Expansion of a Fermi cloud in the BCS-BEC crossover (Articolo in rivista)

Type
Label
  • Expansion of a Fermi cloud in the BCS-BEC crossover (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Diana, G; Manini, N; Salasnich, L (2006)
    Expansion of a Fermi cloud in the BCS-BEC crossover
    in Physical review. A
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Diana, G; Manini, N; Salasnich, L (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 73 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Milan, Dipartimento Fis, I-20133 Milan, Italy; Univ Milan, CNR, INFM, I-20133 Milan, Italy; Univ Milan, CNISM, I-20133 Milan, Italy (literal)
Titolo
  • Expansion of a Fermi cloud in the BCS-BEC crossover (literal)
Abstract
  • We study the free expansion of a dilute two-component Fermi gas with attractive interspecies interaction in the Bardeen-Cooper-Schrieffer-Bose-Einstein condensate (BCS-BEC) crossover. We apply a time-dependent parameter-free density-functional theory by using two choices of the equation of state: an analytic formula based on Monte Carlo data and the mean-field equation of state resulting from the extended BCS equations. The calculated axial and transverse radii and the aspect ratio of the expanding cloud are compared to experimental data on vapors of Li-6 atoms. Remarkably, the mean-field theory shows a better agreement with the experiments than the theory based on the Monte Carlo equation of state. Both theories predict a measurable dependence of the aspect ratio on expansion time and on scattering length. (literal)
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