Navegar

Colección

Datos Estadísticas

Artículo

La versión final de este artículo es de uso interno. El editor solo permite incluir en el repositorio el artículo en su versión post-print. Por favor, si usted la posee enviela a
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

We present a numerical calculation of the velocity field of an off-axis vortex within a harmonic trapping potential. We consider a condensate with a large number of particles which, in spite of being in the Thomas-Fermi regime, possesses a non-totally-negligible vortex core size. Via a simple, yet realistic, modeling of the vortex-state density, we derive, by treating the equation of continuity outside and inside the vortex core, respective equations for the velocity field and the vortex precession velocity. We find that the vortex precession velocity is given by two contributions: the background velocity field evaluated around the border of the core and another term which depends on the core shape. Our findings concerning the velocity field outside the vortex core are in good agreement with previous theoretical predictions in a narrow region around it, while far away from the vortex we observe a field with a large asymmetry with respect to the vortex position. We show that a better approximation may be obtained by adding the velocity field produced by an antivortex located outside the condensate. © 2008 The American Physical Society.

Registro:

Documento: Artículo
Título:Vortex velocity field in inhomogeneous media: A numerical study in Bose-Einstein condensates
Autor:Jezek, D.M.; Cataldo, H.M.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, RA-1428 Buenos Aires, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
Palabras clave:Bose-Einstein condensation; Fermi level; Molecular physics; Optical systems; Vortex flow; Harmonic trapping; Thomas-Fermi regime; Vortex core size; Vortex velocity fields; Flow velocity
Año:2008
Volumen:77
Número:4
DOI: http://dx.doi.org/10.1103/PhysRevA.77.043602
Título revista:Physical Review A - Atomic, Molecular, and Optical Physics
Título revista abreviado:Phys Rev A
ISSN:10502947
CODEN:PLRAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v77_n4_p_Jezek

Referencias:

  • Donnelly, R.J., (1991) Quantized Vortices in Helium II, , Cambridge University Press, Cambridge, England
  • Sheehy, D.E., Radzihovsky, L., (2004) Phys. Rev. A, 70, p. 063620. , PLRAAN 1050-2947 10.1103/PhysRevA.70.063620
  • Dalfovo, F., Stringari, S., (1996) Phys. Rev. A, 53, p. 2477. , PLRAAN 1050-2947 10.1103/PhysRevA.53.2477
  • Fetter, A.L., Svidzinsky, A.A., (2001) J. Phys.: Condens. Matter, 13, p. 135. , JCOMEL 0953-8984 10.1088/0953-8984/13/12/201
  • Anderson, B.P., Haljan, P.C., Wieman, C.E., Cornell, E.A., (2000) Phys. Rev. Lett., 85, p. 2857. , PRLTAO 0031-9007 10.1103/PhysRevLett.85.2857
  • Lundh, E., Ao, P., (2000) Phys. Rev. A, 61, p. 063612. , PLRAAN 1050-2947 10.1103/PhysRevA.61.063612
  • McGee, S.A., Holland, M.J., (2001) Phys. Rev. A, 63, p. 043608. , PLRAAN 1050-2947 10.1103/PhysRevA.63.043608
  • Fetter, A.L., (2004) Phys. Rev. A, 69, p. 043617. , PLRAAN 1050-2947 10.1103/PhysRevA.69.043617
  • Mason, P., Berloff, N.G., Fetter, A.L., (2006) Phys. Rev. A, 74, p. 043611. , PLRAAN 1050-2947 10.1103/PhysRevA.74.043611
  • Möttönen, M., Virtanen, S.M.M., Isoshima, T., Salomaa, M.M., (2005) Phys. Rev. A, 71, p. 033626. , PLRAAN 1050-2947 10.1103/PhysRevA.71.033626
  • Pietilä, V., Möttönen, M., Isoshima, T., Huhtamäki, J.A.M., Virtanen, S.M.M., (2006) Phys. Rev. A, 74, p. 023603. , PLRAAN 1050-2947 10.1103/PhysRevA.74.023603
  • Crasovan, L.C., Pérez-García, V.M., Danaila, I., Mihalache, D., Torner, L., (2004) Phys. Rev. A, 70, p. 033605. , PLRAAN 1050-2947 10.1103/PhysRevA.70.033605
  • Nilsen, H.M., Baym, G., Pethick, C.J., (2006) Proc. Natl. Acad. Sci. U.S.A., 103, p. 7978. , PNASA6 0027-8424 10.1073/pnas.0602541103
  • Gross, E.P., (1961) Nuovo Cimento, 20, p. 454. , NUCIAD 0029-6341 10.1007/BF02731494
  • Pitaevskii, L.P., (1961) Zh. Eksp. Teor. Fiz., 40, p. 646
  • Pitaevskii, L.P., (1961) Sov. Phys. JETP, 13, p. 451. , [
  • Castin, Y., Dum, R., (1999) Eur. Phys. J. D, 7, p. 399. , EPJDF6 1434-6060 10.1007/s100530050584
  • Guilleumas, M., Graham, R., (2001) Phys. Rev. A, 64, p. 033607. , PLRAAN 1050-2947 10.1103/PhysRevA.64.033607

Citas:

---------- APA ----------
Jezek, D.M. & Cataldo, H.M. (2008) . Vortex velocity field in inhomogeneous media: A numerical study in Bose-Einstein condensates. Physical Review A - Atomic, Molecular, and Optical Physics, 77(4).
http://dx.doi.org/10.1103/PhysRevA.77.043602
---------- CHICAGO ----------
Jezek, D.M., Cataldo, H.M. "Vortex velocity field in inhomogeneous media: A numerical study in Bose-Einstein condensates" . Physical Review A - Atomic, Molecular, and Optical Physics 77, no. 4 (2008).
http://dx.doi.org/10.1103/PhysRevA.77.043602
---------- MLA ----------
Jezek, D.M., Cataldo, H.M. "Vortex velocity field in inhomogeneous media: A numerical study in Bose-Einstein condensates" . Physical Review A - Atomic, Molecular, and Optical Physics, vol. 77, no. 4, 2008.
http://dx.doi.org/10.1103/PhysRevA.77.043602
---------- VANCOUVER ----------
Jezek, D.M., Cataldo, H.M. Vortex velocity field in inhomogeneous media: A numerical study in Bose-Einstein condensates. Phys Rev A. 2008;77(4).
http://dx.doi.org/10.1103/PhysRevA.77.043602