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We investigate the influence of photon excitations on quantum correlations intripartite Glauber coherent states of Greenberger-Horne-Zeilinger type. Thepairwise correlations are measured by means of the entropy-based quantumdiscord. We also analyze the monogamy property of quantum discord in this classof tripartite states in terms of the strength of Glauber coherent states andthe photon excitation order.

Quantum discord in photon added Glauber coherent states of ${\rm GHZ}$-type