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Practical scheme from QCD to phenomena via Dyson-Schwinger equations

AuthorsTang, C.; Gao, F.; Liu, Y.X.
Issue DateSep-2019
PublisherAmerican Physical Society
CitationPhysical Review D 100 (5): 056001 (2019)
AbstractWe deliver a scheme to compute the quark propagator and the quark-gluon interaction vertex through the coupled Dyson-Schwinger equations (DSEs) of QCD. We take the three-gluon vertex into account in our calculations, and implement the gluon propagator and the running coupling function fitted by the solutions of their respective DSEs. We obtain the momentum and current mass dependence of the quark propagator and the quark-gluon vertex, and the chiral quark condensate that agrees with previous results excellently. We also compute the quark-photon vertex within this scheme and give the anomalous chromo- and electromagnetic moment of the quark. The obtained results are excellently consistent with previous ones. These applications manifest that the scheme is realistic and then practical for explaining the QCD-related phenomena.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.100.056001
Identifiersdoi: 10.1103/PhysRevD.100.056001
issn: 2470-0029
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