# The Stueckelberg Field

@article{Ruegg2003TheSF, title={The Stueckelberg Field}, author={Henri Ruegg and Mart{\'i} Ruiz-Altaba}, journal={International Journal of Modern Physics A}, year={2003}, volume={19}, pages={3265-3347} }

In 1938, Stueckelberg introduced a scalar field which makes an Abelian gauge theory massive but preserves gauge invariance. The Stueckelberg mechanism is the introduction of new fields to reveal a symmetry of a gauge--fixed theory. We first review the Stueckelberg mechanism in the massive Abelian gauge theory. We then extend this idea to the standard model, stueckelberging the hypercharge U(1) and thus giving a mass to the physical photon. This introduces an infrared regulator for the photon in…

## 315 Citations

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