Gerisch, T.; Rieckers, A. - In: Physica A: Statistical Mechanics and its Applications 242 (1997) 3, pp. 439-466
We compare the weakly inhomogeneous BCS-model of a previous investigation with a weak perturbation of a symmetrized … results on a stable gap and macroscopic phase are thus transferable from the BCS- to this Hubbard model. Only the localization …