Frequency-Dependent Polarizability ofH2Calculated by Many-Body Theory

Abstract

Many-body perturbation theory is used to calculate the parallel and perpendicular dynamic polarizabilities of molecular hydrogen. High-order terms in the perturbation expansion are included and the poles of $\alpha \left(\omega \right)$ are calculated. Results for the dynamic dipole polarizabilities and for the molecular anisotropy are in good agreement with experiment.