NIST: Physics Laboratory: Research Program

TECHNICAL ACTIVITIES 1998 - NISTIR 6268

ELECTRON AND OPTICAL PHYSICS DIVISION

condensate density for rotational frequency of 0.5 phase frequency of 0.5
condensate density for rotational frequency of 0.52 phase frequency of 0.52
condensate density for rotational frequency of 0.55 phase frequency of 0.55
Vortex structures in a rotating Bose-Einstein condensate. These vortex structures were obtained by solving the time-dependent Gross-Pitaevski equation for a system of 105 atoms of 87Rb in a deformed TOP trap. The condensate density (left) and phase (right) in the plane of rotation are shown for rotational frequencies of 0.5, 0.52, and 0.55 times the frequency of the tight axis (respectively upper, center, and lower frames). The upper frames show irrotational flow of the condensate; in the middle and lower figures, vortices penetrate the condensate and form vortex arrays.

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