| Issue |
Europhys. Lett.
Volume 51, Number 5, September I 2000
|
|
|---|---|---|
| Page(s) | 485 - 491 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2000-00363-0 | |
| Published online | 01 September 2002 | |
Observation of interaction dynamics in finite-temperature Bose condensed atom clouds
1
Rowland Institute for Science - Cambridge MA, 02142, USA
2
Department of Physics, Harvard University - Cambridge MA 02138, USA
3
Division of Engineering and Applied Sciences,
Harvard University Cambridge MA 02138, USA
Received:
24
May
2000
Accepted:
29
June
2000
We present measurements of finite-temperature atom clouds
cooled below the transition temperature for Bose-Einstein condensation. We
study the dynamics of the interface region between the Bose condensed and
noncondensed components of the atom clouds, where the time-dependent
density profile is highly sensitive to interactions between the two
components. We observe directly the effects of repulsion from the
condensate on the dynamics of noncondensed atoms. The measurements are
compared to calculations based on Hartree-Fock-Bogoliubov mean-field
theory. We infer a value for the spatial second-order correlation function
for noncondensed atoms of 
.
PACS: 03.75.Fi – Phase coherent atomic ensembles; quantum condensation phenomena / 05.30.Jp – Boson systems
© EDP Sciences, 2000
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