Evidence for a Critical Velocity in a Bose-Einstein Condensed Gas

Chandra Raman, Michael Köhl, Roberto Onofrio, Dallin Durfee, Chris Kuklewicz, Zoran Hadzibabic, Wolfgang Ketterle

Physical Review Letters · 1999 · 529 citations · 12 references

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Abstract

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.

References

12