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Dissipationless flow and superfluidity in gaseous Bose-Einstein condensates

C. Raman·R. Onofrio·J. M. Vogels·J. R. Abo-Shaeer·W. Ketterle
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Abstract

We study dissipation in a dilute Bose gas induced by the motion of a macroscopic object. A blue-detuned laser beam focused on the center of a trapped gas of sodium atoms was scanned both above and below the BEC transition temperature. The measurements allow for a comparison between the heating rates for the superfluid and normal gas.

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C. Raman, R. Onofrio, J. M. Vogels, J. R. Abo-Shaeer, W. Ketterle. 2000-08-29. Dissipationless flow and superfluidity in gaseous Bose-Einstein condensates. https://arxiv.org/abs/cond-mat/0008423

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