【摘要】 研究两粒子的XYZ海森伯模型的热纠缠态,并讨论了这个系统哈密顿量中的参数和温度对纠缠度的影响.结果表明:对于一定的温度,耦合常数的增加能够增加纠缠度,但是纠缠度却随着温度的增加而减小,直到临界温度时纠缠度为零.更多还原

【Abstract】 In this paper,study the thermal entanglement of a two-qubit XYZ Heisenberg model,and show the influences for the concurrence of this system in terms of the parameters of the Hamiltonian and T.Finally,obtain that increasing the absolute value of J increases the concurrence for a given T,but the concurrence decreases with the increase of temperature until it reaches the critical value of T,and becomes zero.更多还原