Experimental studies of equilibrium vortex properties in a Bose-condensed gas Academic Article uri icon

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abstract

  • We characterize several equilibrium vortex effects in a rotating Bose-Einstein condensate. Specifically we attempt precision measurements of vortex lattice spacing and the vortex core size over a range of condensate densities and rotation rates. These measurements are supplemented by numerical simulations, and both experimental and numerical data are compared to theory predictions of Sheehy and Radzihovsky [17] (cond-mat/0402637) and Baym and Pethick [25] (cond-mat/0308325). Finally, we study the effect of the centrifugal weakening of the trapping spring constants on the critical temperature for quantum degeneracy and the effects of finite temperature on vortex contrast.

authors

  • Coddington, I
  • Haljan, PC
  • Engels, Paul
  • Schweikhard, V
  • Tung, S
  • Cornell, EA

publication date

  • December 1, 2004