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

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