Modified Gravity: Cosmology without dark matter or Einstein's cosmological constant

TL;DR

Modified Gravity (MOG) offers an alternative cosmological model that fits key observational data without dark matter or a cosmological constant, predicting a bouncing universe with acceleration and an age of about 13 billion years.

Contribution

This paper demonstrates that MOG can successfully explain cosmological observations with fewer parameters than standard models, challenging the necessity of dark matter and dark energy.

Findings

MOG fits CMB, galaxy power spectrum, and supernova data well

Predicts a bouncing cosmology with accelerating expansion

Yields an age of approximately 13 billion years

Abstract

We explore the cosmological consequences of Modified Gravity (MOG), and find that it provides, using a minimal number of parameters, good fits to data, including CMB temperature anisotropy, galaxy power spectrum, and supernova luminosity-distance observations without exotic dark matter. MOG predicts a bouncing cosmology with a vacuum energy term that yields accelerating expansion and an age of ~13 billion years.