2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/18842We make some remarks on massless neutral boson in two-flavour Abelian Higgs model. {\bf Note added:} {\it this remark was merged with journal version of cond-mat/0111192 on a referee request.}v3: Merged with the journal version of cond-mat/0111192 on a referee request. v4: references addedSuperconductivityHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext