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Quantum phase transition in easy-axis antiferromagnetic Heisenberg spin-1 chain

Authors
  • Ren, Jie
  • Zhu, Shiqun
Type
Published Article
Publication Date
Jun 07, 2010
Submission Date
Jun 07, 2010
Identifiers
DOI: 10.1103/PhysRevA.79.034302
Source
arXiv
License
Yellow
External links

Abstract

The fidelity and entropy in an easy-axis antiferromagnetic Heisenberg spin-1 chain are studied numerically. By using the method of density-matrix renormalization group, the effects of anisotropy on fidelity and entanglement entropy are investigated. Their relations with quantum phase transition are analyzed. It is found that the quantum phase transition from the Haldane spin liquid to N\'eel spin solid can be well characterized by the fidelity. The phase transition can be hardly detected by the entropy but it can be successfully detected by the first deviation of the entropy.

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