title: Mott transition of fermionic atoms in a three-dimensional optical trap.
abstract: We study theoretically the Mott metal-insulator transition for a system of fermionic atoms confined in a three-dimensional optical lattice and a harmonic trap. We describe an inhomogeneous system of several thousand sites using an adaptation of dynamical mean-field theory solved efficiently with the numerical renormalization group method. Above a critical value of the on-site interaction, a Mott-insulating phase appears in the system. We investigate signatures of the Mott phase in the density profile and in time-of-flight experiments.
authors: Institute for Theoretical Physics, University of Cologne, 50937 Cologne, Germany.
authors: R W
authors: RW
authors: Helmes
authors: T A
authors: TA
authors: Costi
authors: A
authors: A
authors: Rosch