paper

Primordial Black Holes with QCD Color Charge

arXiv:2310.16877 · doi:10.1103/PhysRevLett.132.231402

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.

9 pages, 1 figure, plus Supplemental Material section. Minor edits to match published version, forthcoming in Physical Review Letters

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