利用Lie代数方法得到三原子分子的代数Hamiltonian, 通过对光谱数据的拟合确定其展开系数, 再用相干态得到代数Hamiltonian的经典极限, 从而得到三原子分子的势能面. 以H2O分子为例进行了计算, 其理论值与实验结果一致.
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