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High-redshift JWST Observations and Primordial Non-Gaussianity

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arxiv 2210.04812 v2 pith:MG5B5FEH submitted 2022-10-10 astro-ph.CO gr-qc

classification astro-ph.COgr-qc
keywords massivecandidatesgalaxynon-gaussianityobservedprimordialbeenbright
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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.

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Forward citations

Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Early Galaxies from Rare Inflationary Processes and JWST Observations

    astro-ph.CO 2025-02 conditional novelty 6.0 of 10

    Rare Poisson processes during inflation can seed dense regions that collapse into massive galaxies at redshifts where standard cosmology predicts almost none, and JWST could detect them.

  2. Probing inflationary features with galaxy ultraviolet luminosity function observables

    astro-ph.CO 2026-02 conditional novelty 5.0 of 10

    Galaxy UV luminosity function data at z=6–9 give upper limits on bump-like inflationary features at k≈0.3–20 Mpc^-1, similar to but not stronger than optical-depth constraints.

  3. Dark Secrets of Baryons: Illuminating Dark Matter-Baryon Interactions with JWST

    hep-ph 2025-11 conditional novelty 5.0 of 10

    JWST ultraviolet luminosity function data currently provide the strongest upper limits on velocity-dependent (∝v^{-2}) dark matter–proton scattering for sub-GeV dark matter.

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