Compact Correlated Hylleraas Wave Functions for the Lithium Isoelectronic Sequence: Ground-State Energies and a Complex-Rotation Assessment
The nonrelativistic ground-state energy of the (1s 2 2s) 2 S term of atomic lithium and five members of its isoelectronic sequence (Be + , B 2 + , C 3 + , N 4 + , O 5 + ; Z = 3–8) is computed with a correlated Hylleraas-type trial function combined with the complex-rotation (complex-scaling) transfo...