Induced Interactions for Ultracold Fermi Gases in Optical Lattices

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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2009-06-16

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Department of Applied Physics

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en

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4

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Physical Review Letters, Volume 102, issue 24, pp. 1-4

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.

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10.1103/PhysRevLett.102.245301

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Kim, D H, Törmä, P & Martikainen, J P 2009, ' Induced Interactions for Ultracold Fermi Gases in Optical Lattices ', Physical Review Letters, vol. 102, no. 24, 245301, pp. 1-4 . https://doi.org/10.1103/PhysRevLett.102.245301

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https://urn.fi/URN:NBN:fi:aalto-201609234429

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[article-cris] Perustieteiden korkeakoulu / SCI