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Disorder-driven non-Fermi liquid behavior in Kondo alloys
E. Miranda, V. Dobrosavljevic, G. Kotliar
We demonstrate that a model of disordered Anderson lattices can account for many non-Fermi liquid features observed in a number of Kondo alloys. Due to the exponential nature of th…
Band Degeneracy and Mott Transition: Dynamical Mean Field Study
Henrik Kajueter, Gabriel Kotliar
We investigate the Mott transition in infinite dimensions in the orbitally degenerate Hubbard model. We find that the qualitative features of the Mott transition found in the one b…
The Local Impurity Self Consistent Approximation (LISA) to Strongly Correlated Fermion Systems and the Limit of Infinite Dimensions
A. Georges, G. Kotliar, W. Krauth +1
We review the dynamical mean-field theory of strongly correlated fermion systems which is based on a mapping of lattice models onto quantum impurity models subject to a self-consis…
Toulouse Points and Non-Fermi Liquid States in the Mixed Valence Regime of the Generalized Anderson Model
Gabriel Kotliar, Qimiao Si
We study the mixed valence regime of a generalized Anderson impurity model using the bosonization approach. This single impurity problem is defined by the Anderson model…
Optical Conductivity in Mott-Hubbard Systems
M. J. Rozenberg, G. Kotliar, H. Kajueter +4
We study the transfer of spectral weight in the optical spectra of a strongly correlated electron system as a function of temperature and interaction strength. Within a dynamical m…
The Metal-Insulator Transition in the Hubbard Model at Zero Temperature II
Marcelo J. Rozenberg, Goetz Moeller, Gabriel Kotliar
We study the metal-to-insulator transition of the Hubbard model at zero temperatures in infinite dimensions. The coexistence of metallic and insulating solutions for a finite range…
Critical Properties of the Mott Transition in the Hubbard Model
Goetz Moeller, Qimiao Si, Gabriel Kotliar +1
We introduce a systematic low-energy approach to strongly correlated electron systems in infinite dimensions, and apply it to the problem of the correlation-induced metal-insulator…
Quantum Chemistry, Anomalous Dimensions, and the Breakdown of Fermi Liquid Theory in Strongly Correlated Systems
Gabriel Kotliar, Qimiao Si
We formulate a local picture of strongly correlated systems as a Feynman sum over atomic configurations. The hopping amplitudes between these atomic configurations are identified a…
Superconductivity in the Two-Band Hubbard Model in Infinite Dimensions
Antoine Georges, Gabriel Kotliar, Werner Krauth
We study a two-band Hubbard model in the limit of infinite dimensions, using a combination of analytical methods and Monte-Carlo techniques. The normal state is found to display va…