Strong electronic correlations are often associated with the proximity of a Mott-insulating
state. In recent years however, it has become increasingly clear that the Hund's rule …

We investigate the Mott transitions in two-band Hubbard models with different bandwidths.
Applying dynamical mean field theory, we discuss the stability of itinerant quasiparticle …

We study the interplay of crystal field splitting and Hund coupling in a two-orbital model
which captures the essential physics of systems with two electrons or holes in the eg shell …

It is shown how, in multiband materials, the Hund's coupling plays a crucial role in tuning the
degree of electronic correlation. While in half-filled systems it enhances the correlations, in …

The Mott-Hubbard metal-insulator transition is investigated in a two-band Hubbard model
within dynamical mean-field theory. To this end, we use a suitable extension of Wilson's …

We propose to calculate spectral functions of quantum impurity models using the time
evolving block decimation (TEBD) for matrix product states. The resolution of the spectral …

The two-orbital degenerate Hubbard model with distinct hopping integrals is studied by
combining dynamical mean-field theory with quantum Monte Carlo simulations. The role of …

We investigate the role of the bandwidth difference in the Mott metal-insulator transition of a
two-band Hubbard model in the limit of infinite dimensions by means of a Gutzwiller …

We present a self-consistent numerical approach to solve the Gutzwiller variational problem
for general multiband models with arbitrary on-site interaction. The proposed method …

Using the dynamical mean field theory it is shown that interorbital Coulomb interactions in
nonisotropic multiorbital materials give rise to a single Mott transition. Nevertheless, narrow …