A Constraint on the Anomalous Green's Function
arXiv:cond-mat/9612248 · doi:10.1142/S0217984996000614
Abstract
It is shown that the physical constraint of the Anomalous Green's function gives a natural pairing condition. The resulting self-consistency equation is directly related to the BCS gap equation. Both inhomogeneous and homogeneous systems are considered to illustrate the importance of the constraint. Especially we find weak localization correction to the phonon-mediated interaction.
14 pages, latex, no figures