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New symmetry properties of a class of Hubbard models

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Zeitschrift für Physik B Condensed Matter

Abstract

In the Hubbard model for crystals of the “AB-type” all information on the system is already contained in the set of eigenstates where the number of sites equals the number of electrons or exceeds it by one. We prove this by deriving relations among the eigenstates with different numbers of particles which do not rely on the well-known transformation of electrons to holes. In this context a new good quantum number is identified. We report on results for the one-dimensional case.

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Authors and Affiliations

  1. Institut für Theoretische Physik, Rheinisch-Westfälische Technische Hochschule, Templergraben 55, D-5100, Aachen, Germany

    Ernst Nowak

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  1. Ernst Nowak
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Nowak, E. New symmetry properties of a class of Hubbard models. Z. Physik B - Condensed Matter 45, 173–176 (1981). https://doi.org/10.1007/BF01293332

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  • DOI: https://doi.org/10.1007/BF01293332

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