Cosmological Simulations of Multi-Component Cold Dark Matter
  The nature of dark matter is unknown. A number of dark matter candidates are
quantum flavor-mixed particles but this property has never been accounted for
in cosmology. Here we explore this possibility from the first principles via
extensive $N$-body cosmological simulations and demonstrate that the
two-component dark matter model agrees with observational data at all scales.
Substantial reduction of substructure and flattening of density profiles in the
centers of dark matter halos found in simulations can simultaneously resolve
several outstanding puzzles of modern cosmology. The model shares the "why
now?" fine-tuning caveat pertinent to all self-interacting models. Predictions
for direct and indirect detection dark matter experiments are made.
