Vol. 7 (11) pp. 646-651 DOI: 10.21474/IJAR01/10053

VORTEX EXCITATIONS UNDER COLLISION BETWEEN A SUPERFLOWING RING - SHAPED BEC AND A CENTERED STATIC BEC

  • Department of information engineering, nanjing normal university taizhou college, taizhou 225300, china
10 Downloads 54 Views
Crossref

Download Full Paper (PDF)

Abstract

By performing numerical calculations of the quasi-two-dimensional GP equation, the dynamical generation and evolution of vortex excitations under collision between a superflowing ring-shaped BEC and a centered static BEC are investigated. We study the collision between a superflowing ring-shaped BEC and a static centered BEC. Symmetrically positioned singly quantized vortices can be created and their time evolution mainly depends on the atomic interactions.

Keywords

Article Analytics

References

  1. Matthews, M, R., Anderson, B. P., Haljan, P. C., Hall, D. S., Wieman, C. E., & Cornell, E. A. Vortices in a Bose-Einstein condensate. Phys. Rev. Lett. 83,? 2498 (1999).
  2. Madison, K. W., Chevy, F., Wohlleben, W., & Dalibard, J. Vortex formation in a Stirred Bose-Einstein condensate. Rev. Lett. 84, 806 (2000).
  3. Raman, C., Abo-Shaeer, J. R., Vogels, J. M., Xu, K., & Ketterle W. Vortex nucleation in a stirred Bose-Einstein condensate. Phys. Rev. Lett. .87, 210402 (2001).
  4. Madison, K. W., Chevy, F., Bretin, V., & Dalibard, J. Stationary States of a Rotating Bose-Einstein condensate: Routes to Vortex Nucleation. Phys. Rev. Lett. 86, 4443 (2001).
  5. Abo-Shaeer, J. R., Raman, C., Vogels, J. M. ,& Ketterle, W. Observation of vortex lattices in Bose-Einstein condensates. Science . 292, 476 (2001).
  6. Leanhardt, A. E., Gorlitz, A., Chikkatur, A. P., Kielpinski, D., Shin, Y., Pritchard, D. E., & Ketterle W. Imprinting vortices in a Bose-Einstein Condensate using topological phases. Phys. Rev. Lett. 89, 190403(2002)
  7. Williams, J. E., & Holland, M. J. Preparing topological states of a Bose-Einstein condensate. Nature, 401, 568 (1999).
  8. Cooper, N. R., Wilkin, N. K. , & Gunn, J. M. F. Quantum phases of vortices in rotating Bose-Einstein condensates. Phys. Rev. Lett. 87, 120405 (2001).
  9. Fetter, A. L. Rotating trapped Bose-Einstein condensates.? Rev. Lett. 81, 647 (2009).
  10. Sinha, S., & Castin, Y. Dynamic instability of a rotating Bose-Einstein condensate. Rev. Lett. 87, 190402 (2001).
  11. Jackson, B., McCann, J. F., & Adams, C. S. b. Dissipation and vortex creation in Bose-Einstein condensed gases. Phys. Rev.A. 61, 051603 (2000).
  12. Wright, T. M., Bradley, A. S. ,& Ballagh, R. J. Finite-temperature dynamics of a single vortex in a Bose-Einstein condensate: equilibrium precession and rotational symmetry breaking. Phys. Rev. A. 80,053624 (2009).
  13. Yang, T., Xiong, B., & Benedict, K. A. Dynamical excitations in the collision of two-dimensional Bose-Einstein condensates. Phys. Rev. A. 87, 023603 (2013).
  14. Yang, G., Zhang S., & Jin J. Collision of parallel vortex dipoles in a Bose-Einstein condensate. J. Phys. B. 52, 065201 (2019)
  15. Mawson, T., Petersen, T. C., & Simula, T. Collision dynamics of two-dimensional non-Abelian vortices. Phys. Rev. A. 96, 033623 (2017).
  16. Choi, S., Morgan, S. A. ,& Burnett, K. Phenomenological damping in trapped atomic Bose-Einstein condensates. Rev. A. ?57, 4057 (1998).
  17. Wright, K. C., Blakestad, R. B, Lobb, C. J., Phillips, W.D. ,& Campbell, G. K. Threshold for creating excitations in a stirred superfluid ring. Phys. Rev. A. 88, 063633 (2013).

How to Cite This Article

Qingli Zhu (2019); VORTEX EXCITATIONS UNDER COLLISION BETWEEN A SUPERFLOWING RING - SHAPED BEC AND A CENTERED STATIC BEC, Int. J. of Adv. Res., 7 (11), 646-651, ISSN 2320-5407. DOI: https://doi.org/10.21474/IJAR01/10053

Corresponding Author

Qingli Zhu
Department of information engineering, nanjing normal university taizhou college
Creative Commons Attribution 4.0 This work is licensed under a Creative Commons Attribution 4.0 International License.