Bound State of Ultracold Fermions in the Spin Imbalanced Normal State

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dc.creatorFumarola, F.
dc.creatorAleiner, I. L.
dc.creatorAltshuler, B. L.
dc.date2007-02-28
dc.date2007-03-02
dc.date.accessioned2026-07-07T07:49:29Z
dc.date.available2026-07-07T07:49:29Z
dc.descriptionWe study a polarized Fermi gas and demonstrate that Fano-Feshbach (FF) resonances lead to the pairing of fermions and holes into long living massive bosonic modes (bifermions and biholes), which can be viewed as signatures of a first order quantum phase transition. These modes, which are neither conventional Cooper pairs nor closed channel bosonic dimers, have a peculiar dispersion relation and appear already in the weak coupling limit, i.e. for large FF detunings. Our result is in accord with claims of Schunck \emph{et al.} [cond-mat/0702066] that by stabilizing the normal state the population imbalance still allows effect of s-wave fermionic pairing.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0703003
dc.identifierhttp://arxiv.org/abs/cond-mat/0703003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/124865
dc.subjectSuperconductivity
dc.subjectStatistical Mechanics
dc.subjectAtomic Physics
dc.titleBound State of Ultracold Fermions in the Spin Imbalanced Normal State
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