49 citations · 130 across the 3 of their papers we have counts for
3 papers
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…
Catastrogenesis: DM, GWs, and PBHs from ALP string-wall networks
Graciela B. Gelmini, Anna Simpson, Edoardo Vitagliano
Axion-like particles (ALPs), a compelling candidate for dark matter (DM), are the pseudo Nambu-Goldstone bosons of a spontaneously and explicitly broken global symmetry. Whe…
Gravitational waves from axion-like particle cosmic string-wall networks
Graciela B. Gelmini, Anna Simpson, Edoardo Vitagliano
Axion-like particles (ALPs) are a compelling candidate for dark matter (DM), whose production is associated with the formation of a string-wall network. If walls bounded by strings…