Quantum Separability Criteria for Arbitrary Dimensional Multipartite   States
  We present separability criteria for both bipartite and multipartite quantum states. These criteria include the criteria based on the correlation matrix and its generalized form as special cases. We show by detailed examples that our criteria are more powerful than the positive partial transposition criterion, the realignment criterion and the criteria based on the correlation matrices. 
Ming Li, Jing Wang, Shao-Ming Fei and Xianqing Li-Jost
quant-ph