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Landau-Fermi liquid analysis of the 2D t-t' Hubbard model

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Abstract:

We calculate the Landau interaction function f (k,k') for the two-dimensional t-t' Hubbard model on the square lattice using second and higher order perturbation theory. Within the Landau-Fermi liquid framework we discuss the behavior of spin and charge susceptibilities as function of the onsite interaction and band filling. In particular we analyze the role of elastic umklapp processes as driving force for the anisotropic reduction of the compressibility on parts of the Fermi surface.

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Authors and Affiliations

  1. Theoretische Physik, ETH-Hönggerberg, 8093 Zürich, Switzerland, , , , , , CH

    P.A. Frigeri, C. Honerkamp & T.M. Rice

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  1. P.A. Frigeri
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  2. C. Honerkamp
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  3. T.M. Rice
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Received 18 March 2002 Published online 9 July 2002

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Frigeri, P., Honerkamp, C. & Rice, T. Landau-Fermi liquid analysis of the 2D t-t' Hubbard model. Eur. Phys. J. B 28, 61–70 (2002). https://doi.org/10.1140/epjb/e2002-00200-4

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  • DOI: https://doi.org/10.1140/epjb/e2002-00200-4

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