High-redshift JWST Observations and Primordial Non-Gaussianity

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 $\Lambda$ 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.

10 pages, 4 figures. v2: matching published version

References in corpus (21)

• The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
• The halo mass function from the dark ages through the present day
• A Long Time Ago in a Galaxy Far, Far Away: A Candidate z ~ 12 Galaxy in Early JWST CEERS Imaging
• Effects of Scale-Dependent Non-Gaussianity on Cosmological Structures
• Discovery and properties of ultra-high redshift galaxies ($9<z<12$) in the JWST ERO SMACS 0723 Field
• The Halo Mass Function: High-Redshift Evolution and Universality
• Revealing Galaxy Candidates out to $z\sim 16$ with JWST Observations of the Lensing Cluster SMACS0723
• Extreme Value Statistics of the Halo and Stellar Mass Distributions at High Redshift: are JWST Results in Tension with ΛCDM?
• Scale-dependent non-Gaussianity probes inflationary physics
• Accelerating early massive galaxy formation with primordial black holes
• First Batch of Candidate Galaxies at Redshifts 11 to 20 Revealed by the James Webb Space Telescope Early Release Observations
• Balancing the efficiency and stochasticity of star formation with dust extinction in z > 10 galaxies observed by JWST
• High-Redshift Galaxies from Early JWST Observations: Constraints on Dark Energy Models
• Dark matter halo abundances, clustering and assembly histories at high redshift
• Testing the Running of non-Gaussianity through the CMB mu-distortion and the Halo Bias
• Strongly Scale-dependent Non-Gaussianity
• Scale-Dependent Non-Gaussianity as a Generalization of the Local Model
• Negative spectral index of $f_{NL}$ in the axion-type curvaton model
• A Study of High-Order Non-Gaussianity with Applications to Massive Clusters and Large Voids
• Scale dependence of $f_{NL}$ in N-flation
• Exploring the effects of primordial non-Gaussianity at galactic scales

Cited by in corpus (27)

• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Dark energy in light of the early JWST observations: case for a negative cosmological constant?
• Primordial power spectrum in light of JWST observations of high redshift galaxies
• Negative cosmological constant in the dark energy sector: tests from JWST photometric and spectroscopic observations of high-redshift galaxies
• A double take on early and interacting dark energy from JWST
• Alleviating the need for exponential evolution of JWST galaxies in 10${}^{10}{M}_{\odot }$ haloes at $z>10$ by a modified $\Lambda$CDM power spectrum
• Rapidly growing primordial black holes as seeds of the massive high-redshift JWST Galaxies
• Early Structure Formation from Cosmic String Loops in Light of Early JWST Observations
• JWST high-z galaxy constraints on warm and cold dark matter models
• Cosmological Model Tests with JWST
• Measuring the reionization optical depth without large-scale CMB polarization
• Transition dynamics in the ${\Lambda }_{\mathrm{s}}$CDM model: Implications for bound cosmic structures
• Compatibility of JWST results with exotic halos
• Can primordial black holes explain the overabundance of bright super-early galaxies?
• Modelling the star-formation activity and ionizing properties of high-redshift galaxies
• Enhanced Early Galaxy Formation in JWST from Axion Dark Matter?
• Beyond the first galaxies primordial black holes shine
• Fundamental Physics and Cosmology with TianQin
• Spherical Collapse Approach for Non-standard Dark Matter Models and Enhanced Early Galaxy Formation in JWST
• Primordial Black-Hole-Based Pathways to Little Red Dots
• Nonassicative cosmological solitonic R-flux deformations in gauge gravity and G. Perelman geometric flow thermodynamics
• Investigating cosmic strings using large-volume hydrodynamical simulations in the context of JWST's massive UV-bright galaxies
• Non-Gaussianities and Primordial Black Holes
• Nonmetric geometric flows and quasicrystalline topological phases for dark energy and dark matter in $f(Q)$ cosmology
• Can an Anti-de Sitter Vacuum in the Dark Energy Sector Explain JWST High-Redshift Galaxy and Reionization Observations?
• Dark energy, spatial curvature, and star formation efficiency from JWST photometric and spectroscopic high-redshift galaxies
• Dark Secrets of Baryons: Illuminating Dark Matter-Baryon Interactions with JWST