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arXiv 2402.01102quant-phcond-mat.stat-mech
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非遍历量子态的纠缠熵分布

Distribution of the entanglement entropy of a non-ergodic quantum state

Devanshu Shekhar, Pragya Shukla

AI总结:

本文利用广义多参数 Wishart 系综理论推导非遍历多体态纠缠度量的概率密度,揭示其相对平均行为的显著涨落及其在纠缠态分类和相变研究中的意义。

摘要:

我们从理论上推导了纯的非遍历多体态的纠缠度量的概率密度;该态在双粒子积基中表示,其约化密度矩阵由具有单位迹的广义多参数 Wishart 系综描述。结果表明,这些度量围绕其平均行为存在显著涨落(尤其对于远离可分性极限和最大纠缠极限的态)。该信息不仅与纠缠态的层级排列相关(例如揭示基于平均行为对其进行表征的缺陷),也与多体系统的相变研究有关。

英文摘要:

We theoretically derive the probability densities of the entanglement measures of a pure non-ergodic many-body state, represented in a bipartite product basis and with its reduced density matrix described by a generalized, multi-parametric Wishart ensemble with unit trace. Our results indicate significant fluctuations of the measures around their average behavior (specifically for the states away from separability and maximum entanglement limits). The information is relevant not only for hierarchical arrangement of entangled states (e.g., revealing the flaws in their characterization based on average behavior) but also for phase transition studies of many body systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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