36 citations · 54 across the 2 of their papers we have counts for
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hep-ph2023★ 18 cited
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…
hep-ph2023★ 36 cited
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…