Collective excitations of a Bose-Einstein condensate in an anharmonic trap

@inproceedings{Li2006CollectiveEO,
  title={Collective excitations of a Bose-Einstein condensate in an anharmonic trap},
  author={G. Li and Li-bin Fu and Ju-Kui Xue and Xuzong Chen and Jie Liu},
  year={2006}
}
  • G. Li, Li-bin Fu, +2 authors Jie Liu
  • Published 2006
  • Physics
  • We investigate the collective excitations of a one-dimensional Bose-Einstein condensate with repulsive interaction between atoms in a quadratic plus quartic trap. Using variational approaches, the coupled equations of motions for the center-of-mass coordinate of the condensate and its width are derived. Then, two low-energy excitation modes are obtained analytically. The frequency shift induced by the anharmonic distortion, and the collapse and revival of the collective excitations originating… CONTINUE READING