论文标题
量子自旋链中的概括性几乎完整的复兴
Generalized Almost Complete Revivals in quantum spin chains
论文作者
论文摘要
最近引入了几乎完整复兴的概念。在量子多体系统中，本地可观察到的可观察到的最大值几乎完全复兴。在本文中，我们扩展了原始过程，以使复兴可以从Bloch球体上的任意点到任意点。此外，在提议的程序中，复兴和崩溃的位点不一定相同。我们还证明，对于旋转$ S $，高于$ 1/2 $的$ S $几乎完全的复兴被压制为$ 1/s $。
The conception of almost complete revivals has been introduced recently. In a quantum many-body system local observable may exhibit an almost complete revival to its maximal value at the predetermined moment of time. In this paper we extend the original procedure such that the revival may be from an arbitrary point on the Bloch sphere to the arbitrary point. Furthermore in the proposed procedure the reviving and collapsing sites are not necessarily the same. We also demonstrate that for spins $S$ higher than $1/2$ almost complete revivals are suppressed as $1/S$.
