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VOLUME 57 (1993) | ISSUE 9 | PAGE 575
Ground state of U= \propto Hubbard model. Exact solution for two holes
A many-electron singlet state is constructed and the exact solution of the two-hole Schrodinger equation with the U~ oo Hubbard Hamiltonian is found. It is shown that the singlet-state energy is lower than the energy of the saturated ferromagnetic state.