Entanglement entropy in the Lipkin-Meshkov-Glick model -: art. no. 064101
Entanglement entropy in the Lipkin-Meshkov-Glick model -: art. no. 064101
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DOI：
10.1103/physreva.71.064101
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发表时间：
2005-06-01
影响因子：
2.9
通讯作者：
Vidal, J
中科院分区：
文献类型：
--
作者：
Latorre, JI;Orús, R;Vidal, J
分析了嵌入磁场中相互作用的自旋1/2的Lipkin-Meshkov-Glick模型中的纠缠熵。在我们研究的作为相互作用各向异性、磁场和系统大小的函数的临界点上，这个熵显示出奇异性。从我们的分析中得出的结果与一维XY链的结果惊人地相似。
We analyze the entanglement entropy in the Lipkin-Meshkov-Glick model, which describes mutually interacting spin 1/2 embedded in a magnetic field. This entropy displays a singularity at the critical point that we study as a function of the interaction anisotropy, the magnetic field, and the system size. Results emerging from our analysis are surprisingly similar to those found for the one- dimensional XY chain.