Abstract
Various QCD correlators are calculated in the instanton liquid model in zeromode approximation and
1/
N
c
expansion. Previous works are extended by including dynamical quark loops. In contrast to the original "perturbative"
1/
N
c
expansion not all quark loops are suppressed. In the flavor singlet meson correlators a chain of quark bubbles survives the
N
c
→∞
limit causing a massive
η
′
in the pseudoscalar correlator while keeping massless pions in the triplet correlator. The correlators are plotted and meson masses and couplings are obtained from a spectral fit. They are compared to the values obtained from numerical studies of the instanton liquid and to experimental results.