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Accueil du site > Publications > Publications 2009 > Three-Component Fermi Gas in a one-dimensional Optical Lattice

Three-Component Fermi Gas in a one-dimensional Optical Lattice

P. Azaria, S. Capponi, P. Lecheminant

par Sylvain Capponi - 4 novembre 2008

We investigate the effect of the anisotropy between the s-wave scattering lengths of a three-component atomic Fermi gas loaded into a one-dimensional optical lattice. We find four different phases which support trionic instabilities made of bound states of three fermions. These phases distinguish themselves by the relative phases between the 2k_F atomic density waves fluctuations of the three species. At small enough densities or strong anisotropies we give further evidences for a decoupling and the stabilization of more conventional BCS phases. Finally our results are discussed in light of a recent experiment on ^{6}Li atoms.