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 that survived up to the present times acquire an abnormally high metallicity. This conclusion holds in a 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.

Special Issue: Symmetry beyond the Standard Models of Cosmology, High Energy Physics and Quantum Field Theory

“…Some hypothetical hot regions that may be formed by primordial density inhomogeneities could be a source of primordial nucleosynthesis; such a process is studied in reference [9]. It is shown that regions that have survived up to the present time acquire an abnormally high metallicity.…”