论文标题
量子多体疤痕在光学晶格中
Quantum Many-Body Scars in Optical Lattices
论文作者
论文摘要
量子多体疤痕的概念最近被提出，以描述弱的恐怖性破裂和违反特征态热假说的途径。我们提出了一个简单的设置，以在双重调制的玻色 - 哈伯德系统中产生量子多体疤痕，该系统可以在冷原子气体中很容易实现。该动力学显示由动力学约束控制，这些限制通过高频扩展中的密度辅助隧道出现。我们找到了动力学约束跳跃的最佳驾驶参数，这导致了害怕的本本态的小隔离子空间。分析了实验签名和向完全热化行为作为驾驶频率函数的过渡。
The concept of quantum many-body scars has recently been put forward as a route to describe weak ergodicity breaking and violation of the Eigenstate Thermalization Hypothesis. We propose a simple setup to generate quantum many-body scars in a doubly modulated Bose-Hubbard system which can be readily implemented in cold atomic gases. The dynamics are shown to be governed by kinetic constraints which appear via density assisted tunneling in a high-frequency expansion. We find the optimal driving parameters for the kinetically constrained hopping which leads to small isolated subspaces of scared eigenstates. The experimental signatures and the transition to fully thermalizing behavior as a function of driving frequency are analyzed.
