| speaker: | Lorenzo De Leo Department of Physics and Astronomy, Rutgers University, Piscataway, USA & Centre de Physique Théorique, Ecole Polytechnique, 91128 Palaiseau Cedex, France |
| time: | Wed., 22.08., 10:30 - 11:20 |
One of the major achievements of dynamical mean field theory is the description of the Mott transition. Still DMFT is not enough to explain the properties of realistic strongly correlated systems close to a Mott transition. In this respect the cluster extensions of DMFT represent a promising tool to achieve a more realistic description of the Mott transition. These extensions rely essentially on the solution of clusters of Anderson impurities. We analyze systematically the simplest clusters (dimer, trimer, and tetramer) of Anderson impurities, focusing on those universal properties that might help to identify a unified framework to describe a realistic Mott transition.