A pair potential supporting a mixed mean-field / BCS- phase
arXiv:math-ph/9904027 · doi:10.1016/S0550-3213(99)00566-0
Abstract
We construct a Hamiltonian which in a scaling limit becomes equivalent to one that can be diagonalized by a Bogoliubov transformation. There may appear simultaneously a mean-field and a superconducting phase. They influence each other in a complicated way. For instance, an attractive mean field may stimulate the superconducting phase and a repulsive one may destroy it.
11 pages, 5 figures, LaTeX