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Classical two-site fidelity and quantum phase transitions in the Ising model and the extended Hubbard model

文献类型:期刊论文

作者Li, YC
刊名physics letters a
出版日期2008
卷号372期号:40页码:6207-6211
关键词STATISTICAL-MECHANICS XY-MODEL ENTANGLEMENT
ISSN号0375-9601
通讯作者li, yc, chinese acad sci, inst semicond, state key lab superlattices & microstruct, pob 912, beijing 100083, peoples r china. 电子邮箱地址: ycli@semi.ac.cn
中文摘要in this letter, the classical two-site-ground-state fidelity (ctgf) is exploited to identify quantum phase transitions (qpts) for the transverse field ising model (tfim) and the one-dimensional extended hubbard model (ehm). our results show that the ctgf exhibits an abrupt change around the regions of criticality and can be used to identify qpts in spin and fermionic systems. the method is especially convenient when it is connected with the density-matrix renormalization group (dmrg) algorithm. (c) 2008 elsevier b.v. all rights reserved.
学科主题半导体物理
收录类别SCI
资助信息national natural science foundation of china 60521001 60776061this work was supported in part by the national natural science foundation of china (grants no. 60521001 and no. 60776061).
语种英语
公开日期2010-03-08
源URL[http://ir.semi.ac.cn/handle/172111/6422]  
专题半导体研究所_中国科学院半导体研究所(2009年前)
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GB/T 7714
Li, YC. Classical two-site fidelity and quantum phase transitions in the Ising model and the extended Hubbard model[J]. physics letters a,2008,372(40):6207-6211.
APA Li, YC.(2008).Classical two-site fidelity and quantum phase transitions in the Ising model and the extended Hubbard model.physics letters a,372(40),6207-6211.
MLA Li, YC."Classical two-site fidelity and quantum phase transitions in the Ising model and the extended Hubbard model".physics letters a 372.40(2008):6207-6211.

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来源:半导体研究所

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