  The spectrum of light bound states in an SU(2) gauge theory with two flavors
of fundamentally charged fermions is investigated by solving the Bethe-Salpeter
equations in the respective channels within a 3PI-type (i.e., beyond
rainbow-ladder) truncation including self-consistently a correspondingly
truncated fermion--gauge-boson vertex. Remarkable differences with respect to
the meson spectrum of an SU(3) gauge theory are found although in our approach
these are not as pronounced as indicated by some recent respective
investigations within lattice gauge field theory.
