Multipartite entanglement in spin chains -: art. no. 229

被引：173

作者：

Gühne, O

Tóth, G

Briegel, HJ

机构：

[1] Austrian Acad Sci, Inst Quantenopt & Quanteninformat, A-6020 Innsbruck, Austria

[2] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

[3] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria

来源：

NEW JOURNAL OF PHYSICS | 2005年 / 7卷

关键词：

D O I：

10.1088/1367-2630/7/1/229

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the presence of multipartite entanglement in macroscopic spin chains. We discuss the Heisenberg and the XY model and derive bounds on the internal energy for systems without multipartite entanglement. Based on this we show that in thermal equilibrium the above-mentioned spin systems contain genuine multipartite entanglement, even at finite modest temperatures.

引用

页数：10

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