Phase transition catalyzed by primordial black holes
Cosmology and Nongalactic Astrophysics
2024-08-08 v3 General Relativity and Quantum Cosmology
Abstract
We investigate the first-order phase transition catalyzed by primordial black holes~(PBHs) in the early Universe. We find that super-horizon curvature perturbations generated in this scenario lead to the production of gravitational waves when the scalar modes re-enter the horizon. If PBHs with masses about constitute all dark matter, the first-order electroweak phase transition catalyzed by PBHs can explain the gravitational wave signal observed by pulsar timing array collaborations without the overproduction of PBHs.
Keywords
Cite
@article{arxiv.2402.09310,
title = {Phase transition catalyzed by primordial black holes},
author = {Zhen-Min Zeng and Zong-Kuan Guo},
journal= {arXiv preprint arXiv:2402.09310},
year = {2024}
}
Comments
6 pages,3 figures