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JHEP 0003 (2000) 022
Motion of a scalar field coupled to a Yang Mills field reformulated locally with some gauge invariant variables
E. Chopin1
(2000)

This paper exposes a reformulation of some gauge theories in terms of explicitly gauge-invariant variables. We show in the case of Scalar QED that the classical theory can be reformulated locally with some gauge invariant variables. We discuss the form of some realistic asymptotic solutions to these equations. The equations of motion are then also reformulated in the non-abelian case.
1 :  LAPP - Laboratoire d'Annecy le Vieux de Physique des Particules
Physique/Physique des Hautes Energies - Phénoménologie

Physique/Physique des Hautes Energies - Théorie
Solitons Monopoles and Instantons – Gauge Symmetry
Lien vers le texte intégral : 
http://fr.arXiv.org/abs/hep-ph/0001125