Broad versus narrow Fano-Feshbach resonances in the BCS-BEC crossover with trapped Fermi atom

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dc.creatorSimonucci, S.
dc.creatorPieri, P.
dc.creatorStrinati, G. C.
dc.date2004-07-22
dc.date2005-01-20
dc.date.accessioned2026-07-07T02:59:21Z
dc.date.available2026-07-07T02:59:21Z
dc.descriptionWith reference to the broad and narrow Fano-Feshbach resonances of 6Li at about 822 G and 543 G, we show that for the broad resonance a molecular coupled-channel calculation can be mapped with excellent accuracy onto an effective single-channel problem with a contact interaction. This occurs for a wide enough range of the magnetic field, that the full BCS-BEC crossover can be realized with a typical trap. For the narrow resonance, the mapping onto a single-channel problem and the realization of the BCS-BEC crossover are restricted to too narrow a range of the magnetic field to obtain them in practice. In this way, the BCS-BEC crossover for Fermi atoms with the broad resonance is placed on the same footing as the corresponding crossover for different physical systems.
dc.descriptionRevised version to appear in Europhysics Letters
dc.identifierhttps://arxiv.org/abs/cond-mat/0407600
dc.identifierhttp://arxiv.org/abs/cond-mat/0407600
dc.identifierEurophysics Letters 69, pp. 713-718 (2005)
dc.identifierdoi:10.1209/epl/i2004-10412-2
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/24479
dc.subjectSuperconductivity
dc.subjectOther Condensed Matter
dc.titleBroad versus narrow Fano-Feshbach resonances in the BCS-BEC crossover with trapped Fermi atom
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