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Partial Entropy and Mutual Entropy of Thermal Entanglement in Anisotropic XY Model in a Transverse Field(PDF)

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

Issue:
2012年03期
Page:
48-51
Research Field:
物理学
Publishing date:

Info

Title:
Partial Entropy and Mutual Entropy of Thermal Entanglement in Anisotropic XY Model in a Transverse Field
Author(s):
Zhai Xiaoyue; Li Yanbiao; Ma Shuyun
Institute of Science,PLA University of Science and Technology,Nanjing 211101,China
Keywords:
thermal entanglement; partial entropy; mutual entropy; anisotropic; XY model; the nearest neighbor interaction
PACS:
O469;O413
DOI:
-
Abstract:
By using the concept of partial entropy，we study the behaviors of the partial entropy of thermal entanglement in anisotropic XY model in a transverse field． It is found that the partial entropy of one subsystem isn’t equivalent to that of the other subsystem． We give the plots of partial entropy as function of temperature and the nearest neighbor interaction． Then we introduce the concept of mutual entropy． We study the mutual entropy of this model and find that the mutual entropy decays exponential with increased temperature． We also give the plots of mutual entropy as function of temperature and the nearest neighbor interaction．

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Last Update: 2013-03-11