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Superfrustration of charge degrees of freedom
Authors:L. Huijse  K. Schoutens
Affiliation:1. Institute for Theoretical Physics, University of Amsterdam, Valckenierstraat 65, 1018, XE, Amsterdam, the Netherlands
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.
Keywords:
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