论文标题

对高度沮丧的Spin-1/2海森贝格八面体链的磁化过程的纠缠措施的调查,作为局部马格农方法的新范式

Investigation of entanglement measures across the magnetization process of a highly frustrated spin-1/2 Heisenberg octahedral chain as a new paradigm of the localized-magnon approach

论文作者

Strecka, Jozef, Krupnitska, Olesia, Richter, Johannes

论文摘要

在局部元音的概念中检查了高度沮丧的旋转1/2海森堡八面体链的磁化过程的两方块纠缠,这可以简单地计算出从广场上的邻居和下一个最尼克啤酒之间的成对纠缠强度的并发。有限大小的海森贝格八面体链的完全精确的对角线化,最多4个单位细胞(20个旋转)证明了局部杂种理论在预测足够低的温度下的两极纠缠的量度方面的非凡高精度。尽管在足够低的磁场处出现的单体四聚体阶段表现出(不存在)(不存在)在最近的neighbor(下一个Nearest-Neighbor)之间的两部分纠缠中,但饱和剂量以下的镁晶体阶段出现在饱和场以下,相反显示了最近的相同的脱离杂货,在最近的隔离式构造界面之间显示了最近的邻苯二甲酸酯和近代人之间的近距离旋转。提出的结果验证了与纠缠措施的简单计算有关的局部马格农方法的新范式。

The bipartite entanglement across the magnetization process of a highly frustrated spin-1/2 Heisenberg octahedral chain is examined within the concept of localized magnons, which enables a simple calculation of the concurrence measuring a strength of the pairwise entanglement between nearest-neighbor and next-nearest-neighbor spins from square plaquettes. A full exact diagonalization of the finite-size Heisenberg octahedral chain with up to 4 unit cells (20 spins) evidences an extraordinary high precision of the localized-magnon theory in predicting measures of the bipartite entanglement at sufficiently low temperatures. While the monomer-tetramer phase emergent at low enough magnetic fields exhibits presence (absence) of the bipartite entanglement between the nearest-neighbor (next-nearest-neighbor) spins, the magnon-crystal phase emergent below the saturation field contrarily displays identical bipartite entanglement between the nearest-neighbor and next-nearest-neighbor spins. The presented results verify a new paradigm of the localized-magnon approach concerned with a simple calculation of entanglement measures.

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