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arxiv: quant-ph/0502100 · v1 · pith:N5MFQ6YVnew · submitted 2005-02-16 · 🪐 quant-ph

Supersymmetric Models for Fermions on a Lattice

classification 🪐 quant-ph
keywords modelsupersymmetricbogoliubovcoherentfermionslatticesuperpositionappear
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We investigate the large-N behaviour of simple examples of supersymmetric interactions for fermions on a lattice. Witten's supersymmetric quantum mechanics and the BCS model appear just as two different aspects of one and the same model. For the BCS model, supersymmetry is only respected in a coherent superposition of Bogoliubov states. In this coherent superposition mesoscopic observables show better stability properties than in a Bogoliubov state.

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