Spin fluctuations, susceptibility and the dipole oscillation of a nearly ferromagnetic Fermi gas (Articolo in rivista)

Type
Label
  • Spin fluctuations, susceptibility and the dipole oscillation of a nearly ferromagnetic Fermi gas (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.106.080402 (literal)
Alternative label
  • Recati Alessio [ 1 ,2 ] ; Stringari Sandro [ 1 ,2 ] (2011)
    Spin fluctuations, susceptibility and the dipole oscillation of a nearly ferromagnetic Fermi gas
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Recati Alessio [ 1 ,2 ] ; Stringari Sandro [ 1 ,2 ] (literal)
Pagina inizio
  • 080402 (literal)
Pagina fine
  • 080402 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 106 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] Univ Trent, Dipartimento Fis, I-38123 Povo, Italy [ 2 ] INO CNR BEC Ctr, I-38123 Povo, Italy (literal)
Titolo
  • Spin fluctuations, susceptibility and the dipole oscillation of a nearly ferromagnetic Fermi gas (literal)
Abstract
  • We discuss the spin fluctuations and the role played by the magnetic susceptibility in an atomic Fermi gas interacting with a positive scattering length. Both thermal and zero-temperature quantum fluctuations are considered. Using a sum rule approach and recent ab initio Monte Carlo results for the magnetic susceptibility of uniform matter, we provide explicit predictions for the frequency of the spin dipole oscillation of a gas trapped by a harmonic potential and discuss the deviations from the ideal gas behavior when the system approaches the ferromagnetic transition. The role of the Landau's parameters in the characterization of the magnetic properties is also discussed. (literal)
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