Quadrupole oscillation of a single-vortex Bose-Einstein condensate: evidence for Kelvin modes.
نویسندگان
چکیده
We study the two transverse quadrupole modes of a cigar-shaped Bose-Einstein condensate with a single centered vortex. We show that the counterrotating mode is more strongly damped than in the absence of a vortex, whereas the corotating mode is not affected appreciably by the vortex. We interpret this result as a decay of the counterrotating quadrupole mode into two excitations of the vortex line, the so-called Kelvin modes. This is supported by direct observation of the vortex line.
منابع مشابه
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عنوان ژورنال:
- Physical review letters
دوره 90 10 شماره
صفحات -
تاریخ انتشار 2003