Mott-Hubbard and Anderson transitions in dynamical mean-field theory

摘要

The Anderson-Hubbard Hamiltonian at half-filling is investigated within dynamical mean-field theory at zero temperature. The local density of states is calculated by taking the geometric and arithmetic mean, respectively. The non-magnetic ground state phase diagrams obtained within the different averaging schemes are compared. (c) 2005 Elsevier B.V. All rights reserved.