General relativity, early galaxy formation and the JWST observations

TL;DR

This paper proposes a standard cosmological explanation for the early formation of massive galaxies observed by JWST, emphasizing the role of peculiar velocities within general relativity without new physics.

Contribution

It offers a novel explanation for early galaxy formation based on known physics, specifically highlighting the impact of peculiar velocities.

Findings

Peculiar velocities significantly influence early galaxy formation.

Standard cosmology can explain JWST observations without new physics.

The model aligns with observed galaxy masses at high redshifts.

Abstract

The James Webb Space Telescope has recently detected massive, fully formed, galaxies at redshifts corresponding to few hundred million years after the Big-Bang. However, our current cosmological model cannot produce such massive systems so early in the lifetime of the universe. A number of theoretical solutions have been proposed, but they all appeal to exotic new physics and introduce rather excessive fine-tuning. In this essay, we outline a theoretical answer to the early galaxy-formation question, which operates within standard general relativity and standard cosmology, without appealing to any new physics. Instead, we account for the effect of a well established feature of our universe. This feature, which has so far been kept in the margins of mainstream cosmology, are the peculiar velocities.