A Simple Cosmological Model with Decreasing Light Speed

TL;DR

This paper proposes a flat Universe model with a decreasing speed of light over time, explaining cosmic phenomena without dark energy or inflation, and resolving key cosmological problems.

Contribution

It introduces a simple cosmological model where the speed of light decreases with time, providing alternative explanations for observations traditionally attributed to dark energy.

Findings

Explains distant SNeIa faintness without dark energy.

Provides new relationships for redshift and background radiation.

Addresses horizon, flatness, and other cosmological problems without inflation.

Abstract

An alternative model describing the dynamics of a flat Universe without cosmological constant and allowing a gradual change of c with time is proposed. New relationships of redshift vs. distance and cosmic background radiation temperature are given. Values for the Universal radius, matter density, Hubble parameter, light deceleration, cosmic age and recombination time are obtained. Distant SNeIa faintness is explained within this decelerating, matter-dominated Universe without invoking dark energy. Horizon, flatness and other problems of standard Big Bang cosmology are solved without the need of inflation. The top speed of any signal, force, particle or wave at any time is limited by the expansion speed of the Universe itself.