Operator Method in Solving Non-Linear Equations of the Hartree-Fock Type
The operator method is used to construct the solutions of the problem of the polaron in the strong coupling limit and of the helium atom on the basis of the Hartree-Fock equation. E00 = -0.108 512 8052α2 is obtained for the polaron ground-state energy. Energies for 2s and 3s states are also calculated. The other excited states are briefly discussed.
A. Le and L. I. Komarov, "Operator Method in Solving Non-Linear Equations of the Hartree-Fock Type," Journal of Physics: Condensed Matter, vol. 10, no. 50, IOP Publishing Ltd., Dec 1998.
The definitive version is available at https://doi.org/10.1088/0953-8984/10/50/007
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