Heidelberg 2015 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 65: Heavy Ion Collisions and QCD Phases 9

HK 65.7: Vortrag

Donnerstag, 26. März 2015, 18:30–18:45, T/SR14

Chiral symmetry breaking in continuum QCD — •Mario Mitter, Jan M. Pawlowski, and Nils Strodthoff — Universität Heidelberg - Institut für Theoretische Physik, Deutschland, Heidelberg

We present a quantitative analysis of chiral symmetry breaking in two-flavour continuum QCD in the quenched limit. The theory is set-up at perturbative momenta, where asymptotic freedom leads to precise results. The evolution of QCD towards the hadronic phase is by means of dynamical hadronisation in the non-perturbative functional renormalisation group approach. We use a vertex expansion scheme based on gauge-invariant operators and discuss its convergence properties and the remaining systematic errors. In particular we present results for the quark propagator, the full tensor structure and momentum dependence of the quark-gluon vertex, and the four-fermi scatterings.