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Abad, M.; Guilleumas, M.; Mayol, R.; Pi, M.; Jezek, D.M. "Dipolar condensates confined in a toroidal trap: Ground state and vortices" (2010) Physical Review A - Atomic, Molecular, and Optical Physics. 81(4)
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Abstract:

We study a Bose-Einstein condensate of Cr52 atoms confined in a toroidal trap with a variable strength of s-wave contact interactions. We analyze the effects of the anisotropic nature of the dipolar interaction by considering the magnetization axis to be perpendicular to the trap symmetry axis. In the absence of a central repulsive barrier, when the trap is purely harmonic, the effect of reducing the scattering length is a tuning of the geometry of the system from a pancake-shaped condensate when it is large to a cigar-shaped condensate for small scattering lengths. For a condensate in a toroidal trap, the interaction in combination with the central repulsive Gaussian barrier produces an azimuthal dependence of the particle density for a fixed radial distance. We find that along the magnetization direction the density decreases as the scattering length is reduced but presents two symmetric density peaks in the perpendicular axis. For even lower values of the scattering length we observe that the system undergoes a dipolar-induced symmetry breaking phenomenon. The whole density becomes concentrated in one of the peaks, resembling an origin-displaced cigar-shaped condensate. In this context we also analyze stationary vortex states and their associated velocity fields, finding that these also show a strong azimuthal dependence for small scattering lengths. The expectation value of the angular momentum along the z direction provides a qualitative measure of the difference between the velocity in the different density peaks. © 2010 The American Physical Society.

Registro:

Documento: Artículo
Título:Dipolar condensates confined in a toroidal trap: Ground state and vortices
Autor:Abad, M.; Guilleumas, M.; Mayol, R.; Pi, M.; Jezek, D.M.
Filiación:Departament d'Estructura i Constituents de la Matèria, Facultat de Física, Universitat de Barcelona, E-08028 Barcelona, Spain
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, Argentina
Palabras clave:Azimuthal dependence; Bose-Einstein condensates; Contact interaction; Dipolar interaction; Expectation values; Gaussians; Magnetization axis; Magnetization direction; Pancake-shaped condensate; Particle densities; Radial distance; Scattering length; Stationary vortex; Symmetry-breaking; Toroidal trap; Trap symmetries; Velocity field; Z-directions; Statistical mechanics; Steam condensers; Vortex flow; Scattering
Año:2010
Volumen:81
Número:4
DOI: http://dx.doi.org/10.1103/PhysRevA.81.043619
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_v81_n4_p_Abad

Referencias:

