Direct observation of irrotational flow and evidence of superfluidity in a rotating Bose-Einstein condensate
Physical Review Letters 88 (2002) 070406 4pp
Vortex nucleation in Bose-Einstein condensates in an oblate, purely magnetic potential
Physical Review Letters 86 (2002) 010405 4pp
Influence of background pressure on the stability region of a Paul trap
European Journal of Physics IOP Publishing 22:6 (2001) 563-573
Temperature dependence of damping and frequency shifts of the scissors mode of a trapped Bose-Einstein condensate.
Physical review letters 86:18 (2001) 3938-3941
Abstract:
We have studied the properties of the scissors mode of a trapped Bose-Einstein condensate of 87Rb atoms at finite temperature. We measured a significant shift in the frequency of the mode below the hydrodynamic limit and a strong dependence of the damping rate as the temperature increased. We compared our damping rate results to recent theoretical calculations for other observed collective modes, finding a fair agreement. From the frequency measurements we deduce the moment of inertia of the gas and show that it is quenched below the transition point, because of the superfluid nature of the condensed gas.Experimental observation of Beliaev coupling in a Bose-Einstein condensate.
Phys Rev Lett 86:11 (2001) 2196-2199