Free-fall expansion of finite-temperature Bose-Einstein condensed gas in the non Thomas-Fermi regime

Details Free-fall expansion of finite-temperature Bose-Einstein condensed gas in the non Thomas-Fermi regime Free-fall expansion of finite-temperature Bose-Einstein condensed gas in the non Thomas-Fermi regime

2008-11-11

arxiv.org/abs/0811.1672v1

Physics

Condensed Matter

Other Condensed Matter

8 pages, 4 figures

Scientific paper

10.1088/0953-4075/41/24/241001

We report on our study of the free-fall expansion of a finite-temperature Bose-Einstein condensed cloud of 87Rb. The experiments are performed with a variable total number of atoms while keeping constant the number of atoms in the condensate. The results provide evidence that the BEC dynamics depends on the interaction with thermal fraction. In particular, they provide experimental evidence that thermal cloud compresses the condensate.

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