The Moment of Inertia and the Scissors Mode of a Bose-condensed Gas

Details The Moment of Inertia and the Scissors Mode of a Bose-condensed Gas The Moment of Inertia and the Scissors Mode of a Bose-condensed Gas

2001-09-11

arxiv.org/abs/cond-mat/0109193v1

Physics

Condensed Matter

Statistical Mechanics

14 pages, 5 figs

Scientific paper

10.1088/0953-8984/14/3/305

We relate the frequency of the scissors mode to the moment of inertia of a trapped Bose gas at finite temperature in a semi-classical approximation. We apply these theoretical results to the data obtained in our previous study of the properties of the scissors mode of a trapped Bose-Einstein condensate of $^{87}$Rb atoms as a function of the temperature. The frequency shifts that we measured show quenching of the moment of inertia of the Bose gas at temperatures below the transition temperature - the system has a lower moment of inertia that of a rigid body with the same mass distribution, because of superfluidity.

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