  Exotic non-spherical configurations of nuclei, known as ``pasta" phases, are
expected to be present at the bottom of the inner crust of a neutron star. We
study the properties of these configurations in catalyzed neutron stars within
a compressible liquid-drop model approach, with surface parameters optimized to
reproduce experimental nuclear masses. Our results show that the properties of
the pasta phases exhibit strong model dependence. To estimate the model
uncertainties, a Bayesian analysis is performed, combining information from
nuclear physics experiments and chiral perturbation theoretical calculations
with astrophysical observations. The inferred posterior distributions are
discussed, with particular focus on the effect of the low-density energy
functional on the predictions.
