Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9857662 | Nuclear Physics B - Proceedings Supplements | 2005 | 6 Pages |
Abstract
In Landau gauge QCD, the infrared behavior of the propagator of transverse gluons can be analytically determined to be a power law from Dyson-Schwinger equations. This propagator clearly shows positivity violation, indicating the absence of the transverse gluons from the physical spectrum, i.e. gluon confinement. A simple analytic structure for the gluon propagator is proposed capturing all important features. We provide arguments that the Landau gauge quark propagator possesses a singularity on the real timelike axis. For this propagator we find a positive definite Schwinger function.
Related Topics
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Authors
R. Alkofer, W. Detmold, C.S. Fischer, P. Maris,