A model of eternal accelerated expansion without particle horizon

TL;DR

This paper presents a cosmological model based on the emergence of space that naturally avoids the horizon and flatness problems, addressing early universe inflation issues without requiring traditional inflationary mechanisms.

Contribution

It introduces a novel emergent space model that resolves horizon and flatness problems without early universe inflation.

Findings

Model avoids horizon and flatness problems

Vacuum energy evaluated from Hubble constant and universe age

Addresses early universe inflation issues

Abstract

In our previous paper \cite{8}, we proposed a cosmological model from the emergence of space, which possesses a significant character of evaluating the vacuum energy from the Hubble constant and the age of universe. And one problem of this model is that there is no inflation in the early universe. In this paper, we aim at resolving this problem which leads us to a rather surprising conclusion that our cosmological model can avoid the horizon and flatness problems.