A Non-Inflationary Axion and ALP Misalignment Mechanism
High Energy Physics - Phenomenology
2025-07-02 v1 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
Based on considerations of quantum gravity, global symmetries which lead to axions as pseudo Nambu-Goldstone bosons after low scale symmetry breaking cannot be exact at the Planck scale. Here, we show that Planck-suppressed terms which yield this symmetry breaking may provide a non-inflationary misalignment mechanism which can generate coherent oscillations of the axion and axion-like particle (ALP) fields at low temperatures.
Cite
@article{arxiv.2507.00785,
title = {A Non-Inflationary Axion and ALP Misalignment Mechanism},
author = {Robert Brandenberger},
journal= {arXiv preprint arXiv:2507.00785},
year = {2025}
}
Comments
4 pages