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Thanks to the rapid progress in precision cosmology in the last few years, wenow have access to physical observables that may constrain the theory ofinflation through the non-Gaussianity (NG) signatures in the cosmic microwavebackground radiation and the distribution of large-scale structure. Numericalmodeling of the NG signals from different inflation models is essential tocorrectly interpret current and near future data from large-scale structuresurveys. In this study, we use high-resolution cosmological hydrodynamicalsimulations to investigate the effects of primordial NG on the formation andevolution of galaxies from the cosmic dawn to the present day. Focusing on thelocal type primordial NG, we find that it may affect the formation history ofstars and black holes in galaxies, and their distribution. Compared to theGaussian case, large non-Gaussian potential with $f_{NL} \gtrsim 10^3$ leads toearlier collapse of the first structures, more massive galaxies especially athigh redshifts, stronger clustering of galaxies, and higher halo bias. However,for smaller NG with $f_{NL} \lesssim 10^2$, the effect is significantly weaker.Observations of the distribution and properties of high-redshift, rare objectssuch as the first galaxies and quasars may provide further constraints on theprimordial NG.

The Effects of Local Primordial Non-Gaussianity on the Formation and Evolution of Galaxies