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Superfrustration of charge degrees of freedom

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Abstract

We review recent results, obtained with P. Fendley, on frustration of quantum charges in lattice models for itinerant fermions with strong repulsive interactions. A judicious tuning of kinetic and interaction terms leads to models possessing supersymmetry. In such models frustration takes the form of what we call superfrustration: an extensive degeneracy of supersymmetric ground states. We present a gallery of examples of superfrustration on a variety of 2D lattices.

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Authors and Affiliations

  1. Institute for Theoretical Physics, University of Amsterdam, Valckenierstraat 65, 1018, XE, Amsterdam, the Netherlands

    L. Huijse & K. Schoutens

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  1. L. Huijse
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  2. K. Schoutens
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Correspondence to L. Huijse.

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Huijse, L., Schoutens, K. Superfrustration of charge degrees of freedom. Eur. Phys. J. B 64, 543–550 (2008). https://doi.org/10.1140/epjb/e2008-00150-9

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  • DOI: https://doi.org/10.1140/epjb/e2008-00150-9

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