High-redshift Mini-haloes from Modulated Preheating
  Intermittent type of primordial non-Gaussian fluctuations from modulated
preheating can produce an overabundance of $\sim 10^8M_\odot$ mini-haloes at
high redshift $z\gtrsim 20$. This may have a significant impact on the
formation of high-redshift supermassive black holes.
