Black Hole Production of Monopoles in the Early Universe

Abstract

In the early universe, evaporating black holes heat up the surrounding plasma and create a temperature profile around the black hole that can be more important than the black hole itself. As an example, we demonstrate how the hot plasma surrounding evaporating black holes can efficiently produce monopoles via the Kibble-Zurek mechanism. In the case where black holes reheat the universe, reheat temperatures above $\sim 500$ GeV can already lead to monopoles overclosing the universe.

arXiv comment22 pages, 2 figures

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• Formation of hot spots around small primordial black holes
• Cascades of high-energy SM particles in the primordial thermal plasma
• Stability and Observability of Magnetic Primordial Black Hole-Neutron Star Collisions
• The Boring Monopole