Pre-Born-Oppenheimer energies, leading-order relativistic and QED corrections for electronically excited states of molecular hydrogen

Eszter Saly, Dávid Ferenc, Edit Mátyus

For rovibronic states corresponding to the $B$ and $B^{\prime }{}^1{\Sigma }_{\text{u}}^{+}$ electronic states of the hydrogen molecule, the pre-Born--Oppenheimer (four-particle) non-relativistic energ…