Mean-field expansion in Bose-Einstein condensates with finite-range interactions
arXiv:cond-mat/0505074 · doi:10.1142/S0217979206035631
Abstract
We present a formal derivation of the mean-field expansion for dilute Bose-Einstein condensates with two-particle interaction potentials which are weak and finite-range, but otherwise arbitrary. The expansion allows for a controlled investigation of the impact of microscopic interaction details (e.g., the scaling behavior) on the mean-field approach and the induced higher-order corrections beyond the s-wave scattering approximation.
6 pages of RevTex4; extended discussion, added references