ON THE VORTEX STRUCTURE IN TWO COMPONENT BOSE-EINSTEIN CONDENSATE

  • A. P. Ivashin National Sciense Centre “Kharkov institute of physics and technology”
  • Yurii M. Poluektov National Sciense Centre “Kharkov institute of physics and technology” https://orcid.org/0000-0002-3207-3226

Abstract

The vortex structure in a space-homogeneous Bose-Einstein condensate of two particle species with different masses has been studied. It is shown that the vortex structure in the two-component condensate is described by three dimensionless parameters, which define the system. That is different from the usual one-component condensate, where the vortex is described by a parameter-less dimensionless equation with a fixed structure. A few types of vortices with different qualitative structure are explored. In particular, it is shown, that the vortex structure strongly depends on the sign of “interaction” constant of the components. There can exist the super-density vortices, when the “interaction” constant is positive. These vortices have the near-axis density greater than the equilibrium density of a homogeneous space Bose-Einstein condensate. We show that there can exist the vortices with opposite direction of the condensate rotation near the axis and far off the axis.

Downloads

Download data is not yet available.

Author Biography

Yurii M. Poluektov, National Sciense Centre “Kharkov institute of physics and technology”

References

Pitaevskii L.P. Vikhrevye linii v neideal'nom Boze-gaze // ZhETF. – 1961. –T. 40. – S. 646-651.

Gross E.P. Structure of a quantized vortex in boson system // Nuovo Cimento. –1961. – Vol. 20. – P. 454-457.

Lifshits E.M., Pitaevskii L.P. Statisticheskaya fizika. Chast' 2. – M.: Nauka, 1978. – 447 s.

Ivashin A.P., Poluektov Y.M. Nonlocal effect influence on the vortex filament structure in bose-gas // Problems of atomic science and technology,Series: Nuclear Physic Investigations (57). – 2012. – No.1. –– P. 265-267.

Pitaevskii L.P. Kondensatsiya Boze-Einshteina v magnitnykh lovushkakh. Vvedenie v teoriyu // UFN. – 1998. – Tom. 168. – S. 641-653; Kondensaty Boze-Einshteina v pole lazernogo izlucheniya // UFN. – 2006. – Tom. 176. – S.345-364.

Kadomtsev B.B., Kadomtsev M.B. Kondensaty Boze-Einshteina // UFN. – 1997. – Tom.167. – S. 649-664.

Pethick C.J., Smith H. Bose-Einstein Condensation in Dilute Gases, 2nd edn. – Cambridge: Cambridge University Press, 2008. – P. 569.

Pitaevskii L.P., Stringari S. Bose-Einstein Condensation. – Oxford: Oxford University Press, 2003. – P. 385.

Leanhardt A.E., Gorlitz A., Chikkatur A.P., Kielpinski D., Shin Y., Pritchard D.E., W. Ketterle W. Imprinting vortices in a Bose –Einstein condensate using topological phases // Phys. Rev. Lett. – 2002. – Vol.89. – P. 190403 (1-4).

Shin Y., Saba M., Vengalattore M., Pasquini T.A., Sanner C., Leanhardt A.E., Prentiss M., Pritchard D.E. and Ketterle W. Dynamical instability of a doubly quantized vortex in a Bose-Einstein condensate // Phys. Rev. Lett. – 2004. – Vol.93. – P. 160406 (1-4).

Myat C.J., Burt E.A., Ghrist R.W., Cornell E.A., Wieman C.E. Production of two overlapping Bose-Einstein condensates by sympathetic cooling // Phys. Rev. Lett. –1997. – Vol.78. – P. 586-589.

Stamper-Kurn D.M., Andrews M.R., Chikkatur A.P., Inouye S., Miesner H.-J., Stenger J., Ketterle W. Optical confinement of a Bose-Einstein condensate // Phys. Rev. Lett. – 1998. – Vol.80. – P. 2027-2030.

Matthews M.R., Anderson B.P., Hajan P.C., Hall D.C., Wieman C.E., Cornell E.A. Vortices in Bose-Einstein condensate // Phys. Rev. Lett. – 1999. – Vol.83. – P. 2498-2501.

Ho T.L., Shenoy V.B. Binary mixtures of Bose condensates of alkali atoms // Phys. Rev. Lett. – 1996. – Vol.77. – P. 3276- 3279.

Ho T.L. Spinor Bose condensates in optical traps // Phys. Rev. Lett. – 1998. – Vol.81. – P. 742-745.

Garcia-Ripoll J.J., Perez-Garcia V.M. Two-mode theory of vortex stability in multicomponent Bose-Einstein condensates // Phys. Rev. A. – 2000. – Vol.62. – P.033601 (1-8).

Fetter A.L., Svidzinsky A.A. Vortices in a trapped dilute Bose-Einstein condensate // J. Phys. Condens. Matter. – 2001. – Vol.13. – R135-R194.

Kasamatsu K., Tsubota M., Ueda M. Vortices in multicomponent Bose-Einstein condensates // Int. J. Mod. Phys. B. – 2005. – Vol.19. – P. 1835-1904.

Ishino S., Tsubota M., Takeuchi H. Instability of overlapped vortices rotating in opposite directions in binary Bose-Einstein condensates // J. Low Temp. Phys. B. – 2013. – Vol.171. – P. 429-435.

Published
2014-09-04
Cited
How to Cite
Ivashin, A. P., & Poluektov, Y. M. (2014). ON THE VORTEX STRUCTURE IN TWO COMPONENT BOSE-EINSTEIN CONDENSATE. East European Journal of Physics, 1(3), 104-111. https://doi.org/10.26565/2312-4334-2014-3-12