43 citations · 196 across the 14 of their papers we have counts for
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hep-ph2023★ 2 cited
Evaporating Kerr black holes as probes of new physics
Marco Calzà, João G. Rosa
In the string axiverse scenario, primordial black holes (PBHs) can sustain non-negligible spin parameters as they evaporate. We show that tracking both the mass and spin evolution…
hep-ph2023★ 2 cited
Primordial black hole superradiance and evaporation in the string axiverse
Marco Calzà, João G. Rosa, Filipe Serrano
In the string axiverse scenario, light primordial black holes may spin up due to the Hawking emission of a large number of light (sub-MeV) axions. We show that this may trigger sup…