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arXiv · 1706.06326

Non-perturbative quark, gluon and meson correlators of unquenched QCD

Anton K. Cyrol·Mario Mitter·Jan M. Pawlowski·Nils Strodthoff
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Abstract

We present non-perturbative first-principle results for quark-, gluon- and meson $1$PI correlation functions of two-flavour Landau-gauge QCD in the vacuum. These correlation functions carry the full information about the theory. They are obtained by solving their Functional Renormalisation Group equations in a systematic vertex expansion, aiming at apparent convergence. This work represents a crucial prerequisite for quantitative first-principle studies of the QCD phase diagram and the hadron spectrum within this framework. In particular, we have computed the gluon, ghost, quark and scalar-pseudoscalar meson propagators, as well as gluon, ghost-gluon, quark-gluon, quark, quark-meson, and meson interactions. Our results stress the crucial importance of the quantitatively correct running of different vertices in the semi-perturbative regime for describing the phenomena and scales of confinement and spontaneous chiral symmetry breaking without phenomenological input.

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Anton K. Cyrol, Mario Mitter, Jan M. Pawlowski, Nils Strodthoff. 2017-06-20. Non-perturbative quark, gluon and meson correlators of unquenched QCD. https://doi.org/10.1103/physrevd.97.054006

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