Macroscopic dynamics of a Bose-Einstein condensate containing a vortex lattice

Details Macroscopic dynamics of a Bose-Einstein condensate containing a vortex lattice Macroscopic dynamics of a Bose-Einstein condensate containing a vortex lattice

2002-11-14

arxiv.org/abs/cond-mat/0211294v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 4 figures

Scientific paper

10.1103/PhysRevA.67.041602

Starting from the equations of rotational hydrodynamics we study the macroscopic behaviour of a trapped Bose-Einstein condensate containing a large number of vortices. The stationary configurations of the system, the frequencies of the collective excitations and the expansion of the condensate are investigated as a function of the angular velocity of the vortex lattice. The time evolution of the condensate and of the lattice geometry induced by a sudden deformation of the trap is also discussed and compared with the recent experimental results of P. Engels et al., Phys. Rev. Lett. 89, 100403 (2002).

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