Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-12-21
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 5 figures. Talk presented by DB at the International Workshop on QCD Green's Functions, Confinement, and Phenomenolo
Scientific paper
The gauge-invariant generation of a dynamical, momentum-dependent gluon mass is intimately connected with the presence of non-perturbative massless poles in the vertices of the theory, which trigger the well-known Schwinger mechanism. In the deep infrared the integral equation that governs this effective gluon mass assumes a particularly simple form, which may be derived following two seemingly different, but ultimately equivalent procedures. In particular, it may be obtained either as a deviation from a special identity that enforces the masslessness of the gluon in the absence of massless poles, or as a direct consequence of the appearance of a non-vanishing bound-state wave function, associated with the details of the actual formation of these massless poles. In this presentation we demonstrate that, due to profound relations between the various ingredients, the two versions of the gluon mass equation are in fact absolutely identical.
Binosi Daniele
Papavassiliou Joannis
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