Induced Interactions for Ultracold Fermi Gases in Optical Lattices

D. H. Kim; P. Törmä; J. P. Martikainen

doi:10.1103/PhysRevLett.102.245301

Induced Interactions for Ultracold Fermi Gases in Optical Lattices

D. H. Kim^*, P. Törmä, J. P. Martikainen

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

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Abstract

We investigate the effect of optical lattices on the BCS superfluidity by using the Gorkov-Melik-Barkhudarov (GMB) correction for a two-component Fermi gas. We find that the suppression of the order parameter is strongly enhanced by the lattice effects. The predictions made by the GMB corrections are in qualitative and, for the cases studied, quantitative agreement with previous quantum Monte Carlo results. We discuss how the GMB correction extends the validity of the mean-field theory to a wider range of tunable optical lattice systems in different dimensions.

Original language	English
Article number	245301
Pages (from-to)	1-4
Number of pages	4
Journal	Physical Review Letters
Volume	102
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.102.245301
Publication status	Published - 16 Jun 2009
MoE publication type	A1 Journal article-refereed

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