Polarized superfluidity in the attractive Hubbard model with population imbalance

Simple item page
dc.creatorDao, Tung-Lam
dc.creatorFerrero, Michel
dc.creatorGeorges, Antoine
dc.creatorCapone, Massimo
dc.creatorParcollet, Olivier
dc.date2008-07-18
dc.date2008-11-16
dc.date.accessioned2026-07-07T12:09:41Z
dc.date.available2026-07-07T12:09:41Z
dc.descriptionWe study a two-component Fermi system with attractive interactions and different populations of the two species in a cubic lattice. For an intermediate coupling we find a uniformly polarized superfluid which is stable down to very low temperatures. The momentum distribution of this phase closely resembles that of the Sarma phase, characterized by two Fermi surfaces. This phase is shown to be stabilized by a potential energy gain, as in a BCS superfluid, in contrast to the unpolarized BEC which is stabilized by kinetic energy. We present general arguments suggesting that preformed pairs in the unpolarized superfluid favor the stabilization of a polarized superfluid phase.
dc.description4+ pages, 4 figures, new version
dc.identifierhttps://arxiv.org/abs/0807.2923
dc.identifierhttp://arxiv.org/abs/0807.2923
dc.identifierPhys. Rev. Lett. 101, 236405 (2008)
dc.identifierdoi:10.1103/PhysRevLett.101.236405
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/209705
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titlePolarized superfluidity in the attractive Hubbard model with population imbalance
dc.typetext

Files

Collections

arXiv