title: Average local ionization energies in the Hartree-Fock and Kohn-Sham theories.
abstract: We explore the connection between average local ionization energies computed within the Hartree-Fock (HF) and the Kohn-Sham (KS) frameworks, focusing on exchange-only KS theory. We find that they are connected through a local quantity for which good approximations exist; I(HF)(r) = I(KS)(r) + DeltaV(X)(r). This allows determination of HF local ionization energies from exchange-only KS calculations without utilizing a nonlocal potential. We also suggest interesting research directions that emerge during our analysis.
authors.affiliation: Department of Chemistry, Duke University, Durham, North Carolina 27708, USA. felipe.bulat@duke.edu
authors.forename: Felipe A
authors.initials: FA
authors.lastname: Bulat
authors.forename: Mel
authors.initials: M
authors.lastname: Levy
authors.forename: Peter
authors.initials: P
authors.lastname: Politzer