English

High-redshift JWST Observations and Primordial Non-Gaussianity

Cosmology and Nongalactic Astrophysics 2023-02-22 v2 General Relativity and Quantum Cosmology

Abstract

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 Λ\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.

Keywords

Cite

@article{arxiv.2210.04812,
  title  = {High-redshift JWST Observations and Primordial Non-Gaussianity},
  author = {M. Biagetti and G. Franciolini and A. Riotto},
  journal= {arXiv preprint arXiv:2210.04812},
  year   = {2023}
}

Comments

10 pages, 4 figures. v2: matching published version

R2 v1 2026-06-28T03:10:00.833Z