Engineering antiferromagnetic Heisenberg spin chains for maximizing of the groundstate entanglement
文献类型：期刊论文
| 作者 | Xin, R; Song, Z; Sun, CP ; Song, Z , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China.
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| 刊名 | PHYSICS LETTERS A
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| 出版日期 | 2005 |
| 卷号 | 342期号:40910页码:30-35 |
| 关键词 | Energy Levels Ladders Systems |
| ISSN号 | 0375-9601 |
| 英文摘要 | We study the correlation function and concurrence for the eigenstates with zero spin of engineered Heisenberg models to explore the entanglement property. It is shown that the total nearest neighbor (NN) correlation function of zero-spin eigenstates reaches its local extremum when the coupling strength is uniform, and correspondingly the groundstate entanglement of d-D cubic AF Heisenberg model is locally maximized. Moreover, numerical calculations for a N-site quantum spin ring with cosinusoidally modulated exchange coupling, i.e., J(i) = J(1 + cos(2 pi i/N)), indicate that the uniform coupling is not the unique optimal distribution for maximizing the groundstate entanglement and this modulation of interactions can induce the longer range entanglement. (c) 2005 Elsevier B.V. All rights reserved. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000230248100004 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13786]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Song, Z , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Xin, R,Song, Z,Sun, CP,et al. Engineering antiferromagnetic Heisenberg spin chains for maximizing of the groundstate entanglement[J]. PHYSICS LETTERS A,2005,342(40910):30-35. |
| APA | Xin, R,Song, Z,Sun, CP,&Song, Z , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China..(2005).Engineering antiferromagnetic Heisenberg spin chains for maximizing of the groundstate entanglement.PHYSICS LETTERS A,342(40910),30-35. |
| MLA | Xin, R,et al."Engineering antiferromagnetic Heisenberg spin chains for maximizing of the groundstate entanglement".PHYSICS LETTERS A 342.40910(2005):30-35. |
入库方式： OAI收割
来源：理论物理研究所
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