On the S0(0) and S1(0) spectra of the H2-H2dimer

Abstract
The authors present computed frequencies of the S0(0) transitions between bound and pseudo-bound levels of the para-H2-para-H2 dimer. The calculations account for the interchange symmetry of the H2 molecules. Analogous calculations of the S1(0) spectrum and found to be in satisfactory agreement with the laboratory measurements of McKellar and Welsh (1974). The authors' results lend support to the proposed identification of features in the far infrared spectra of Jupiter and Saturn with S0(0) transitions of the H2-H2 dimer.