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Four-quark scatterings in QCD III
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Four-quark scatterings in QCD III
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We study the full infrared dynamics of 2+1 flavour QCD with the functional renormalisation group approach. We resolve self-consistently the glue dynamics as well as the dynamics of chiral symmetry breaking. The computation hosts no phenomenological parameter or external input. The only ultraviolet input parameters are the physical ones in QCD: the light and strange quark masses. They are adjusted to the physical ratios of the pion and kaon masses, divided by the pion decay constant. The results for other observables of current first-principles computations are in quantitative agreement with the physical ones. This work completes the series of papers, initiated and furthered in [1,2], on dynamical chiral symmetry breaking and the emergence of mesonic bound states within the functional renormalisation group. As a first application we discuss the formation of light mesonic bound states. Amongst other applications such as the phase structure of QCD, the current work paves the way for studying QCD parton distribution functions within the functional renormalisation group approach to first-principles QCD.
Forward citations
Cited by 7 Pith papers
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All-loop four-quark Bethe-Salpeter kernel
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Functional renormalization group study of the jet quenching parameter near the QCD critical end point
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Kaon Distribution Amplitudes from Euclidean Functional QCD
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No planar degeneracy for the Landau gauge quark-gluon vertex
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