An appropriate, time-dependent modification of the trapping potential may be sufficient to create effectively collective excitations in a cold-atom Bose-Einstein condensate. The proposed method is complementary to earlier suggestions and should allow the creation of both dark solitons and vortices.
number of pulisher's sheets:
0,5
affiliation:
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego