Galaxy Formation in the Early Universe

TL;DR

This paper investigates how Modified Gravity (MOG) can explain the rapid formation of early universe galaxies observed by JWST, offering an alternative to the standard LCDM model by enhancing gravitational effects.

Contribution

It demonstrates that MOG, with its increased gravitational constant and vector field, can account for early galaxy formation, challenging the predictions of LCDM.

Findings

MOG predicts deeper gravitational wells facilitating early galaxy formation.

Theoretical models show increased star formation rates under MOG.

MOG aligns with JWST observations of high-redshift galaxies.

Abstract

Recent observations by the James Webb Space Telescope (JWST) have revealed the presence of bright and well-formed galaxies at high redshifts, challenging the predictions of the standard Lambda-Cold Dark Matter (LCDM) cosmological model. This paper explores the potential of Modified Gravity (MOG), specifically Scalar-Tensor-Vector Gravity (STVG), to account for the rapid formation of these galaxies in the early universe. By enhancing the gravitational constant through a dimensionless parameter $\alpha$ and incorporating a massive vector field $\phi_\mu$, MOG predicts deeper gravitational wells that can accelerate the collapse of baryonic matter. We present theoretical insights demonstrating how MOG can facilitate the increase in star formation rate and early formation of galaxies, offering a compelling alternative to LCDM. Our findings suggest that MOG provides a viable framework for understanding the rapid growth of galaxies observed by JWST.