Theory of the Marginal Fermi Liquid spectrum in the local treatment of the large - U Falicov - Kimball Model
نویسنده
چکیده
The Marginal Fermi Liquid (MFL) hypothesis proposed by Varma et .al is derived from a consistent treatment of local spin fluctuations in the Falicov-Kimball (FK) Model. Within an infinite-dimensional mean-field approach, which is exact for this model in d = ∞, a marginal Fermi liquid susceptibility and single particle self-energy are obtained near half-filling, and a Fermi liquid phase is recovered sufficiently away from half-filling, in agreement with indications from experiments which probe the normal state of cuprates as a function of doping.
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