Based on a quantum Langevin equation and its corresponding Hamiltonian within a c-number formalism we calculate the vibrational dephasing rate of a cubic oscillator. It is shown that leading order quantum correction due to anharmonicity of the potential makes a significant contribution to the rate and the frequency shift. We compare our theoretical estimates with those obtained from experiments for small diatomics $N_2$, $O_2$ and $CO$.
展开▼
机译：基于一个量子兰格文方程及其在c数形式中的相应哈密顿量，我们计算了立方振荡器的振动相移速率。结果表明，由于电势的非谐性导致的前导量子校正对速率和频移做出了重大贡献。我们将理论估计值与从小硅藻$ N_2 $，$ O_2 $和$ CO $实验获得的估计值进行比较。
展开▼
