Dynamical rearrangement in the Anderson-Higgs-Kibble mechanism

The Anderson-Higgs-Kibble mechanism is investigated by functional methods in the Lorentz gauge, with particular emphasis on the particle structure. We find that a massless Goldstone boson and a massless ghost particle are present besides the massive vector meson and other massive particles. The two massless particles do not contribute to matrix elements of the S-matrix or any gauge invariant quantity, because their effects compensate each other, but their presence is essential as agents of the symmetry transformation. The modification when Coulomb gauge is employed are also discussed (Auth.)