Superfluid-insulator Transition in Fermi-Bose Mixtures and the Orthogonality Catastrophe

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Superfluid-insulator Transition in Fermi-Bose Mixtures and the Orthogonality Catastrophe

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Title: Superfluid-insulator Transition in Fermi-Bose Mixtures and the Orthogonality Catastrophe
Author: Refael, Gil; Demler, Eugene A.

Note: Order does not necessarily reflect citation order of authors.

Citation: Refael, Gil, and Eugene Demler. 2008. Superfluid-insulator transition in Fermi-Bose mixtures and the orthogonality catastrophe. Physical Review B 77:144511.
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Abstract: The superfluid-insulator transition of bosons is strongly modified by the presence of Fermions. Through an imaginary-time path integral approach, we derive the self-consistent mean-field transition line, and account for both the static and the dynamic screening effects of the fermions. We find that an effect akin to the fermionic orthogonality catastrophe, arising from the fermionic screening fluctuations, suppresses superfluidity. We analyze this effect for various mixture parameters and temperatures, and consider possible signatures of the orthogonality catastrophe effect in other measurables of the mixture.
Published Version: doi://10.1103/PhysRevB.77.144511
Other Sources: http://arxiv.org/abs/0712.1828v1
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:13421139
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