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arXiv · 1010.5333

Effect of interactions on harmonically confined Bose-Fermi mixtures in optical lattices

Michiel Snoek·Irakli Titvinidze·Immanuel Bloch·Walter Hofstetter
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Abstract

We investigate a Bose-Fermi mixture in a three-dimensional optical lattice, trapped in a harmonic potential. Using Generalized Dynamical Mean-Field theory, which treats the Bose-Bose and Bose-Fermi interaction in a fully non-perturbative way, we show that for experimentally relevant parameters a peak in the condensate fraction close to the point of vanishing Bose-Fermi interaction is reproduced within a single band framework. We identify two physical mechanisms contributing to this effect: the spatial redistribution of particles when the interspecies interaction is changed and the reduced phase space for strong interactions, which results in a higher temperature at fixed entropy.

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Michiel Snoek, Irakli Titvinidze, Immanuel Bloch, Walter Hofstetter. 2011-04-15. Effect of interactions on harmonically confined Bose-Fermi mixtures in optical lattices. https://doi.org/10.1103/physrevlett.106.155301

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