Suppression and enhancement of impurity scattering in a Bose-Einstein condensate

Details Suppression and enhancement of impurity scattering in a Bose-Einstein condensate Suppression and enhancement of impurity scattering in a Bose-Einstein condensate

2000-03-23

arxiv.org/abs/cond-mat/0003387v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.85.483

Impurity atoms propagating at variable velocities through a trapped Bose-Einstein condensate were produced using a stimulated Raman transition. The redistribution of momentum by collisions between the impurity atoms and the stationary condensate was observed in a time-of-flight analysis. The collisional cross section was dramatically reduced when the velocity of the impurities was reduced below the speed of sound of the condensate, in agreement with the Landau criterion for superfluidity. For large numbers of impurity atoms, we observed an enhancement of atomic collisions due to bosonic stimulation. This enhancement is analogous to optical superradiance.

Affiliated with

Also associated with

No associations

Rating

Suppression and enhancement of impurity scattering in a Bose-Einstein condensate does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Suppression and enhancement of impurity scattering in a Bose-Einstein condensate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Suppression and enhancement of impurity scattering in a Bose-Einstein condensate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-370100