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Infrared Behaviour of the Gluon Propagator: Confining or Confined?

Kirsten Büttner·M. R. Pennington
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Abstract

The possible infrared behaviour of the gluon propagator is studied analytically, using the Schwinger-Dyson equations, in both the axial and the Landau gauge. The possibility of a gluon propagator less singular than $1/k^{2}$ when $k^{2} \rightarrow 0$ is investigated and found to be inconsistent, despite claims to the contrary, whereas an infrared enhanced one is consistent. The implications for confinement are discussed.

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Kirsten Büttner, M. R. Pennington. 1995-06-13. Infrared Behaviour of the Gluon Propagator: Confining or Confined?. https://doi.org/10.1103/physrevd.52.5220

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