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The quantum dynamics of two entangled two-level atoms initially in extendedWerner-like (EWL) states is studied. Each of the two atoms is located within anisolated and dissipative cavity. If the interaction time of atoms and cavitiesis not very long, the amount of quantum discord and entanglement between twoatoms decreases as the system evolves. The sudden death of quantum discord andentanglement of two atoms occurs within a short interaction time. However,after a long interaction time, quantum discord and entanglement of two atomscould be partially preserved due to the long-lived nature of quantum discordand entanglement. Surprisingly, we find the amount of long-lived quantumdiscord could be smaller than that of long-lived entanglement. Thus,entanglement may be more robust than quantum discord against decoherence.

Sudden death and robustness of quantum discord and entanglement of two atoms in dissipative cavities in dispersive limit