Year: 2025
Type: preprint
Abstract: Additional elementary species and primordial black holes are common candidates for dark matter. Their co-existence in the early Universe leads to accretion if particles are heavy. We solve equation of motion affected by expansion which enhances black hole growth rates. They depend upon particles freeze-out time rather than their mass. Taking into account friction we investigate recently suggested baryogenesis mechanism operating via scattering cross-section difference between particles and antiparticles on relativistic symmetric plasma. We find that asymmetry is accumulated at relatively small times which can be used to construct viable particle models.
Source: arXiv (Cornell University)
Author: Pozdnyakov, N. A.
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6979324789
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