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arXiv:2310.16877hep-ph

Primordial Black Holes with QCD Color Charge

Elba Alonso-Monsalve, David I. Kaiser

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Abstract

We describe a realistic mechanism whereby black holes with significant QCD color charge could have formed during the early universe. Primordial black holes (PBHs) could make up a significant fraction of the dark matter if they formed well before the QCD confinement transition. Such PBHs would form by absorbing unconfined quarks and gluons, and hence could acquire a net color charge. We estimate the number of PBHs per Hubble volume with near-extremal color charge for various scenarios, and discuss possible phenomenological implications.

arXiv comments
9 pages, 1 figure, plus Supplemental Material section. Minor edits to match published version, forthcoming in Physical Review Letters
Journal reference
Physical Review Letters vol. 132, 231402 (2024)
DOI
doi:10.1103/PhysRevLett.132.231402
Subjects
hep-phHigh Energy Physics, Phenomenology astro-ph.COCosmology and Nongalactic Astrophysics gr-qcGeneral Relativity and Quantum Cosmology hep-thHigh Energy Physics, Theory

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