Entanglement Measure for Composite Systems
量子物理
2009-11-10 v1 统计力学
摘要
A general description of entanglement is suggested as an action realized by an arbitrary operator over given disentangled states. The related entanglement measure is defined. Because of its generality, this definition can be employed for any physical systems, pure or mixed, equilibrium or nonequilibrium, and characterized by any type of operators, whether these are statistical operators, field operators, spin operators, or anything else. Entanglement of any number of parts from their total ensemble forming a multiparticle composite system can be determined. Interplay between entanglement and ordering, occurring under phase transitions, is analysed by invoking the concept of operator order indices.
引用
@article{arxiv.quant-ph/0309015,
title = {Entanglement Measure for Composite Systems},
author = {V. I. Yukalov},
journal= {arXiv preprint arXiv:quant-ph/0309015},
year = {2009}
}
备注
6 pages, Revtex