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A new construction of thermodynamic mean-field theories of itinerant fermions: application to the Falicov-Kimball model

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Zeitschrift für Physik B Condensed Matter

Abstract

We present a general scheme for a construction of mean-field-like theories of itinerant lattice fermions based on solutions to the exactd=∞ grand canonical potential. The general construction is explicitly demonstrated on the exactly solvabled=∞ Falicov-Kimball model. A mean-field zero-temperature behaviour of this sample model is studied quantitatively.

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Author notes

  1. V. Janiš

    Present address: Institute of Physics, Czech. Acad. Sci., Na Slovance 2, CS-18040, Prague, Czechoslovakia

Authors and Affiliations

  1. Institut für Physik der Universität, Postfach 500 500, W04600, Dortmund 50, Federal Republic of Germany

    V. Janiš

  2. Institut für Theoretische Physik der RWTH, Templergraben 55, W-5100, Aachen, Federal Republic of Germany

    V. Janiš

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  1. V. Janiš
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Work supported by the A. von Humboldt Foundation.

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Janiš, V. A new construction of thermodynamic mean-field theories of itinerant fermions: application to the Falicov-Kimball model. Z. Physik B - Condensed Matter 83, 227–235 (1991). https://doi.org/10.1007/BF01309423

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  • DOI: https://doi.org/10.1007/BF01309423

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