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arXiv:quant-ph/0501117 · Communications in Theoretical Physics

Entanglement in Spin-1/2 Dimerized Heisenberg Systems

Sun Zhe, Wang Xiao-Guang, Hu An-Zi, Li You-Quan

Published Jun 1, 2005• 11 citations
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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 the nearest-neighbor qubits really does, namely, it reaches a maximum at the critical point.

DOI
10.1088/0253-6102/43/6/015

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