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arXiv · 0709.1669

Mott transition of fermionic atoms in a three-dimensional optical trap

R. W. Helmes·T. A. Costi·A. Rosch
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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.

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R. W. Helmes, T. A. Costi, A. Rosch. 2008-03-28. Mott transition of fermionic atoms in a three-dimensional optical trap. https://doi.org/10.1103/physrevlett.100.056403

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