Radio frequency spectroscopy of a strongly imbalanced Feshbach-resonant Fermi gas

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dc.creatorVeillette, Martin
dc.creatorMoon, Eun Gook
dc.creatorLamacraft, Austen
dc.creatorRadzihovsky, Leo
dc.creatorSachdev, Subir
dc.creatorSheehy, D. E.
dc.date2008-03-17
dc.date2008-08-22
dc.date.accessioned2026-07-07T10:04:11Z
dc.date.available2026-07-07T10:04:11Z
dc.descriptionA sufficiently large species imbalance (polarization) in a two-component Feshbach resonant Fermi gas is known to drive the system into its normal state. We show that the resulting strongly-interacting state is a conventional Fermi liquid, that is, however, strongly renormalized by pairing fluctuations. Using a controlled 1/N expansion, we calculate the properties of this state with a particular emphasis on the atomic spectral function, the momentum distribution functions displaying the Migdal discontinuity, and the radio frequency (RF) spectrum. We discuss the latter in the light of the recent experiments of Schunck et al. (cond-mat/0702066) on such a resonant Fermi gas, and show that the observations are consistent with a conventional, but strongly renormalized Fermi-liquid picture.
dc.description10 pages, 5 figures; (v2) Numerous minor updates
dc.identifierhttps://arxiv.org/abs/0803.2517
dc.identifierhttp://arxiv.org/abs/0803.2517
dc.identifierPhysical Review A 78, 033614 (2008)
dc.identifierdoi:10.1103/PhysRevA.78.033614
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/169571
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleRadio frequency spectroscopy of a strongly imbalanced Feshbach-resonant Fermi gas
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