# Bose-Einstein condensation in 3D

I have read in many books that BEC takes place in momentum space and in only 3-dimensions. What is meant by this statement?

-
Computing BEC in 1, 2, and 3 dimensions: physics.ucla.edu/~biritz/Comps/Solutions/01S/01S-13v2.pdf – Johannes Aug 5 '13 at 16:24
By the way: some excellent answers here - physics.stackexchange.com/q/4976 – Johannes Aug 5 '13 at 16:38
It is really helpful but what is meant by momentum space?Can BEC take place in higher dimensions as well?? – user27891 Aug 5 '13 at 16:39
The critical thing is the density of states in the limit E --> 0. Higher numbers of spatial dimensions are generally favorable for the occurence of BEC. – Johannes Aug 5 '13 at 16:42
I have checked them already.They give almost the same answer as is in the link. – user27891 Aug 5 '13 at 16:43