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The time-dynamics of quantum correlations in the quantum transverseanisotropic XY spin chain of infinite length is studied at zero as well asfinite temperatures. The evolution occurs due to the instantaneous quenching ofthe coupling constant between the nearest-neighbor spins of the model, which iseither performed within the same phase or across the quantum phase transitionpoint connecting the order-disorder phases of the model. We characterize thetime-evolved quantum correlations, entanglement and quantum discord, whichexhibit varying behavior depending on the initial state and the quenchingscheme. We show that the system is endowed with enhanced bipartite quantumcorrelations compared to that of the initial state, when quenched from orderedto the deep disordered phase. However, bipartite quantum correlations arealmost washed out when the system is quenched from disordered to the orderedphase with the initial state being at the zero-temperature. Moreover, weidentify the condition for the occurrence of enhanced bipartite correlationswhen the system is quenched within the same phase. Finally, we investigate thebipartite quantum correlations when the initial state is a thermal equilibriumstate with finite temperature which reveals the effects of thermal fluctuationon the phenomena observed at zero-temperature.

Survival of time-evolved correlations depends on whether quenching is across critical point in XY spin chain