Real-space cluster dynamical mean-field theory: Center-focused extrapolation on the one- and two particle-levels

Dynamical Mean Field and Dynamical Cluster Approximations

We present a pedagogical discussion of the dynamical mean field and dynamical cluster approximations. PACS: ...

Dynamical Mean Field Theory equations on nearly real frequency axis

The Iterated Perturbation Theory (IPT) equations of the Dynamical Mean Field Theory (DMFT) for the half-filled Hubbard model, are solved on nearly real frequencies at various values of the Hubbard parameters, U , to investigate the nature of metal-insulator transition (MIT) at finite temperatures. This method avoids the instabilities associated with the infamous Padé analytic continuation and r...

Cluster dynamical mean field theory of the Mott transition.

We address the nature of the Mott transition in the Hubbard model at half-filling using cluster dynamical mean field theory (DMFT). We compare cluster-DMFT results with those of single-site DMFT. We show that inclusion of the short-range correlations on top of the on-site correlations does not change the order of the transition between the paramagnetic metal and the paramagnetic Mott insulator,...

Dynamical mean-field theory

Dynamical Mean - Field Theory and Its Applications to Real Materials

Theoretische Physik III, Elektronische Korrelationen und Magnetismus, Institut für Physik, Universität Augsburg, 86135 Augsburg, Germany Max-Planck-Institut für Festkörperforschung, 70569 Stuttgart, Germany Institut für Theoretische Physik, Universität Göttingen, Friedrich-Hund-Platz 1, D-37077 Göttingen, Germany Institute of Metal Physics, S. Kovalevskoj Str. 18, Ekaterinburg GSP-170, 620219 R...