Asymptotical solution of infinite-dimensional Hubbard model

Abstract

We present an asymptotically exact solution of the $\infty -d$ Hubbard model at a special interaction strength $U_T$ corresponding to the strong-coupling Fermi-liquid fixed point. This solution is intimately related to the Toulouse limit of the single-impurity Kondo model and the symmetric Anderson model in its strong-coupling limit.

12 pages, no figures, Revtex 3.0. (to appear in Phys. Rev. B)

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