Gluon mass and freezing of the QCD coupling
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Gluon mass and freezing of the QCD coupling

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Gluon mass and freezing of the QCD coupling

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Aguilar, Arlene Cristina; Papavassiliou, Joannis
Aquest document és un/a article, creat/da en: 2008
Infrared finite solutions for the gluon propagator of pure QCD are obtained from the gauge-invariant non-linear Schwinger-Dyson equation formulated in the Feynman gauge of the background field method. These solutions may be fitted using a massive propagator, with the special characteristic that the effective mass employed drops asymptotically as the inverse square of the momentum transfer, in agreement with general operator-product expansion arguments. Due to the presence of the dynamical gluon mass the strong effective charge extracted from these solutions freezes at a finite value, giving rise to an infrared fixed point for QCD.

    Aguilar, Arlene Cristina Papavassiliou, Joannis 2008 Gluon mass and freezing of the QCD coupling Journal of physics. Conference series 110 7 022040
http://dx.doi.org/10.1088/1742-6596/110/2/022040
distribuït sota llicència Creative Commons de Reconeixement-NoComercial 3.0 No adaptada

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