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cond-mat1997
Beyond the Hubbard-I Solution with a One-Pole Self-Energy at Half-Filling with the Moment Approach: Non-Linear Effects
J. J. Rodriguez-Nunez, M. A. de Menezes
We have postulated a single pole for the self-energy, , looking for the consequences on the one-particle Green function, in the Hubbard model. We find…
cond-mat.str-el1997
Beyond the Hubbard-I Solution with a One-Pole and a Two-Pole Self-Energy: Moment Approach
J. J. Rodriguez-Nunez, M. Argollo de Menezes
We have postulated a single pole for the self-energy looking for the consequences on the one-particle Green function, G(k,w), in the Hubbard model. We find that G(k,w) satisfies th…