We investigate the separability of arbitrary dimensional tripartite sys- tems. By introducing a new operator related to transformations on the subsystems a necessary condition for the separability of tripartite systems is presented.
@article{arxiv.0809.1022,
title = {Separability of Tripartite Quantum Systems},
author = {Ming Li and Shao-Ming Fei and Zhi-Xi Wang},
journal= {arXiv preprint arXiv:0809.1022},
year = {2008}
}