Necessary and sufficient condition of separability of any system
Ping‐Xing Chen, Lin-Mei Liang, Cheng-Zu Li, Ming-Qiu Huang · Physical Review A · 2001
The necessary and sufficient condition of the separability of a mixed state of any system is presented, which is practical in judging the separability of a mixed state. This paper also presents a method of finding the disentangled decomposition of a separable mixed state.