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Commensurate mixtures of ultra-cold atoms in one dimension

L. Mathey
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Abstract

We study binary mixtures of ultra-cold atoms, confined to one dimension in an optical lattice, with commensurate densities. Within a Luttinger liquid description, which treats various mixtures on equal footing, we derive a system of renormalization group equations at second order, from which we determine the rich phase diagrams of these mixtures. These phases include charge/spin density wave order, singlet and triplet pairing, polaron pairing, and a supersolid phase. Various methods to detect our results experimentally are discussed.

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L. Mathey. 2007-02-24. Commensurate mixtures of ultra-cold atoms in one dimension. https://doi.org/10.1103/physrevb.75.144510

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