ON GAUGE-INVARIANCE AND SPONTANEOUS SYMMETRY-BREAKING

Authors
ASTE A SCHARF G DUTSCH M
Citation
A. Aste et al., ON GAUGE-INVARIANCE AND SPONTANEOUS SYMMETRY-BREAKING, Journal of physics. A, mathematical and general, 30(16), 1997, pp. 5785-5792
Citations number
10
Categorie Soggetti
Physics
Journal title
Journal of physics. A, mathematical and general → ACNP
ISSN journal
03054470
Volume
30
Issue
16
Year of publication
1997
Pages
5785 - 5792
Database
ISI
SICI code
0305-4470(1997)30:16<5785:OGASS>2.0.ZU;2-S
Abstract
We show how the widely used concept of spontaneous symmetry breaking c an be explained in causal perturbation theory by introducing a perturb ative version of quantum gauge invariance. Perturbative gauge invarian ce, formulated exclusively by means of asymptotic fields, is discussed for the simple example of Abelian U(1) gauge theory (Abelian Higgs mo del). Our findings are relevant for the electroweak theory, as pointed out elsewhere.