We study electronic phase transitions in the half-filled ionic Hubbard model with an on-site
Coulomb repulsion U and an ionic energy Δ by using the coherent potential approximation …

We consider the problem of scattering and binding of two interacting spin-(1/2) fermions on a
one-dimensional tight-binding superlattice with a period of twice the lattice spacing. We …

We investigate the quantum phase transitions in the half-filled ionic Hubbard model on a two-
dimensional (2D) square lattice using the variational cluster approach (VCA). We present …

There is currently a great interest in the physics of degenerate quantum gases and low-
energy few-body scattering due to the recent experimental advances in manipulation of …

The Quantum Monte Carlo simulations of the ionic Hubbard model on a two-dimensional
square lattice at half filling were performed. The method based on the direct-space …

In this thesis dynamical mean-field methods in combination with a continuous-time quantum
Monte Carlo impurity solver are used to study selected open problems of condensed matter …

Barrier planes described by the Ionic Hubbard model and sandwiched between metallic
planes on both sides are studied using unrestricted Hartree Fock. For zero onsite …

There is currently a great interest in the physics of degenerate quantum gases and low-
energy few-body scattering due to the recent experimental advances in manipulation of …

We present the results of numerical studies for selected materials with strongly correlated
electrons using a combination of the local-density approximation and dynamical mean-field …