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Effects of XZY-YZX Type Three-Spin Interactions on the Classical and Quantum Correlations of the Transverse Field XX Spin Chain(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2015年02期
Page:
17-
Research Field:
物理学
Publishing date:

Info

Title:
Effects of XZY-YZX Type Three-Spin Interactions on the Classical and Quantum Correlations of the Transverse Field XX Spin Chain
Author(s):
Lei Shuguo1; 2
(1.School of Physics and Technology,Nanjing Normal University,Nanjing 210023,China) (2.College of Sciences,Nanjing Tech University,Nanjing 211816,China)
Keywords:
spin chains; quantum phase transition; quantum discord
PACS:
O469
DOI:
-
Abstract:
By means of the exact diagonalization method,the classical and quantum correlations between the nearest-neighbors in transverse field XX spin chain with XZY-YZX type three-spin interactions are numerically studied. The effects of three-spin interactions on the correlations have been discussed. Both the singularity in the classical and quantum correlations at the critical points can be used to identify the quantum phase transitions of the model. However,different from that of the transverse field Ising chain,no finite-size effect is found in the derivatives in the correlations with respect to the transverse field. In addition,in case of zero external fields,the total correlations between two neighboring spins are divided equally into the classical and quantum parts,and the behaviors of quantum discord under this degenerative condition are in agreement with that in the literatures.

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Last Update: 2015-06-30