  The transport properties of neutron star matter play an important role in
many astrophysical processes. We report the results of a calculation of the
shear viscosity and thermal conductivity coefficients of the hard-sphere
fermion system of degeneracy $\nu$=2, that can be regarded as a model of pure
neutron matter. Our approach is based on the effective interaction obtained
from the formalism of correlated basis functions and the cluster expansion
technique. The resulting transport coefficients show a strong sensitivity to
the quasiparticle effective mass, reflecting the effect of second order
contributions to the self-energy that are not taken into account in nuclear
matter studies available in the literature.
