Gravitational waves from axion wave production
High Energy Physics - Phenomenology
2024-04-09 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Abstract
We consider a scenario with axions/axion-like particles Chern-Simons gravity coupling, such that gravitational waves can be produced directly from axion wave parametric resonance in the early universe after inflation. This axion gravity term is less constrained compared to the well-searched axion photon coupling and can provide a direct and efficient production channel for gravitational waves. Such stochastic gravitational waves can be detected by either space/ground-based gravitational wave detectors or pulsar timing arrays for a broad range of axion masses and decay constants.
Cite
@article{arxiv.2309.08407,
title = {Gravitational waves from axion wave production},
author = {Mingqiu Li and Sichun Sun and Qi-Shu Yan and Zhijie Zhao},
journal= {arXiv preprint arXiv:2309.08407},
year = {2024}
}
Comments
20 pages, 6 figures