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arXiv · 2107.09291

Stationary states of Bose-Einstein condensed atoms rotating in an asymmetric ring potential

M. Ögren·Giannis Drougakis·Giorgos Vasilakis·Wolf von Klitzing·G. M. Kavoulakis
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Abstract

We consider a Bose-Einstein condensate, which is confined in a very tight toroidal/annular trap, in the presence of a potential, which breaks the axial symmetry of the Hamiltonian. We investigate the stationary states of the condensate, when its density distribution co-rotates with the symmetry-breaking potential. As the strength of the potential increases, we have a gradual transition from vortex excitation to solid-body-like motion. Of particular importance are states where the system is static and yet it has a nonzero current/circulation, which is a realization of persistent currents/reflectionless potentials.

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M. Ögren, Giannis Drougakis, Giorgos Vasilakis, Wolf von Klitzing, G. M. Kavoulakis. 2021-07-20. Stationary states of Bose-Einstein condensed atoms rotating in an asymmetric ring potential. https://doi.org/10.1088/1361-6455/ac1647

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