36 citations · 54 across the 2 of their papers we have counts for
4 papers · 1 filter
Observable gravitational waves from unstable ALP catastrogenesis
Graciela B. Gelmini, Jonah Hyman, Yu Watanabe
We focus on gravitational waves (GWs) observable in pulsar timing array and interferometric searches that are produced by the annihilation of cosmic string-wall networks in axion-l…
Gravitational Wave Detection With Plasma Haloscopes
Rodolfo Capdevilla, Graciela B. Gelmini, Jonah Hyman +2
Searches for high frequency gravitational waves using cavities based on the Gertsenshtein effect were recently proposed, building off existing axion dark matter experiments. In par…
Catastrogenesis with unstable ALPs as the origin of the NANOGrav 15 yr gravitational wave signal
Graciela B. Gelmini, Jonah Hyman
In post-inflation axion-like particle (ALP) models, a stable domain wall network forms if the model's potential has multiple minima. This system must annihilate before dominating t…
Primordial black hole dark matter from catastrogenesis with unstable pseudo-Goldstone bosons
Graciela B. Gelmini, Jonah Hyman, Anna Simpson +1
We propose a new scenario for the formation of asteroid-mass primordial black holes (PBHs). Our mechanism is based on the annihilation of the string-wall network associated with th…