论文标题

持续的复兴,在被困的骨气原子系统中

Persistent revivals in a system of trapped bosonic atoms

论文作者

Mejia, Carlos Diaz, de la Cruz, Javier, Lerma-Hernandez, Sergio, Hirsch, Jorge G.

论文摘要

在不同初始状态的生存概率中观察到量子混乱的动力学特征,在捕获的冷原子系统中,被困在带有位点噪声和开放边界条件的线性链中。结果表明,在中间能量的小型疾病区域中存在混乱。该研究是用不同数量的位点和原子进行的:7,8和9,但着重于粒子密度为一种的情况。在混乱区域具有能量的职业基础状态很长时间发展。 对于具有不同能量 - 欧文大约参与比(PR)的状态的状态,发现生存概率的行为差异很大。尽管具有较大PR的人在平衡前清楚地表现出特征性的随机矩阵相关孔,但具有小PR的人具有边际甚至没有相关孔,而相关孔被持续到平衡阶段的复兴所取代,这表明与量子疤痕现象的联系。

Dynamical signatures of quantum chaos are observed in the survival probability of different initial states, in a system of cold atoms trapped in a linear chain with site noise and open boundary conditions. It is shown that chaos is present in the region of small disorder, at intermediate energies. The study is performed with different number of sites and atoms: 7,8 and 9, but focusing on the case where the particle density is one. States of the occupation basis with energies in the chaotic region are evolved at long times. Remarkable differences in the behaviour of the survival probability are found for states with different energy-eigenbasis participation ratio (PR). Whereas those with large PR clearly exhibit the characteristic random-matrix correlation hole before equilibration, those with small PR present a marginal or even no correlation hole which is replaced by revivals lasting up to the stage of equilibration, suggesting a connection with the quantum scarring phenomenon.

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