Mathematics – Logic
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phrvd..47.4244d&link_type=abstract
Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 47, Issue 10, 15 May 1993, pp.4244-4255
Mathematics
Logic
69
Background Radiations, Dark Matter
Scientific paper
A model of baryogenesis is described which gives rise to fluctuations in baryon number that are large on small scales but of low amplitude on large scales. This provides a mechanism for primordial black-hole formation, and allows the possibility of a critical density of dark matter in baryonic (and antibaryonic) form. Since high-density regions naturally possess both signs of baryonic excess, our model also predicts a small fraction of the mass density of the Universe to be in the form of compact antibaryonic regions. These objects may be observable via a redshifted annihilation feature in the diffuse extragalactic γ-ray background, as both steady sources of γ-ray radiation and annihilation-powered γ-ray bursters at cosmological distances, by a distortion of the spectrum of the 3K background radiation, or by the presence of antihelium nuclei as a rare component of high-energy cosmic rays.
Dolgov Alexandre
Silk Joseph
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