Weakly interacting Bose-Einstein condensates in temperature-dependent   generic traps
  The shift in condensation temperature caused by interactions is studied up to second order in the s-wave scattering length in a Bose-Einstein condensate trapped in a temperature-dependent three-dimensional generic potential. With no assumptions other than the mean-field approach and semiclassical approximations it is shown that the inclusion of a temperature-dependent trap improves the empirical values of the numerical parameters compared to those obtained in previous reports on the temperature shift. 
E. Castellanos, F. Briscese, M. Grether and M. de Llano
cond-mat.quant-gas