Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2000-10-20
Physics
Condensed Matter
Strongly Correlated Electrons
6 pages, 2 eps format figures
Scientific paper
10.1016/S0375-9601(01)00201-8
We propose a fully microscopic theory of the anomalous normal state of the attractive Hubbard model in the low-density limit that accounts for propagator renormalization. Our analytical conclusions, which focus on the thermodynamic instabilities contained in the self-consistent equations associated with our formulation, have been verified by our comprehensive numerical study of the same equations. The resulting theory is found to contain no transitions at non-zero temperatures for all finite lattices, and we have confirmed, using our numerical studies, that this behaviour persists in the thermodynamic limit for low-dimensional systems.
Beach K. S. D.
Gooding R. J.
Marsiglio Frank
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