Dzyaloshinskii-Moriya interaction and anisotropy effects on the tripartite quantum discord of Heisenberg XY model

In this paper, we address the tripartite quantum discord for the Heisenberg XY chain with the Dzyaloshinskii-Moriya (DM) interaction using the quantum renormalization-group (QRG) method. In thermodynamic limit, like the entanglement, the tripartite discord exhibits the quantum phase transition (QPT) between the spin-fluid and the Neel phases. The er effect of the DM interaction and the anisotropy on the features of the tripartite quantum discord has been probed. It is noted that the DM interaction brings the critical point earlier and affects heavily with the size of the system. Moreover, the system requires a larger number of the iterations to achieve the QPT for the tripartite quantum discord as compared to the entanglement.