Metal-insulator transitions are accompanied by huge resistivity changes, even over tens of
orders of magnitude, and are widely observed in condensed-matter systems. This article …

We review the dynamical mean-field theory of strongly correlated electron systems which is
based on a map** of lattice models onto quantum impurity models subject to a self …

In the early 1970s, Wilson developed the concept of a fully nonperturbative renormalization
group transformation. When applied to the Kondo problem, this numerical renormalization …

This article reviews quantum cluster theories, a set of approximations for infinite lattice
models which treat correlations within the cluster explicitly, and correlations at longer length …

The calculation of the electronic properties of materials is an important task of solid-state
theory, albeit particularly difficult if electronic correlations are strong, eg, in transition metals …

We present a new method for calculating directly the one-particle self-energy of an impurity
Anderson model with Wilson's numerical renormalization group method by writing this …

The zero-temperature transition from a paramagnetic metal to a paramagnetic insulator is
investigated in the dynamical mean field theory for the Hubbard model. The self-energy of …

We study the limits of the energy resolution that can be achieved in the calculations of
spectral functions of quantum impurity models using the numerical renormalization group …

Wilson's numerical renormalization group method for the calculation of dynamic properties
of impurity models is generalized to investigate the effective impurity model of the dynamical …

Thermodynamic properties are presented for four magnetic impurity models describing the
scattering of fermions from a localized orbital at an energy-dependent rate Γ (ε) which …