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Entanglement in spin-1/2 dimerized Heisenberg systems

Zhe Sun·XiaoGuang Wang·AnZi Hu·You-Quan Li
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Abstract

We study entanglement in dimerized Heisenberg systems. In particular, we give exact results of ground-state pairwise entanglement for the four-qubit model by identifying a Z_2 symmetry. Although the entanglements cannot identify the critical point of the system, the mean entanglement of nearest-neighbor qubits really does, namely, it reaches a maximum at the critical point.

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Zhe Sun, XiaoGuang Wang, AnZi Hu, You-Quan Li. 2005-01-21. Entanglement in spin-1/2 dimerized Heisenberg systems. https://doi.org/10.1088/0253-6102%2F43%2F6%2F015

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