On the existence of a nonuniform spin-isospin ordered phase in high-density neutron matter

Using a Jastrow-like correlated wavefunction and a realistic two-body interaction, the energy per particle of neutron matter has been evaluated both in the normal uniform phase and in a π0-condensed phase exhibiting one-dimensional density fluctuations and spin-isospin order. The numerical results indicate that the standard configuration is energetically favored, even at very high densities. (orig.)