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。
A general connection between the reduced fidelity susceptibility and quantum phase transitions is given in terms of the relation between reduced density matrix and ground-state energy.
两个两能级原子置于外部环境(热库)中，当计及原子偶极间的相互作用时，通过研究两个原子约化密度矩阵，分析原子状态消相干规律。
We study a pair of two-level atoms reducible density rectangular array when atoms by dipole-dipole interaction are put in a thermal reservoir. Decoherence of atoms is analyzed.
两个两能级原子置于外部环境(热库)中，当计及原子偶极间的相互作用时，通过研究两个原子约化密度矩阵，分析原子状态消相干规律。
We study a pair of two-level atoms reducible density rectangular array when atoms by dipole-dipole interaction are put in a thermal reservoir. Decoherence of atoms is analyzed.
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