We analyze the correlation function of a meson with one heavy and one
light quark in inverse powers of the heavy quark mass m(Q) using a suc
cession of Foldy-Wouthuysen-type transformations prior to radiative co
rrections. We evaluate the correlator to order m(Q)(0) in a random and
dilute gas of instantons, using the planar approximation, We show, in
leading order in the density, that the heavy quark mass is shifted to
the order m(Q)(0) and that the induced interaction between the heavy
and light quarks is attractive. We also find it to be an order of magn
itude smaller than the 't Hooft interaction between two light quarks.
The shift in the heavy quark mass is related to the perimeter law of l
arge Wilson loops. The relevance of these results for general hadronic
correlators with heavy quarks is discussed.