Abstract
Symmetry groups generated by charges which obey Gauss’ law are discussed as characteristic features of local gauge quantum field theories. The existence of such symmetry groups in a local quantum field theory leads to very important properties. In particular, unbroken charges obeying Gauss’ law always define superselection rules and their breaking always leads to the Higgs phenomenon, which has therefore a quite general explanation, related to Gauss’ law, without the introduction of Higgs fields.
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