Repulsive Interaction between Two Ground-State Helium Atoms
Repulsive Interaction between Two Ground-State Helium Atoms is a scholarly work, published in 1962 in ''Physical Review''. The main subjects of the publication include ground state, electron, wave function, physics, energy, Van der Waals' force, density functional theory, noble gas compound, atomic orbital, atomic physics, Sigma, and superfluid helium-4. The repulsion energy between two ground-state helium atoms (${^{1}\ensuremath{\Sigma}_{g}}^{+}$ state of ${\mathrm{He}}_{2}$) has been investigated in the single-configuration MO (molecular orbital) approximation and then further refined to include the effects of electron correlation by the inclusion of super-position of configurations.