The Evolution of Quantum Discord and Entanglement in the XXZ Heisenberg Spin Chain under Ornstein-Uhlenbeck Noise.

The dynamics of entanglement measured by concurrence and quantum correlation described by quantum discord under Ornstein-Uhlenbeck noise are investigated in several different cases. Our study mainly found that for both anti-ferromagnetic and ferromagnetic cases, the value of concurrence could be increased significantly by the cooperative effect of XZX+YZY and XZY-YZX three-site interactions. For anti-ferromagnetic case, XZY-YZX interaction has a positive effect on increasing the value of concurrence, nonetheless, for the ferromagnetic case, the XZX+YZY interaction plays a major role in enlarging and sustaining the value of concurrence. Whereas XZY-YZX interaction has a negative effect on concurrence for small J. The Non-Markovian case is much more effective than short-time limit or Markov limit case to preserve both concurrence and quantum discord. For small dissipation, the short-time limit is better than the Markov limit to prolong the lifetime of concurrence and quantum discord. For large dissipation, the Markov limit case is a preferable approximation. The entanglement sudden death time could be prolonged in the ferromagnetic case more than in the anti-ferromagnetic case. [ABSTRACT FROM AUTHOR]