A general connection between the reduced fidelity susceptibility and quantum phase transitions is given in terms of the relation between reduceddensitymatrix and ground-state energy.
根据约化密度矩阵与基态能量之间的关系,我们给出了约化保真率和量子相变之间的一般关系。
2
This method is not from the first principle. A better approach is based on the reduceddensitymatrix, which eliminate the infinite number of the freedoms of the dissipative environment.