  Using the adaptive time-dependent density-matrix renormalization group
method, the dynamics of entanglement and quantum discord of a one-dimensional
spin-1/2 XXZ chain is studied when anisotropic interaction quenches are applied
at different temperatures. The dynamics of the quantum discord and pairwise
entanglement between the nearest qubits shows that the entanglement and quantum
discord will first oscillate and then approach to a constant value. The quantum
discord can be used to predict the quantum phase transition, while the
entanglement cannot.
