希釈ボーズ・アインシュタイン凝縮における超流動ジャイロスコープの実験的観察

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I wrote an outline of a paper written by reseachers at Clarendon Laboratry, University of Oxford, titled "Experimental Observation of a Superfluid Gyroscope in a Dilute Bose-Einstein Condensation" They have observed three-dimensional Gyroscopic effect and realization of a superfluid Gyroscope as discussed by Stringari in [4]. The experiment is performed on Rb^<87> condensate produced by forced rf evaporative cooling in a time orbiting potential trap, In this experiment, they combine two striking superfluid effects. 0ne is the production of guantized vortices, and the other one is reduced moment of inertia associated with the excitation of the scissors mode. From this they deduce the angular momentum associated with the voltex line and found a value close to h per particle as predicted for a superfluid.
2004-03-20