Primordial Black Holes with QCD Color Charge
Researchers propose a mechanism for primordial black holes with QCD color charge, potentially part of dark matter. Study by Alonso-Monsalve and Kaiser explores observational implications, shedding light on early Universe understanding.
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Researchers have proposed a mechanism for the formation of primordial black holes (PBHs) with significant QCD color charge in the early Universe. These PBHs could potentially constitute a portion of dark matter if they originated before the QCD confinement transition. By absorbing unconfined quarks and gluons, PBHs could acquire a net color charge. The study estimates the number of PBHs per Hubble volume with near-extremal color charge under various scenarios and discusses potential observational implications. Some ultralight black holes that emerged shortly after the big bang may have possessed exotic properties with a net "color charge," leaving detectable traces. The work was conducted by Elba Alonso-Monsalve and David I. Kaiser from the Department of Physics at the Massachusetts Institute of Technology. This research, published in Physical Review Letters, sheds light on the formation of colorful primordial black holes and their potential significance in understanding the early Universe.
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