Double expansion with respect to $U$ and $1/(N-1)$ for an SU($N$) impurity Anderson model

$$1/(N - 1)$$ Expansion for an SU(N) Impurity Anderson Model: A New Large-N Scheme Based on a Perturbation Theory in U

$1/(N-1)$ expansion, NRG, NCA, and exact $T\to \infty$ limit for the Green's function of an SU($N$) Anderson impurity

Functional expansion of the Anderson and SU(N) lattice models

1/N expansion of the nonequilibrium single-impurity Anderson Model

Three Body Correlations in a Non-equilibrium Current through an SU(N) Anderson Impurity at Arbitrary Fillings

Fermi liquid corrections for non-equilibrium transport through an SU(N) Anderson impurity with arbitrary electron fillings