ISSN:
1434-6052
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract. In the unitary gauge the unphysical degrees of freedom of spontaneously broken gauge theories are eliminated. The Feynman rules are simpler than in other gauges, but it is non-renormalizable by the rules of power counting. On the other hand, it is formally equal to the limit $\xi \to 0$ of the renormalizable R $_{\xi}$ -gauge. We consider perturbation theory to one-loop order in the R $_{\xi}$ -gauge and in the unitary gauge for the case of the two-dimensional abelian Higgs model. An apparent conflict between the unitary gauge and the limit $\xi \to 0$ of the R $_{\xi}$ -gauge is resolved, and it is demonstrated that results for physical quantities can be obtained in the unitary gauge.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1140/epjc/s2003-01327-9
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