Evidence for a critical velocity in a Bose-Einstein condensed gas

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.

4 pages, 3 figures

References in corpus (3)

• Measurements of Relative Phase in Binary Mixtures of Bose-Einstein Condensates
• Pressure drag in linear and nonlinear quantum fluids
• Coherent Dynamics of Vortex Formation in Trapped Bose-Einstein Condensates

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