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We calculate the shear viscosity $\eta$ and thermal conductivity $\kappa$ ofa nuclear pasta phase in neutron star crusts. This involves complexnon-spherical shapes. We use semiclassical molecular dynamics simulationsinvolving 40,000 to 100,000 nucleons. The viscosity $\eta$ can be simplyexpressed in terms of the height $Z^*$ and width $\Delta q$ of the peak in thestatic structure factor $S_p(q)$. We find that $\eta$ increases somewhat,compared to a lower density phase involving spherical nuclei, because $Z^*$decreases from form factor and ion screening effects. However, we do not find adramatic increase in $\eta$ from non-spherical shapes, as may occur inconventional complex fluids.

The Shear Viscosity and Thermal Conductivity of Nuclear Pasta