  I calculate the rate of electromagnetic scattering in degenerate and
partially degenerate plasmas composed of electrons, muons, protons, and
neutrons. Correlations with strong interactions, induced by the polarizability
of electromagnetically and strongly charged protons, are taken into account. At
subnuclear densities induced interactions are shown to cause a drastic increase
of the longitudinal scattering rate. The results obtained are particularly
relevant for the electron contribution to transport in the outer core of
neutron stars, and represent a first step towards a realistic calculation of
transport phenomena in neutron star mergers.
