Thermodynamical limit of the Lipkin-Meshkov-Glick model

被引：185
|
作者：
Ribeiro, Pedro [1 ]
Vidal, Julien [1 ]
Mosseri, Remy [1 ]
机构：
[1] Univ Paris 06, CNRS, Lab Phys Theor Mat Condensee, UMR 7600, F-75252 Paris 05, France
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 05期
关键词：
D O I：
10.1103/PhysRevLett.99.050402
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A method based on the analysis of the Majorana polynomial roots is introduced to compute the spectrum of the Lipkin-Meshkov-Glick model in the thermodynamical limit. A rich structure made of four qualitatively different regions is revealed in the parameter space, whereas the ground state study distinguishes between only two phases. © 2007 The American Physical Society.
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页数：4
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