On the order of BEC transition in weakly interacting gases predicted by mean-field theory

L. Olivares-Quiroz, V. Romero-Rochin

Predictions from Hartree-Fock (HF), Popov (P), Yukalov-Yukalova (YY) and $t$-matrix approximations regarding the thermodynamics from the normal to the BEC phase in weakly interacti…