We investigate the effect of including hadronic resonance contributions in the description of light quarks and mesons. To this end we take into account the back-coupling of the pion onto the quark propagator within the non-perturbative continuum framework of Schwinger-Dyson equations (SDE) and Bethe-Salpeter equations (BSE), in essence describing the so-called \emph{ pion-cloud}. As a result of our study we find that an unquenching of this form provides for considerable effects in the spectrum of light mesons.
Categories: hep-ph nucl-th