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Local entanglement and quantum phase transition in spin models

NEW JOURNAL OF PHYSICS, no. 4 (2006): 61-61

Cited: 55|Views25
WOS SCOPUS

Abstract

In this paper, we study quantum phase transitions in both the one- and two-dimensional XXZ models with either spin S = 1/ 2 or S = 1 by a local entanglement E-v. We show that the behaviour of E-v is dictated by the low-lying spin excitation spectra of these systems. Therefore, the anomalies of E-v imply their critical points. This recalls...More

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