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Journal of Low Temperature Physics

, Volume 179, Issue 3–4, pp 142–157 | Cite as

Stationary Vortices and Pair Currents in a Trapped Fermion Superfluid

  • P. CapuzziEmail author
  • E. S. Hernández
  • L. Szybisz
Article
  • 79 Downloads

Abstract

We examine the effects of stationary vortices in superfluid \(^6\)Li atoms at zero temperature in the frame of the recently developed fluiddynamical scheme, that includes the pair density and its associated pair current and pair kinetic energy in addition to the fields appearing in the hydrodynamical description of normal fluids. In this frame, the presence of any particle velocity field gives rise to the appearance of a pair current. As an illustration, we consider a stationary vortex with cylindrical geometry in an unpolarized fluid, and examine the effects of the rotational velocity field on the spatial structure of the equilibrium gap and the profiles of the pair current. We show that the latter is intrinsically complex and its imaginary part is the source of a radial drift for the velocity field. We discuss the consequences on the stationary regime.

Keywords

Trapped superfluid Vortex BCS–BEC 

Notes

Acknowledgments

This work was performed under grants PIP 0546 from CONICET, Argentina, PICT 2008-0682 from ANPCYT, Argentina and UBACYT 01/K156 from University of Buenos Aires.

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

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

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