Hl. Shi et Wm. Zheng, CRITICAL-TEMPERATURE OF A TRAPPED INTERACTING BOSE-EINSTEIN GAS IN THE LOCAL-DENSITY APPROXIMATION, Physical review. A, 56(1), 1997, pp. 1046-1049
The Bose-Einstein gas in an external potential is studied by means of
the local-density approximation. An analytical result is derived for t
he dependence of the critical temperature of Bose-Einstein condensatio
n on the mutual interaction in a generic power-law potential.