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

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

2007-09-11

arxiv.org/abs/0709.1669v2

Phys. Rev. Lett. 100, 056403 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages and 5 figures

Scientific paper

10.1103/PhysRevLett.100.056403

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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