Structural change of vortex patterns in anisotropic Bose-Einstein condensates
Lo Gullo, Nicola
American Physical Society
We study the changes in the spatial distribution of vortices in a rotating Bose-Einstein condensate due to an increasing eccentricity of the trapping potential. By breaking the rotational symmetry, the vortex system undergoes a rich variety of structural changes, including the formation of zigzag and linear configurations. These spatial rearrangements are well signaled by the change in the behavior of the vortex-pattern eigenmodes against the eccentricity parameter. This behavior allows to actively control the distribution of vorticity in many-body systems and opens the possibility of studying interactions between quantum vortices over a large range of parameters.
Lo Gullo, N., Busch, T. and Paternostro, M. (2011) 'Structural change of vortex patterns in anisotropic Bose-Einstein condensates', Physical Review A, 83(5), 053612 (5pp). doi: 10.1103/PhysRevA.83.053612
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