Condensate fraction
Condensate fraction, N0/N, measured as a function of scaled temperature, T/T0, at Boulder. T0 is the predicted critical temperature for an ideal gas in a harmonic trap in the thermodynamic limit (many atoms).
The solid curve is the predicted dependence in the thermodynamic limit, and the dotted curve includes a correction for the finite number of atoms (4000) in the condensate. To the uncertainties in the data, the measurement is consistent with the theory for non-interacting bosons. The dashed line is a best fit to the experimental data.