  We analyse the renormalisation properties of composite operators of scalar
fields in the N=2 Super Yang-Mills theory. We compute the matrix of anomalous
dimensions in the planar limit at one-loop order in the 't Hooft coupling, and
show that it corresponds to the Hamiltonian of an integrable XXZ spin chain
with an anisotropy parameter Delta>1. We suggest that this parameter could be
related to the presence of non-trivial two-form fluxes in the dual supergravity
background. We find that the running of the gauge coupling does not affect the
renormalization group equations for these composite operators at one-loop
order, and argue that this is a general property of gauge theories which is not
related to supersymmetry.
