Winding up superfluid in a torus via Bose Einstein condensation

Details Winding up superfluid in a torus via Bose Einstein condensation Winding up superfluid in a torus via Bose Einstein condensation

2011-02-27

arxiv.org/abs/1102.5474v1

Scientific Reports 2, Article number 352 (See the Latest Version via Nature Open Access Link: http://www.nature.com/srep/201

Physics

Condensed Matter

Other Condensed Matter

4+ pages, 4 Figs

Scientific paper

10.1038/srep00352

We simulate Bose-Einstein condensation (BEC) in a ring employing stochastic Gross-Pitaevskii equation and show that cooling through the critical temperature can generate spontaneous quantized circulation around the ring of the newborn condensate. Dispersion of the resulting winding numbers follows scaling law predicted by the Kibble-Zurek mechanism (KZM). Density growth also exhibits scaling behavior consistent with KZM. This paves a way towards experimental verification of KZM scalings, and experimental determination of critical exponents for the BEC transition.

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