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1999-09-07
Evidence for a critical velocity in a Bose-Einstein condensed gas
C. RamanM. KohlR. OnofrioD. S. DurfeeC. E. KuklewiczZ. HadzibabicW. Ketterle
文献摘要
We have studied dissipation in a Bose–Einstein condensed gas by moving a blue detuned laser beam through the condensate at different velocities. Strong heating was observed only above a critical velocity.
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