Physics – Quantum Physics
Scientific paper
2006-06-19
Physical Review A 74 (07/11/2006) 053607
Physics
Quantum Physics
Scientific paper
10.1103/PhysRevA.74.053607
We have studied one-body and two-body correlation functions in a ballistically expanding, non-interacting atomic cloud in the presence of gravity. We find that the correlation functions are equivalent to those at thermal equilibrium in the trap with an appropriate rescaling of the coordinates. We derive simple expressions for the correlation lengths and give some physical interpretations. Finally a simple model to take into account finite detector resolution is discussed.
Belsley Michael
Boiron Denis
Gomes Jose Viana
Perrin Aurélien
Schellekens Martijn
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