ZFS
Zero-field splitting
ψ, φ, ϕ
one-electron functions, orbitals
Ψ
N-electron wave function
Φ
Slater determinant
e
Ψ
Projection of Ψ on a model space
e
Ψ
0
Normalized projection of Ψ on a model space
e
Ψ
?
Orthonormalized projection of Ψ on a model space
e
Ψ y
Biorthogonal projection of Ψ on a model space
e
Ψ
0y
Normalized biorthogonal projection of Ψ on a model space
E
(n)
n-th order correction to the energy
Ψ
(n)
n-th order correction to the wave function
xvi
Acronyms