Metastable superfluidity of repulsive fermionic atoms in optical lattices

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dc.creatorRosch, Achim
dc.creatorRasch, David
dc.creatorBinz, Benedikt
dc.creatorVojta, Matthias
dc.date2008-09-03
dc.date2008-12-29
dc.date.accessioned2026-07-07T12:22:14Z
dc.date.available2026-07-07T12:22:14Z
dc.descriptionIn the fermionic Hubbard model, doubly occupied states have an exponentially large lifetime for strong repulsive interactions U. We show that this property can be used to prepare a metastable s-wave superfluid state for fermionic atoms in optical lattices described by a large-U Hubbard model. When an initial band-insulating state is expanded, the doubly occupied sites Bose condense. A mapping to the ferromagnetic Heisenberg model in an external field allows for a reliable solution of the problem. Nearest-neighbor repulsion and pair hopping are important in stabilizing superfluidity.
dc.description4 pages, 3 figs; (v2) final version as published
dc.identifierhttps://arxiv.org/abs/0809.0505
dc.identifierhttp://arxiv.org/abs/0809.0505
dc.identifierPhys. Rev. Lett. 101, 265301 (2008)
dc.identifierdoi:10.1103/PhysRevLett.101.265301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/213581
dc.subjectOther Condensed Matter
dc.subjectSuperconductivity
dc.titleMetastable superfluidity of repulsive fermionic atoms in optical lattices
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