no code implementations • 2 Dec 2019 • Camila S. Machado, Wolfram Ratzinger, Pedro Schwaller, Ben A. Stefanek
We have recently shown that axions and axion-like particles (ALPs) may emit an observable stochastic gravitational wave (GW) background when they begin to oscillate in the early universe.
High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics
