We perform a stability analysis of the homogeneous ground state of nuclear matter against inhomogeneous perturbations of the pion condensate. In $\beta$ equilibrium, restricting the baryon species to nucleons only, we observe no instability; however, at high densities, the pseudoscalar density-density correlations assume a moat regime, i.e., a damped oscillatory patterned spatial correlation, which in momentum space appears as a nonzero global minimum for some finite three-momentum. When hyperons are permitted to appear, this minimum can cross down to negative values, which configures an instability toward an inhomogeneous pion condensate which ultimately will affect the equation of state.

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• Nuclear matter in neutron stars