Collective Excitations of a Dipolar Bose-Einstein Condensate
Collective Excitations of a Dipolar Bose-Einstein Condensate
We have measured the effect of dipole-dipole interactions on the frequency of a collective mode of a Bose-Einstein condensate. At relatively large numbers of atoms, the experimental measurements are in good agreement with zero temperature theoretical predictions based on the Thomas-Fermi approach. Experimental results obtained for the dipolar shift of …