Tkachenko modes in a superfluid Fermi gas at unitarity (Articolo in rivista)

Type
Label
  • Tkachenko modes in a superfluid Fermi gas at unitarity (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Watanabe, G; Cozzini, M; Stringari, S (2008)
    Tkachenko modes in a superfluid Fermi gas at unitarity
    in Physical review. A
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Watanabe, G; Cozzini, M; Stringari, S (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 77 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Watanabe, Gentaro; Stringari, Sandro] Univ Trent, Dipartimento Fis, I-38050 Trento, Italy; [Watanabe, Gentaro; Stringari, Sandro] CNR, INFM, R&D Ctr Bose Einstein Condensat, I-38050 Trento, Italy; [Watanabe, Gentaro] RIKEN, Inst Chem & Phys Res, Wako, Saitama 3510198, Japan; [Cozzini, Marco] Politecn Torino, Dipartimento Fis, I-10129 Turin, Italy; [Cozzini, Marco] Inst Sci Interchange, Quantum Informat Grp, I-10133 Turin, Italy (literal)
Titolo
  • Tkachenko modes in a superfluid Fermi gas at unitarity (literal)
Abstract
  • We calculate the frequencies of the Tkachenko oscillations of a vortex lattice in a harmonically trapped superfluid Fermi gas. We use the elastohydrodynamic theory and properly account for the elastic constants, the Thomas-Fermi density profile of the atomic cloud, and the boundary conditions. Thanks to the Fermi pressure, which is responsible for larger cloud radii with respect to the case of dilute Bose-Einstein condensed gases, large vortex lattices are achievable in the unitary limit of infinite scattering length, even at relatively small angular velocities. This opens the possibility of experimentally observing vortex oscillations in the regime where the dispersion relation approaches the Tkachenko law for incompressible fluids and the mode frequency is almost comparable to the trapping frequencies. (literal)
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