The Wilson loop from a Dyson equation

Details The Wilson loop from a Dyson equation The Wilson loop from a Dyson equation

2009-10-15

arxiv.org/abs/0910.2916v1

Phys.Rev.D80:125022,2009

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, 7 figures

Scientific paper

10.1103/PhysRevD.80.125022

The Dyson equation proposed for planar temporal Wilson loops in the context of supersymmetric gauge theories is critically analysed thereby exhibiting its ingredients and approximations involved. We reveal its limitations and identify its range of applicability in non-supersymmetric gauge theories. In particular, we show that this equation is applicable only to strongly asymmetric planar Wilson loops (consisting of a long and a short pair of loop segments) and as a consequence the Wilsonian potential can be extracted only up to intermediate distances. By this equation the Wilson loop is exclusively determined by the gluon propagator. We solve the Dyson equation in Coulomb gauge for the temporal Wilson loop with the instantaneous part of the gluon propagator and for the spatial Wilson loop with the static gluon propagator obtained in the Hamiltonian approach to continuum Yang-Mills theory and on the lattice. In both cases we find a linearly rising color potential.

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