Volume 67, Number 5, September 2004
|Page(s)||721 - 727|
|Published online||01 August 2004|
Controlling ultracold atoms in multi-band optical lattices for simulation of Kondo physics
FOCUS center and MCTP, Department of Physics University of Michigan - Ann Arbor, MI 48109, USA
Accepted: 16 June 2004
We show that ultracold atoms can be controlled in multi-band optical lattices through spatially periodic Raman pulses for investigation of a class of strongly correlated physics related to the Kondo problem. The underlying dynamics of this system is described by a spin-dependent fermionic or bosonic Kondo-Hubbard lattice model even if we have only spin-independent atomic collision interaction. We solve the bosonic Kondo-Hubbard lattice model through a mean-field approximation, and the result shows a clear phase transition from the ferromagnetic superfluid to the Kondo-singlet insulator at the integer filling.
PACS: 03.75.Mn – Multicomponent condensates; spinor condensates / 03.75.Lm – Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices and topological excitations / 03.75.Ss – Degenerate Fermi gases
© EDP Sciences, 2004
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