Correlated pairs in the attractive Hubbard model |
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| Authors: | P Pincus P Chaikin CF Coll |
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| Institution: | Department of Physics, University of California, Los Angeles, California 90024, U.S.A. |
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| Abstract: | The attractive Hubbard Model is considered in the strong coupling limits (U?t) by treating the hopping integral, t, as a perturbation. A phase diagram emerges with two critical temperatures: itkBitTct2/U and itkBTUU/4. For T<Tc, there is regime of strongly correlated pairs reminescent of superconductivity. For Tc<T<TU, there is a domain of uncorrelated pairs. For T>TU, one has a normal metal. |
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