Spin-disentangled exact diagonalization of repulsive Hubbard systems: superconducting pair propagation
Spin-disentangled exact diagonalization of repulsive Hubbard systems: superconducting pair propagation
By means of a novel exact-diagonalization technique, we show that bound pairs propagate between repulsive Hubbard clusters in a superconducting fashion. The size of the matrices that must be handled depends on the number of fermion configurations per spin, which is of the order of the square root of the …