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Journal of Low Temperature Physics

, Volume 162, Issue 3–4, pp 281–286 | Cite as

Particle Currents in a Fluid—Dynamical Description of Two Trapped Fermion Species

  • E. S. HernándezEmail author
  • P. Capuzzi
  • L. Szybisz
Article

Abstract

We apply a recent generalization of the fluid-dynamical scheme of nuclear physics that includes the pair density and current of superfluids, to trace the particle transition currents of an unpolarized fermion system in a harmonic trap. These current fluctuations are driven by the equilibrium density and gap and by the oscillations in the particle densities. We analize the velocity portraits of either species for the lowest multipolar excitations employing different equations of state of the unperturbed fluids, in order to establish the role of the equilibrium gap.

Keywords

Superfluid fermions Fluid-dynamics Particle currents 

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References

  1. 1.
    M. Amoruso, I. Meccoli, A. Minguzzi, M.P. Tosi, Eur. Phys. J. D 7, 441 (1999) CrossRefADSGoogle Scholar
  2. 2.
    G.M. Bruun, C.W. Clark, Phys. Rev. Lett. 83, 5415 (1999) CrossRefADSGoogle Scholar
  3. 3.
    M.A. Baranov, D.S. Petrov, Phys. Rev. A 62, 041601(R) (2000) CrossRefADSGoogle Scholar
  4. 4.
    A. Minguzzi, M.P. Tosi, Phys. Rev. A 63, 023609 (2001) CrossRefADSGoogle Scholar
  5. 5.
    P. Capuzzi, E.S. Hernández, L. Szybisz, Phys. Rev. A 78, 043619 (2008) CrossRefADSGoogle Scholar
  6. 6.
    P. Capuzzi, E.S. Hernández, L. Szybisz, Eur. Phys. J. D60, 347 (2010) ADSGoogle Scholar
  7. 7.
    E.S. Hernández, P. Capuzzi, L. Szybisz, J. Low Temp. Phys. (2010). doi: 10.1007/s10909-010-0230-3 Google Scholar
  8. 8.
    M. Grasso, M. Urban, Phys. Rev. A 68, 033610 (2003) CrossRefADSGoogle Scholar
  9. 9.
    T. Papenbrock, G.F. Bertsch, Phys. Rev. C 59, 2052 (1999) CrossRefADSGoogle Scholar
  10. 10.
    H. Heiselberg, Phys. Rev. A 63, 043606 (2001) CrossRefADSGoogle Scholar
  11. 11.
    R. Combescot, X. Leyronas, Phys. Rev. Lett. 89, 190405 (2002) CrossRefADSGoogle Scholar
  12. 12.
    W. Kohn, Phys. Rev. 123, 1242 (1961) zbMATHCrossRefADSGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Departamento de Física, Facultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresBuenos AiresArgentina
  2. 2.Consejo Nacional de Investigaciones Científicas y TécnicasBuenos AiresArgentina
  3. 3.Comisión Nacional de Energía AtómicaBuenos AiresArgentina

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