The Tripartite Separability of Density Matrices of Graphs

The density matrix of a graph is the combinatorial laplacian matrix of a graph normalized to have unit trace. In this paper we generalize the entanglement properties of mixed density matrices from combinatorial laplacian matrices of graphs discussed in Braunstein et al. Annals of Combinatorics, 10(2006)291 to tripartite states. Then we proved that the… CONTINUE READING