1.2 Matrix Elements for Many-Electron States
17
as suitable linear combinations of the “primitive” states | aγ,kγ , γ, γ
= α, β.
Evaluate the spin-free expressions for the singlet and triplet excitation energies
1 E ak (1) and
3 E ak (1), respectively.
Reference
1. Messiah A (1967) Quantum mechanics. North-Holland Publishing Company, Amsterdam
17
as suitable linear combinations of the “primitive” states | aγ,kγ , γ, γ
= α, β.
Evaluate the spin-free expressions for the singlet and triplet excitation energies
1 E ak (1) and
3 E ak (1), respectively.
Reference
1. Messiah A (1967) Quantum mechanics. North-Holland Publishing Company, Amsterdam