Equivalence of critical scaling laws for many-body entanglement in the Lipkin-Meshkov-Glick model

被引：158

作者：

Orus, Roman ^{[1
]}

Dusuel, Sebastien ^{[2
]}

Vidal, Julien ^{[3
]}

机构：

[1] Univ Queensland, Sch Phys Sci, Brisbane, Qld 4072, Australia

[2] Lycee Louis Thuillier, F-80098 Amiens 3, France

[3] Univ Paris 06, CNRS, UMR 7600, Lab Phys Theor Mat Condensee, F-75252 Paris 05, France

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.101.025701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We establish a relation between several entanglement properties in the Lipkin-Meshkov-Glick model, which is a system of mutually interacting spins embedded in a magnetic field. We provide analytical proofs that the single-copy entanglement and the global geometric entanglement of the ground state close to and at criticality behave as the entanglement entropy. These results are in deep contrast to what is found in one- dimensional spin systems where these three entanglement measures behave differently.

引用

页数：4

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