We investigate the entanglement of the ground state in the quantum cyclic graphs whose nodes are considered as quantum harmonic oscillators. To this end, the Schmidt numbers and entanglement entropy between two arbitrary partitions with equal nodes of a cyclic graphs, are calculated. For that, the local operation is used to build singular value decomposition of potential matrix of cyclic graphs. Then the maximum value of entanglement entropy among all bipartite cyclic graphs is obtained.

中文翻译：

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使用计算机软件研究循环二部图中的纠缠熵

我们研究了量子循环图中基态的纠缠，其节点被视为量子谐波振荡器。为此，计算具有循环图的相等节点的两个任意分区之间的施密特数和纠缠熵。为此，使用局部运算来建立循环图的势矩阵的奇异值分解。然后获得所有二分循环图之间的纠缠熵的最大值。