Lunar Mass Black Holes from QCD Axion Cosmology
Jun 12, 2017Citations per year
Abstract: (arXiv)
In the QCD axion scenario, a network of domain walls bounded by cosmic strings fragments into pieces. As these fragments collapse, some of them will form black holes. With standard QCD axion parameters, the black holes will have lunar masses (). Even though their number density is difficult to estimate, arguments suggest that they can constitute a reasonable fraction of the critical cosmological density.Note:
- 5 pages; 3 figures. Newer axion string simulations indicate fewer black holes in QCD axion cosmology. Black hole formation may still be of interest in variants of the QCD axion scenario
- quantum chromodynamics: axion
- black hole: mass
- domain wall: network
- density
- lunar
- cosmological model
- cosmic string
- collapse
- black hole: primordial
- symmetry: Peccei-Quinn
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