Free expansion of a Bose-Einstein condensate at the presence of a thermal cloud

Details Free expansion of a Bose-Einstein condensate at the presence of a thermal cloud Free expansion of a Bose-Einstein condensate at the presence of a thermal cloud

2009-12-18

arxiv.org/abs/0912.3629v1

2010 J. Phys. B: At. Mol. Opt. Phys. 43 105303

Physics

Condensed Matter

Quantum Gases

Scientific paper

10.1088/0953-4075/43/10/105303

We investigate numerically the free-fall expansion of a $^{87}$Rb atoms condensate at nonzero temperatures. The classical field approximation is used to separate the condensate and the thermal cloud during the expansion. We calculate the radial and axial widths of the expanding condensate and find clear evidence that the thermal component changes the dynamics of the condensate. Our results are confronted against the experimental data.

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