Scale Invariant Cosmology

TL;DR

This paper explores a scale-invariant approach to gravitation that applies to all physical scales, offering new insights into cosmological models, eliminating the horizon problem, and removing the need for inflation.

Contribution

It extends scale invariance to the microscopic domain in cosmology, challenging standard models and providing alternative explanations for redshift and horizon issues.

Findings

Redshift can be explained without inflation.

No horizon problem arises in this framework.

Strong restrictions on existing cosmological models are identified.

Abstract

An attempt is made here to extend to the microscopic domain the scale invariant character of gravitation - which amounts to consider expansion as applying to any physical scale. Surprisingly, this hypothesis does not prevent the redshift from being obtained. It leads to strong restrictions concerning the choice between the presently available cosmological models and to new considerations about the notion of time. Moreover, there is no horizon problem and resorting to inflation is not necessary.