Friedel sum rule for an interacting multiorbital quantum dot
arXiv:cond-mat/0608473 · doi:10.1103/PhysRevLett.97.076801
Abstract
A generalized Friedel sum rule is derived for a quantum dot with internal orbital and spin degrees of freedom. The result is valid when all many-body correlations are taken into account and it links the phase shift of the scattered electron to the displacement of its SPECTRAL density into the dot.
RevTeX 4.0, 5 pages