Gauge invariance in gravity-like descriptions of massive gauge field theories

Details Gauge invariance in gravity-like descriptions of massive gauge field theories Gauge invariance in gravity-like descriptions of massive gauge field theories

2007-04-13

arxiv.org/abs/0704.1828v1

Physics

High Energy Physics

High Energy Physics - Theory

11 pages

Scientific paper

We discuss gravity-like formulations of massive Abelian and non-Abelian gauge field theories in four space-time dimensions with particular emphasis on the issue of gauge invariance. Alternative descriptions in terms of antisymmetric tensor fields and geometric variables, respectively, are analysed. In both approaches St\"uckelberg degrees of freedom factor out. We also demonstrate, in the Abelian case, that the massless limit for the gauge propagator, which does not exist in the vector potential formulation, is well-defined for the antisymmetric tensor fields.

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