Hot primordial regions with anomalous hydrogenless chemical composition

Abstract

We study primordial nucleosynthesis in hypothetical hot regions that could be formed by the primordial density inhomogeneities. It is shown that the regions survived up to the present times acquire an abnormally high metallicity. This conclusion holds in wide range of initial parameters of such regions. We considered the thermonuclear reaction rates and estimated abundances of deuterium and helium-3 and -4 inside these areas. It has been established that all baryons tend to form helium-4, which is the thermonuclear link in the chain of formation of heavier elements.

arXiv comment12 pages, 6 figures,1 table. v2: Version accepted for publication Symmetry

References in corpus (23)

• Primordial Black Holes as Dark Matter: The Power Spectrum and Evaporation of Early Structures
• The Formation of Primary Galactic Nuclei during Phase Transitions in the Early Universe
• Clusters of primordial black holes
• Primordial Black Holes as Dark Matter Candidates
• Primordial Structure of Massive Black Hole Clusters
• Early Structure Formation in $\Lambda$PBH Cosmologies
• The Clustering Evolution of Primordial Black Holes
• Primordial Black Hole Dark Matter and the LIGO/Virgo observations
• Possible Origin of Antimatter Regions in the Baryon Dominated Universe
• Initial clustering and the primordial black hole merger rate
• Massive and supermassive black holes in the contemporary and early universe and the new problems of cosmology and astrophysics
• Early formation of galaxies initiated by clusters of primordial black holes
• Detectability of Gravitational Waves from the Coalescence of Massive Primordial Black Holes with Initial Clustering
• Clustering of primordial black holes formed in a matter-dominated epoch
• CMB spectral distortions from black holes formed by vacuum bubbles
• Physical Origin, Evolution and Observational Signature of Diffused Antiworld
• A Planetary Microlensing Event with an Unusually Red Source Star: MOA-2011-BLG-291
• Electromagnetic probes of primordial black holes as dark matter
• Connecting the Extremes: A Story of Supermassive Black Holes and Ultralight Dark Matter
• Strong clustering of primordial black holes from Affleck-Dine mechanism
• Propagation of the burst of radiation in expanding and recombining Universe: Thomson scattering
• Neutrino Cooling of Primordial Hot Regions
• Neutrino cooling effect of primordial hot areas in dependence on its size

Cited by in corpus (1)

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