Phys. Rev. Lett. 87, 066403 (2001) [4 pages]Class of Exactly Solvable Pairing ModelsReceived 11 January 2001; published 23 July 2001 We present three classes of exactly solvable models for fermion and boson systems, based on the pairing interaction. These models are solvable in any dimension. As an example we show the first results for fermions interacting with repulsive pairing forces in a two-dimensional square lattice. In spite of the repulsive pairing force the exact results show attractive pair correlations. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.87.066403
DOI:
10.1103/PhysRevLett.87.066403
PACS:
71.10.Li, 74.20.Fg
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