Entanglement in a two-spin system with long-range interactions

被引：7
|
作者：
Soltani, M. R. [1 ]
Mahdavifar, S. [2 ]
Mahmoudi, M. [2 ]
机构：
[1] Islamic Azad Univ, Yadegar E Imam Khomeini RAH Shahre Rey Branch, Coll Sci, Dept Phys, Tehran, Iran
[2] Univ Guilan, Dept Phys, Rasht 413351914, Iran
来源：
CHINESE PHYSICS B | 2016年 / 25卷 / 08期
关键词：
entanglement; Ising model; DM interaction; negativity; long range interaction; GROUND-STATE; QUANTUM; CHAIN; MODEL;
D O I：
10.1088/1674-1056/25/8/087501
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The quantum entanglement between two spins in the Ising model with an added Dzyaloshinsky-Moriya (DM) interaction and in the presence of the transverse magnetic field is studied. The exchange interaction is considered as a function of the distance between spins. The negativity as a function of magnetic field, exchange and DM interaction is calculated. The effect of the distance between spins is studied based on the negativity. In addition, the effect of the thermal fluctuation on the negativity is also investigated.
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页数：4
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