  • Werner, J., Griesmaier, A., Hensler, S., Stuhler, J., Pfau, T., Simoni, A., Tiesinga, E., (2005) Phys. Rev. Lett., 94, p. 183201. , PRLTAO 0031-9007 10.1103/PhysRevLett.94.183201
  • Lahaye, T., Menotti, C., Santos, L., Lewenstein, M., Pfau, T., (2009) Rep. Prog. Phys., 72, p. 126401. , RPPHAG 0034-4885 10.1088/0034-4885/72/12/126401
  • Stuhler, J., Griesmaier, A., Koch, T., Fattori, M., Pfau, T., Giovanazzi, S., Pedri, P., Santos, L., (2005) Phys. Rev. Lett., 95, p. 150406. , PRLTAO 0031-9007 10.1103/PhysRevLett.95.150406
  • Giovanazzi, S., Pedri, P., Santos, L., Griesmaier, A., Fattori, M., Koch, T., Stuhler, J., Pfau, T., (2006) Phys. Rev. A, 74, p. 013621. , PLRAAN 1050-2947 10.1103/PhysRevA.74.013621
  • Santos, L., Shlyapnikov, G.V., Zoller, P., Lewenstein, M., (2000) Phys. Rev. Lett., 85, p. 1791. , PRLTAO 0031-9007 10.1103/PhysRevLett.85.1791
  • Koch, T., Lahaye, T., Metz, J., Fröhlich, B., Griesmaier, A., Pfau, T., (2008) Nat. Phys., 4, p. 218. , PRLTAO 1745-2473 10.1038/nphys887
  • Eberlein, C., Giovanazzi, S., O'Dell, D.H.J., (2005) Phys. Rev. A, 71, p. 033618. , PLRAAN 1050-2947 10.1103/PhysRevA.71.033618
  • Góral, K., Santos, L., (2002) Phys. Rev. A, 66, p. 023613. , PLRAAN 1050-2947 10.1103/PhysRevA.66.023613
  • Yi, S., You, L., (2002) Phys. Rev. A, 66, p. 013607. , PLRAAN 1050-2947 10.1103/PhysRevA.66.013607
  • O'Dell, D.H.J., Giovanazzi, S., Eberlein, C., (2004) Phys. Rev. Lett., 92, p. 250401. , PRLTAO 0031-9007 10.1103/PhysRevLett.92.250401
  • Ronen, S., Bortolotti, D.C.E., Bohn, J.L., (2006) Phys. Rev. A, 74, p. 013623. , PLRAAN 1050-2947 10.1103/PhysRevA.74.013623
  • Santos, L., Shlyapnikov, G.V., Lewenstein, M., (2003) Phys. Rev. Lett., 90, p. 250403. , PRLTAO 0031-9007 10.1103/PhysRevLett.90.250403
  • Ronen, S., Bortolotti, D.C.E., Bohn, J.L., (2007) Phys. Rev. Lett., 98, p. 030406. , PRLTAO 0031-9007 10.1103/PhysRevLett.98.030406
  • Wilson, R.W., Ronen, S., Bohn, J.L., Pu, H., (2008) Phys. Rev. Lett., 100, p. 245302. , PRLTAO 0031-9007 10.1103/PhysRevLett.100.245302
  • Wilson, R.M., Ronen, S., Bohn, J.L., (2009) Phys. Rev. A, 80, p. 023614. , PLRAAN 1050-2947 10.1103/PhysRevA.80.023614
  • Ticknor, C., Parker, N.G., Melatos, A., Cornish, S.L., O'Dell, D.H.J., Martin, A.M., (2008) Phys. Rev. A, 78, p. 061607. , PLRAAN 1050-2947 10.1103/PhysRevA.78.061607
  • Parker, N.G., Ticknor, C., Martin, A.M., O'Dell, D.H.J., (2009) Phys. Rev. A, 79, p. 013617. , PLRAAN 1050-2947 10.1103/PhysRevA.79.013617
  • Lahaye, T., Metz, J., Fröhlich, B., Koch, T., Meister, M., Griesmaier, A., Pfau, T., Ueda, M., (2008) Phys. Rev. Lett., 101, p. 080401. , PRLTAO 0031-9007 10.1103/PhysRevLett.101.080401
  • Metz, J., Lahaye, T., Fröhlich, B., Griesmaier, A., Pfau, T., Saito, H., Kawaguchi, Y., Ueda, M., (2009) New J. Phys., 11, p. 055032. , NJOPFM 1367-2630 10.1088/1367-2630/11/5/055032
  • Griesmaier, A., Werner, J., Hensler, S., Stuhler, J., Pfau, T., (2005) Phys. Rev. Lett., 94, p. 160401. , PRLTAO 0031-9007 10.1103/PhysRevLett.94.160401
  • Beaufils, Q., Chicireanu, R., Zanon, T., Laburthe-Tolra, B., Maréchal, E., Vernac, L., Keller, J.-C., Gorceix, O., (2008) Phys. Rev. A, 77, p. 061601. , PLRAAN 1050-2947 10.1103/PhysRevA.77.061601
  • Xiong, B., Gong, J., Pu, H., Bao, W., Li, B., (2009) Phys. Rev. A, 79, p. 013626. , PLRAAN 1050-2947 10.1103/PhysRevA.79.013626
  • Asad-Uz-Zaman, M., Blume, D., (2009) Phys. Rev. A, 80, p. 053622. , PLRAAN 1050-2947 10.1103/PhysRevA.80.053622
  • Ryu, C., Andersen, M.F., Cladé, P., Natarajan, V., Helmerson, K., Phillips, W.D., (2007) Phys. Rev. Lett., 99, p. 260401. , PRLTAO 0031-9007 10.1103/PhysRevLett.99.260401
  • Mayteevarunyoo, T., Malomed, B.A., Dong, G., (2008) Phys. Rev. A, 78, p. 053601. , PLRAAN 1050-2947 10.1103/PhysRevA.78.053601
  • Olson, S.E., Terraciano, M.L., Bashkansky, M., Fatemi, F.K., (2007) Phys. Rev. A, 76, p. 061404. , PLRAAN 1050-2947 10.1103/PhysRevA.76.061404
  • Donnelly, R.J., (1991) Quantized Vortices in Helium II, , Cambridge University Press, Cambridge, UK
  • Fetter, A.L., (2009) Rev. Mod. Phys., 81, p. 647. , RMPHAT 0034-6861 10.1103/RevModPhys.81.647
  • Weiler, C.N., Neely, T.W., Scherer, D.R., Bradley, A.S., Davis, M.J., Anderson, B.P., (2008) Nature (London), 455, p. 948. , NATUAS 0028-0836 10.1038/nature07334
  • Capuzzi, P., Jezek, D.M., (2009) J. Phys. B, 42, p. 145301. , JPAPEH 0953-4075 10.1088/0953-4075/42/14/145301
  • Cataldo, H.M., Jezek, D.M., (2009) Eur. Phys. J. D, 54, p. 585. , EPJDF6 1434-6060 10.1140/epjd/e2009-00196-3
  • Mason, P., Berloff, N.G., (2009) Phys. Rev. A, 79, p. 043620. , PLRAAN 1050-2947 10.1103/PhysRevA.79.043620
  • Piazza, F., Collins, L.A., Smerzi, A., (2009) Phys. Rev. A, 80, p. 021601. , PLRAAN 1050-2947 10.1103/PhysRevA.80.021601
  • Yi, S., Pu, H., (2006) Phys. Rev. A, 73, p. 061602. , PLRAAN 1050-2947 10.1103/PhysRevA.73.061602
  • O'Dell, D.H.J., Eberlein, C., (2007) Phys. Rev. A, 75, p. 013604. , PLRAAN 1050-2947 10.1103/PhysRevA.75.013604
  • Klawunn, M., Nath, R., Pedri, P., Santos, L., (2008) Phys. Rev. Lett., 100, p. 240403. , PRLTAO 0031-9007 10.1103/PhysRevLett.100.240403
  • Klawunn, M., Santos, L., (2009) New J. Phys., 11, p. 055012. , NJOPFM 1367-2630 10.1088/1367-2630/11/5/055012
  • Wilson, R.M., Ronen, S., Bohn, J.L., (2009) Phys. Rev. A, 79, p. 013621. , PLRAAN 1050-2947 10.1103/PhysRevA.79.013621
  • Abad, M., Guilleumas, M., Mayol, R., Pi, M., Jezek, D.M., (2009) Phys. Rev. A, 79, p. 063622. , PLRAAN 1050-2947 10.1103/PhysRevA.79.063622
  • Jezek, D.M., Capuzzi, P., Cataldo, H.M., (2008) J. Phys. B, 41, p. 045304. , JPAPEH 0953-4075 10.1088/0953-4075/41/4/045304
  • Jezek, D.M., Capuzzi, P., Guilleumas, M., Mayol, R., (2008) Phys. Rev. A, 78, p. 053616. , PLRAAN 1050-2947 10.1103/PhysRevA.78.053616

