BCS-BEC Crossover in Atomic Fermi Gases with a Narrow Resonance

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dc.creatorJensen, L. M.
dc.creatorNilsen, H. M.
dc.creatorWatanabe, Gentaro
dc.date2006-04-05
dc.date.accessioned2026-07-07T11:42:53Z
dc.date.available2026-07-07T11:42:53Z
dc.descriptionWe determine the effects on the BCS-BEC crossover of the energy dependence of the effective two-body interaction, which at low energies is determined by the effective range. To describe interactions with an effective range of either sign, we consider a single-channel model with a two-body interaction having an attractive square well and a repulsive square barrier. We investigate the two-body scattering properties of the model, and then solve the Eagles-Leggett equations for the zero temperature crossover, determining the momentum dependent gap and the chemical potential self-consistently. From this we investigate the dependence of the crossover on the effective range of the interaction.
dc.description12 pages, 14 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0604149
dc.identifierhttp://arxiv.org/abs/cond-mat/0604149
dc.identifierPhys.Rev.A74:043608,2005
dc.identifierdoi:10.1103/PhysRevA.74.043608
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201043
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.subjectNuclear Theory
dc.titleBCS-BEC Crossover in Atomic Fermi Gases with a Narrow Resonance
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