Infrared Behaviour of the Gluon Propagator: Confining or Confined?

Details Infrared Behaviour of the Gluon Propagator: Confining or Confined? Infrared Behaviour of the Gluon Propagator: Confining or Confined?

1995-06-13

arxiv.org/abs/hep-ph/9506314v2

Phys.Rev. D52 (1995) 5220-5228

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, latex, 2 figures

Scientific paper

10.1103/PhysRevD.52.5220

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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