Abstract
We prove by a simple computation that a suitable coupling to the positronic sector lowers the energy of the purely electronic minimizer of the electron–positron Hartree–Fock functional.
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Aschbacher, W.H. Lowering the Hartree–Fock Minimizer by Electron–Positron Pair Correlation. Letters in Mathematical Physics 70, 29–41 (2004). https://doi.org/10.1007/s11005-004-3501-6
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DOI: https://doi.org/10.1007/s11005-004-3501-6