We have decided to discontinue the publication of preprints on our preprint server as of 1 March 2024. The publication culture within mathematics has changed so much due to the rise of repositories such as ArXiV (www.arxiv.org) that we are encouraging all institute members to make their preprints available there. An institute's repository in its previous form is, therefore, unnecessary. The preprints published to date will remain available here, but we will not add any new preprints here.
MiS Preprint
53/2016
Bounds on Multipartite Concurrence and Tangle
Jing Wang, Ming Li, Hongfang Li, Shao-Ming Fei and Xianqing Li-Jost
Abstract
We present an analytical lower bound of multipartite concurrence based on the generalized Bloch representation of density matrices. It is shown that the lower bound can be used as an effective entanglement witness of genuine multipartite entanglement. Tight lower and upper bounds for multipartite tangles are also derived.
