非均匀磁场中Heisenberg XXZ自旋链的热量子失协

摘要

We investigate the quantum discord of a two-qubits one dimensional Heisenberg XYZ spin chain in the thermal equilibrium depend on the temperature T and in the presence of inhomogeneous magnetic field. The influences of temperature T, the external magnetic field (both B and 6) and ani-sotropic parameter Jz on quantum discord dynamic are addressed in detail. Parameter dependence of the effects is calculated and discussed.%研究了非均匀磁场中两量子比特的一维海森堡XXZ自旋链的热量子失协,探讨了有限温度下的量子纠缠和量子失协行为,并且对参数(温度T,均匀磁场B,非均匀磁场6和自旋耦合系数Jz)依赖所产生的影响进行了计算和讨论,并比较了两者之间的差异,得到了一些有意义的结果.