Electron–electron interactions appear to play qualitatively vital roles in the behavior of expanded liquid metals; these systems display phenomena that simply do not occur in a single‐electron picture. Motivated by a desire to understand such liquids, and to model electron interaction effects in liquids more generally, we show in this paper how one can formulate and solve a Hartree–Fock theory within a liquid by using liquid theory methods. The work generalizes the previous efforts of Logan and co‐workers by removing the restrictions to model band shapes and Hubbard Hamiltonians. The Pariser–Parr–Pople Hamiltonian used here has the added feature of an interatomic Coulombic interaction and therefore allows us to assess the role of interaction‐induced fluctuations in the local field at each atom. The model also requires a calculation of a quantity with the significance of a bond order, a concept of some possible utility in a wide variety of electronic‐structure‐in‐liquids problems.

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