SEARCH Articles Figures Tables Breit interaction for the helium ground state Ground state energy of helium Ground state of the helium atom Ground state wavefunctions (helium) Helium atom ground-state Helium ground state electronic configuration, 17 18 Helium ground state energy Helium ground state energy calculations Helium ground-state correlations Perturbation Treatment of the Helium-Atom Ground State Perturbation method helium ground state application Recasting of correlated wavefunctions in helium (ground state) The helium atom ground state