so slowly. The interplay between the stronger hopping and weaker field-tuned interactions gives rise to quantum many-body scar states, which play a critical role in slowing the dynamics of the three- and four-body interactions.
