The canonical transformation method is proposed for symplectic conservative perturbation approximation.

然后给出正则变换的摄动保辛方法。

The damped harmonic Hamiltonian is infered from harmonic Hamiltonian, by introducing the canonical transformation.

从线性谐振子哈氏量出发, 通过正则变换,得到了受迫阻尼谐振子哈氏量.

Based on LLP canonical transformation, a different polaron ground-state which includes the two-phonon correlation is adopted to calculate the ground-state energy of coulomb bound magnetopolaron.

在LLP正则变换基础之上，引入线性组合算符，选取一个包含双声子关联效应的基态计算库仑束缚磁极化子的基态能量。