Dynamical mean-field theory

Nonequilibrium dynamical mean-field theory

Dynamical Mean-field Theory for Correlated Lattice Fermions

Dynamical mean-field theory (DMFT) is a successful method to investigate interacting lattice fermions. In these lecture notes we present an introduction into the DMFT for lattice fermions with interaction, disorder and external inhomogeneous potentials. This formulation is applicable to electrons in solids and to cold fermionic atoms in optical lattices. We review here our investigations of the...

Dynamical mean-field theory for molecular electronics: Electronic structure and transport properties

We present an approach for calculating the electronic structure and transport properties of nanoscopic conductors that takes into account the dynamical correlations of strongly interacting d or f electrons by combining density-functional theory calculations with the dynamical mean-field theory. While the densityfunctional calculation yields a static mean-field description of the weakly interact...

Dynamical Mean Field Theory of the Antiferromagnetic Metal to Antiferromagnetic Insulator Transition

We study the zero temperature antiferromagnetic metal to antiferromagnetic insulator transition using dynamical mean field theory and exact diagonalization methods. We find two qualitatively different behaviors depending on the degree of magnetic correlations. For strong correlations combined with magnetic frustration, the transition can be described in terms of a renormalized Slater theory, wi...

Dynamical mean-field theory and electronic structure calculations

We formulate the dynamical mean field theory directly in the continuum. For a given definition of the local Green’s function, we show the existence of a unique functional, whose stationary point gives the physical local Green’s function of the solid. We present the diagrammatic rules to calculate it perturbatively in the interaction. Approximations which may be used in the strong coupling regim...