【摘要】 采用保真度和保真率的方法研究了具有Dzyaloshinskii-Moriya(DM)相互作用的各向异性XY模型的量子相变.数值研究了保真度和保真率在量子相变点附近的行为,结果表明采用保真度和保真率方法研究该模型的量子相变切实可行.更多还原

【Abstract】 The quantum phase transition of anisotropic XY chains with Dzyaloshinskii-Moriya(DM) interaction is studied by adopting fidelity and fidelity susceptibility method.The behavior of fidelity and fidelity susceptibility near quantum phase transitions is investigated.The results show that this method is feasible to study the quantum phase transition of those chains.更多还原