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cond-mat1998
Berry's Phase Induced Bose-Einstein condensation into a Vortex State
M. Olshanii, M. Naraschewski
The existence of a geometric phase in magnetic traps can be used to Bose condense a magnetically trapped atomic gas into a vortex state. We propose an experimental setup where a ma…
cond-mat1998
Finite-Temperature Collective Excitation of a Bose-Einstein Condensate
Maxim Olshanii
We derive a simple formula for the finite-temperature shifts of the collective excitations of a Bose-Einstein condensate. To test the validity of our treatment we apply it to expla…