Injecting a sufficiently large energy density into an isolated many-particle system prepared in a state with long-range order will lead to the melting of the order over time. Detailed information about this process can be derived from the quantum mechanical probability distribution of the order parameter. We study this process for the paradigmatic case of the spin-1/2 Heisenberg XXZ chain. We determine the full quantum mechanical distribution function of the staggered subsystem magnetization as a function of time after a quantum quench from the classical Néel state. We establish the existence of an interesting regime at intermediate times that is characterized by a very broad probability distribution. Based on our findings we propose a simple general physical picture of how long-range order melts.

中文翻译：

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量子猝灭后的顺序如何熔化

将足够大的能量密度注入以远距离有序状态制备的分离的多粒子系统中，将导致该随时间变化的熔化。有关此过程的详细信息可以从阶数参数的量子力学概率分布中得出。我们针对自旋1/2海森堡XXZ链的典型案例研究此过程。我们确定了从经典Néel态量子猝灭后，交错子系统磁化的完整量子力学分布函数与时间的关系。我们在中间时间建立了一个有趣的机制，该机制的特征是非常广泛的概率分布。根据我们的发现，我们提出了有关远程有序熔化的简单物理图景。