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arXiv · 0711.1423

Superfluidity of an interacting trapped quasi-2D Bose gas

T. P. Simula·M. J. Davis·P. B. Blakie
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Abstract

We investigate the harmonically trapped interacting Bose gas in a quasi-2D geometry using the classical field method. The system exhibits quasi-long-range order and non-classical rotational inertia at temperatures below the Berezinskii-Kosterlitz-Thouless cross-over to the superfluid state. In particular, we compute the scissors-mode oscillation frequencies and find that the irrotational mode changes its frequency as the temperature is sweeped across the cross-over thus providing microscopic evidence for the emergence of superfluidity.

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T. P. Simula, M. J. Davis, P. B. Blakie. 2007-11-09. Superfluidity of an interacting trapped quasi-2D Bose gas. https://doi.org/10.1103/physreva.77.023618

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