Abstract
Spontaneous symmetry breakings in indefinite metric quantum field theories are analyzed and a generalization of the Goldstone theorem is proved. The case of local gauge quantum field theories is discussed in detail and a characterization is given of the occurrence of the Higgs mechanism versus the Goldstone mechanism. The Higgs phenomenon is explained on general grounds without the introduction of the so-called Higgs fields. The basic property is the relation between the local internal symmetry group and the local group of gauge transformations of the second kind. Spontaneous symmetry breaking ofc-number gauge transformations of the second kind is shown to always occur if there are charged local fields. The implications about the absence of mass gap in the Wightman functions and the occurrence of massless particles associated with the unbroken generators in the Higgs phenomenon are discussed.
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Communicated by A. Jaffe
Supported in part by NSF Grant MPS 74-22844
On leave from Scuola Normale Superiore INFN, I-56100 Pisa, Italy
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Strocchi, F. Spontaneous symmetry breaking in local gauge quantum field theory; the Higgs mechanism. Commun.Math. Phys. 56, 57–78 (1977). https://doi.org/10.1007/BF01611117
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DOI: https://doi.org/10.1007/BF01611117