Class of exactly solvable pairing models.
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.
Dukelsky
J
J
Instituto de Estructura de la Materia, CSIC, Serrano 123, 28006 Madrid, Spain.
Esebbag
C
C
Schuck
P
P