Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1997-05-28
J.Phys.A30:5785-5792,1997
Physics
High Energy Physics
High Energy Physics - Theory
13 pages, latex, no figures
Scientific paper
10.1088/0305-4470/30/16/019
We show how the widely used concept of spontaneous symmetry breaking can be explained in causal perturbation theory by introducing a perturbative version of quantum gauge invariance. Perturbative gauge invariance, formulated exclusively by means of asymptotic fields, is discussed for the simple example of Abelian U(1) gauge theory (Abelian Higgs model). Our findings are relevant for the electroweak theory, as pointed out elsewhere.
Aste Andreas
D"utsch Michael
Scharf G"unter
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