Non-Gaussianities, early Universe, and GRBs. Tracing the primeval state
  of the Universe with number counts of Gamma-Ray Bursts
  We investigate the effects of primordial non-Gaussianities in the primordial
Universe on the baryonic structure formation process. By relating the cosmic
star formation rate in Gaussian and non-Gaussian scenarios to the detectability
of high-redshift sources of reionization, we derive the expected Gamma-Ray
Burst rate in the different models. We find that counts of high-redshift
Gamma-Ray Bursts can be used as cosmological probes of non-Gaussianities and
that they are suitable candidates to distinguish non-Gaussian effects at early
epochs.
