Strong-interaction limit of an adiabatic connection in Hartree-Fock theory

Abstract

We show that the leading term in the strong-interaction limit of the adiabatic connection that has as weak-interaction expansion the Moeller-Plesset perturbation theory can be fully determined from a functional of the Hartree-Fock density. We analyze this functional and highlight similarities and differences with the strong-interaction limit of the density-fixed adiabatic connection case of Kohn-Sham density functional theory.

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• Complex Adiabatic Connection: a Hidden Non-Hermitian Path from Ground to Excited States
• Toward more accurate adiabatic connection approach for multireference wave functions
• $\mathcal{P}\mathcal{T}$-Symmetry in Hartree-Fock Theory
• Comparing correlation components and approximations in Hartree-Fock and Kohn-Sham theories via an analytical test case study