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dc.contributor.authorPowell, Stephen
dc.contributor.authorSachdev, Subir
dc.contributor.authorBüchler, Hans Peter
dc.date.accessioned2019-09-27T13:14:38Z
dc.date.issued2005
dc.identifier.citationPowell, Stephen, Subir Sachdev, and Hans Peter Büchler. 2005. “Depletion of the Bose-Einstein Condensate in Bose-Fermi Mixtures.” Physical Review B 72 (2). https://doi.org/10.1103/physrevb.72.024534.
dc.identifier.issn1098-0121
dc.identifier.issn1550-235X
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41417236*
dc.description.abstractWe describe the properties of a mixture of fermionic and bosonic atoms, as they are tuned across a Feshbach resonance associated with a fermionic molecular state. Provided the number of fermionic atoms exceeds the number of bosonic atoms, we argue that there is a critical detuning at which the Bose-Einstein condensate (BEC) is completely depleted. The phases on either side of this quantum phase transition can also be distinguished by the distinct Luttinger constraints on their Fermi surfaces. In both phases, the total volume enclosed by all Fermi surfaces is constrained by the total number of fermions. However, in the phase without the BEC, which has two Fermi surfaces, there is a second Luttinger constraint: the volume enclosed by one of the Fermi surfaces is constrained by the total number of bosons, so that the volumes enclosed by the two Fermi surfaces are separately conserved. The phase with the BEC may have one or two Fermi surfaces, but only their total volume is conserved. We obtain the phase diagram as a function of atomic parameters and temperature, and describe critical fluctuations in the vicinity of all transitions. We make quantitative predictions valid for the case of a narrow Feshbach resonance, but we expect the qualitative features we describe to be more generally applicable. As an aside, we point out intriguing connections between the BEC depletion transition and the transition to the fractionalized Fermi liquid in Kondo lattice models.
dc.language.isoen_US
dc.publisherAmerican Physical Society
dash.licenseLAA
dc.titleDepletion of the Bose-Einstein condensate in Bose-Fermi mixtures
dc.typeJournal Article
dc.description.versionAccepted Manuscript
dc.relation.journalPhysical Review B - Condensed Matter and Materials Physics
dash.depositing.authorSachdev, Subir::01f180804aa3dee76221c3e9d66397f5::600
dc.date.available2019-09-27T13:14:38Z
dash.workflow.comments1Science Serial ID 76389
dc.identifier.doi10.1103/PhysRevB.72.024534
dash.source.volume72;2


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