Abstract :
Due to the peculiar nature of the underlying medium, density fluctuations in a ‘Higgs condensate’ are predicted to propagate for infinitely long wavelengths with a group velocity cs→∞. On the other hand, for any large but finite cs there is a weak, attractive 1/r potential of strength 1/c2s and the energy spectrum deviates from the purely massive form p2+M2h at momenta smaller than δ∼Mh/cs. Physically, the length scale δ−1 corresponds to the mean free-path for the elementary constituents in the condensate and would naturally be placed in the millimeter range.
