High-redshift JWST Observations and Primordial Non-Gaussianity

Understand

Several bright and massive galaxy candidates at high redshifts have been recently observed by the James Webb Space Telescope.

• Such early massive galaxies seem difficult to reconcile with standard $\Lambda$ Cold Dark Matter model predictions.
• We discuss under which circumstances such observed massive galaxy candidates can be explained by introducing primordial non-Gaussianity in the initial conditions of the cosmological perturbations.