Composite-Field Goldstone States and Higgs Mechanism in Dilute Bose   Gases
  We show that a composite-field (diatom) Goldstone state is expected in a dilute Bose gas for temperatures between the Bose gas critical temperature where the atom Bose-Einstein condensate appears and the temperature where superfluidity sets in. The presence of superfluidity is tied to the existence of a U(1) charge-two diatom condensate in the system. By promoting the global U(1) symmetry of the theory to a gauge symmetry, we find that the mass of the gauge particle generated through the Anderson-Higgs mechanism is related to the superfluid density via the Meissner effect and the superfluid density is related to the square of the anomalous density in the Bose system. 
Fred Cooper, Chih-Chun Chien, Bogdan Mihaila, John F. Dawson, and Eddy   Timmermans
cond-mat.quant-gas hep-ph nucl-th