标题： 四面体分子的泛音谱和强度在玻色子实现模型中 显示英文标题

标题： Overtone spectra and intensities of tetrahedral molecules in boson-realization models

摘要： 拉伸和弯曲振动光谱以及四面体分子中红外跃迁的强度在两种玻色子实现模型中被研究，其中拉伸和弯曲振动之间的相互作用由二次交叉项和费米共振项描述，分别称为谐波耦合和费米共振玻色子实现模型。后者是我们最近模型的发展。作为例子，这两个模型被应用于硅四氟化物的倍频光谱和强度。这些模型对已发表的实验振动本征值进行了拟合，标准偏差分别为1.956 cm$^{-1}$和0.908 cm$^{-1}$。在两个模型中计算了其所有振动的红外跃迁强度，结果与观测数据有良好的一致性。 显示英文摘要

摘要： The stretching and bending vibrational spectrum and the intensities of infrared transitions in a tetrahedral molecule are studied in two boson-realization models, where the interactions between stretching and bending vibrations are described by a quadratic cross term and by Fermi resonance terms, called harmonically coupled and Fermi resonance boson-realization model, respectively. The later is a development of our recent model. As an example, the two models are applied to the overtone spectrum and the intensities of silicon tetrafluorde. Those models provide fits to the published experimental vibrational eigenvalues with standard deviations 1.956 cm$^{-1}$ and 0.908 cm$^{-1}$, respectively. The intensities of infrared transitions of its complete vibrations are calculated in the two models, and results show a good agreement with the observed data.