Block entanglement in the single-hole Hubbard model
文献类型：期刊论文
| 作者 | K. L. Yao ; X. Z. Sun ; Z. L. Liu ; Y. C. Li ; L. Yu ; G. Y. Gao |
| 刊名 | Chinese Physics Letters
 |
| 出版日期 | 2006 |
| 卷号 | 23期号:9页码:2352-2355 |
| 关键词 | quantum renormalization-groups phase-transition entropy |
| ISSN号 | 0256-307X |
| 中文摘要 | We investigate the distribution of the entanglement of the one-dimensional single-hole Hubbard model (HM) and study the relationship between the entanglement and the quantum phase transition in the model. The von Neumann entropy of a block with neighbouring spins L for a single-hole HM is calculated using the density-matrix renormalization group. The distribution of the entanglement entropy in the ground state, as a function of block length, show a dramatic effect, i.e. effectively decoupling with centres, no matter how the Coulomb interaction u > 0 or u < 0. Contarily, for the Coulomb interaction u = 0 or close to zero, the entanglement entropy in the single-hole model reaches a saturation model for a certain block size. For a fixed size L = 40, the ground state entanglement entropy measure, as a function of u, shows a peak corresponding to the critical quantum phase transition. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34657]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | K. L. Yao,X. Z. Sun,Z. L. Liu,et al. Block entanglement in the single-hole Hubbard model[J]. Chinese Physics Letters,2006,23(9):2352-2355. |
| APA | K. L. Yao,X. Z. Sun,Z. L. Liu,Y. C. Li,L. Yu,&G. Y. Gao.(2006).Block entanglement in the single-hole Hubbard model.Chinese Physics Letters,23(9),2352-2355. |
| MLA | K. L. Yao,et al."Block entanglement in the single-hole Hubbard model".Chinese Physics Letters 23.9(2006):2352-2355. |
入库方式： OAI收割
来源：金属研究所
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