论文标题
大型自旋连锁店的混乱增强
Chaos enhancement in large-spin chains
论文作者
论文摘要
我们研究了一个大型自旋XXZ链的混沌性质，该链具有现场障碍，并且高于完全极化状态的少量激发。我们表明，尽管大型旋转达到的经典极限是混乱的，但旋转抑制了量子混乱的特征。我们将这种抑制归因于大型和缓慢的现场激发簇，并提出了一种通过引入其他衰减通道来促进其碎片化的方法。我们在数值上验证了这种放松通道的引入恢复了大型自旋的混乱性，因此仅需要三个激发才能实现强烈的排斥和雄性本征态。
We study the chaotic properties of a large-spin XXZ chain with onsite disorder and a small number of excitations above the fully polarized state. We show that while the classical limit, which is reached for large spins, is chaotic, enlarging the spin suppresses quantum chaos features. We attribute this suppression to the occurrence of large and slow clusters of onsite excitations, and propose a way to facilitate their fragmentation by introducing additional decay channels. We numerically verify that the introduction of such relaxation channels restores chaoticity for large spins, so that only three excitations are required to achieve strong level repulsion and ergodic eigenstates.