Citas:

---------- APA ----------
Abad, M., Guilleumas, M., Mayol, R., Pi, M. & Jezek, D.M. (2010) . Dipolar condensates confined in a toroidal trap: Ground state and vortices. Physical Review A - Atomic, Molecular, and Optical Physics, 81(4).
http://dx.doi.org/10.1103/PhysRevA.81.043619
---------- CHICAGO ----------
Abad, M., Guilleumas, M., Mayol, R., Pi, M., Jezek, D.M. "Dipolar condensates confined in a toroidal trap: Ground state and vortices" . Physical Review A - Atomic, Molecular, and Optical Physics 81, no. 4 (2010).
http://dx.doi.org/10.1103/PhysRevA.81.043619
---------- MLA ----------
Abad, M., Guilleumas, M., Mayol, R., Pi, M., Jezek, D.M. "Dipolar condensates confined in a toroidal trap: Ground state and vortices" . Physical Review A - Atomic, Molecular, and Optical Physics, vol. 81, no. 4, 2010.
http://dx.doi.org/10.1103/PhysRevA.81.043619
---------- VANCOUVER ----------
Abad, M., Guilleumas, M., Mayol, R., Pi, M., Jezek, D.M. Dipolar condensates confined in a toroidal trap: Ground state and vortices. Phys Rev A. 2010;81(4).
http://dx.doi.org/10.1103/PhysRevA.81.043619