Long-wavelength excitations of Higgs condensates
arXiv:hep-ph/0104239 · doi:10.1016/S0370-2693(01)00687-6
Abstract
Quite independently of the Goldstone phenomenon, recent lattice data suggest the existence of gap-less modes in the spontaneously broken phase of a $λΦ^4$ theory. This result is a direct consequence of the quantum nature of the `Higgs condensate' that cannot be treated as a purely classical c-number field.
6 pages