Knowledge Bank

The $H2$ ground state potential has been recalculated in double precision by Kolos and $Wolniewicz1$ using a 100-term electronic wave-function. Dunham coefficients $ai$ for this potential are here determined. From these $ai$ Born-Oppenheimer spectroscopic constants $Y\ell j$ are found. Adiabatically corrected $Y\ell j$ are also calculated. Difficulties resulting from reliance on the virial theorem are described. From Kolos-Wolniewicz vibration-rotation eigenenergies theoretical values of $Bv$, $Dv$, and $Hv$ are determined. The theoretical $Y\ell j,Bv,Dv$, and $Hv$ are compared with experimental values.