ENTANGLEMENT PROPERTIES OF QUANTUM MANY-BODY WAVE FUNCTIONS

被引：0
|
作者：
Clark, J. W. [1 ]
Mandilara, A. [2 ]
Ristig, M. L. [3 ]
Kuerten, K. E. [4 ]
机构：
[1] Washington Univ, Dept Phys, St Louis, MO 63130 USA
[2] Univ Brussels, Ecole Polytech, Quantum Informat & Commun, B-1050 Brussels, Belgium
[3] Univ Cologne, Inst Theoret, D-50937 Cologne, Germany
[4] Univ Vienna, Inst Expermentalphys, A-1090 Vienna, Austria
来源：
CONDENSED MATTER THEORIES, VOL 24 | 2010年
基金：
美国国家科学基金会;
关键词：
Entanglement measures; strong correlations; transverse Ising model; Jastrow wave functions; quantum phase transitions; COUPLED-CLUSTER METHOD; GROUND-STATE; EXCITED-STATES; ISING-MODEL; SYSTEMS; LIQUID-HE-4; FIELD;
D O I：
10.1142/9789814289153_0008
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The entanglement properties of correlated wave functions commonly employed in theories of strongly correlated many-body systems are studied. The variational treatment of the transverse Ising model within correlated-basis theory is reviewed, and existing calculations of the one- and two-body reduced density matrices are used to evaluate or estimate established measures of bipartite entanglement, including the Von Neumann entropy, the concurrence, and localizable entanglement, for square, cubic, and hypercubic lattice systems. The results discussed in relation to the findings of previous studies that explore the relationship of entanglement behaviors to quantum critical phenomena and quantum phase transitions. It is emphasized that Jastrow-correlated wave functions and their extensions contain multipartite entanglement to all orders.
引用
收藏
页码：105 / +
页数：3
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