The Fully Quantized Axion and Dark Energy

TL;DR

This paper discusses the evolution of the axion effective potential and its potential role as Dark Energy, highlighting how a flat potential can produce vacuum energy consistent with cosmological observations.

Contribution

It introduces an exact evolution equation for the axion effective potential and explores its implications for Dark Energy, providing a novel perspective on axion cosmology.

Findings

Flat axion effective potential can account for Dark Energy

The evolution equation offers a new tool for axion potential analysis

Comparison with other models shows consistency with observations

Abstract

This letter reviews the exact evolution equation for the axion effective potential with the axion scale factor f and phenomenological consequences of the flat effective potential solution are discussed. It is shown that the corresponding vacuum energy can be consistent with Dark Energy, and we compare this result to other studies relating the axion and Dark Energy.