Hysteresis and persistent currents in a rotating Bose-Einstein condensate with anharmonic confinement

Details Hysteresis and persistent currents in a rotating Bose-Einstein condensate with anharmonic confinement Hysteresis and persistent currents in a rotating Bose-Einstein condensate with anharmonic confinement

2004-02-13

arxiv.org/abs/cond-mat/0402367v1

Phys. Rev. A, 70, (2004) 023601

Physics

Condensed Matter

Other Condensed Matter

4 pages, 4 ps figures, RevTex

Scientific paper

10.1103/PhysRevA.70.023601

We examine a Bose-Einstein condensate of atoms that rotates in a quadratic-plus-quartic potential. It is shown that states of different circulation can be metastable. As a result, we demonstrate that the gas can exhibit hysteresis as the angular frequency of rotation of the trap is varied. The simplicity of the picture that emerges for small coupling strengths suggests that this system may be attractive for studies of phase transitions.

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