Finite-size scaling exponents of the Lipkin-Meshkov-Glick model

被引：237

作者：

Dusuel, S

Vidal, J

机构：

[1] Univ Cologne, Inst Theoret Phys, D-50937 Cologne, Germany

[2] CNRS, UMR 7588, Phys Solides Grp, F-75015 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.93.237204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the ground state properties of the critical Lipkin-Meshkov-Glick model. Using the Holstein-Primakoff boson representation, and the continuous unitary transformation technique, we compute explicitly the finite-size scaling exponents for the energy gap, the ground state energy, the magnetization, and the spin-spin correlation functions. Finally, we discuss the behavior of the two-spin entanglement in the vicinity of the phase transition.

引用

页数：4

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