Speaker
Description
One of the key ingredients for describing chiral symmetry breaking and quark mass generation is the quark-gluon vertex. In this work, we determine the transversely-projected quark-gluon vertex in unquenched QCD with two degenerate light dynamical quarks in the Landau gauge. This is accomplished by solving the Schwinger-Dyson equation within the 3PI effective action formalism, employing lattice data for the gluon and quark propagators, and the three-gluon vertex. Our results demonstrate that the classical form factor exhibits pronounced angular dependence and aligns remarkably well with recent lattice data in the soft-gluon limit. The remaining form factors are obtained via a single integration, revealing a clear hierarchy consistent with previous studies.
