Sammendrag
We perform Monte Carlo studies of vortices in three dimensions in a cylindrical confinement,
with uniform and nonuniform density. The former is relevant to rotating 4He, the latter is
relevant to a rotating trapped Bose--Einstein condensate. In the former case we find dominant
angular thermal vortex fluctuations close to the cylinder wall. For the latter case, a novel
effect is that at low temperatures the vortex solid close to the center of the trap crosses
directly over to a tension-less vortex tangle near the edge of the trap. At higher temperatures
an intermediate tensionful vortex liquid located between the vortex solid and the vortex tangle,
may exist.
Email: asle.sudbo@ntnu.no
Presenting author: Asle Sudbø
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