The amount of matter in a matter-antimatter model of the universe

Details The amount of matter in a matter-antimatter model of the universe The amount of matter in a matter-antimatter model of the universe

Oct 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974a%26a....35..271a&link_type=abstract

Astronomy and Astrophysics, vol. 35, no. 2, Oct. 1974, p. 271-281.

Physics

14

Annihilation Reactions, Antimatter, Astronomical Models, Cosmology, Helium, Nuclear Fusion, Diffusion Theory, Matter (Physics), Neutron Distribution, Neutron Physics, Universe

Scientific paper

The calculation of the amount of matter in a matter-antimatter symmetric universe is reconsidered, assuming some symmetry breaking due to a phase separation of matter from antimatter at high temperatures. The original calculation by Omnes has been subjected to two main criticisms: Zeldovich (1970) has called attention to the importance of initial correlations, while Steigman (1973) has pointed out the determinant role of neutron diffusion in annihilation. These two effects and several others are included here and further analyzed. It turns out that the final amount of matter that is found is lower than observed in a perfectly quiet universe, as noticed by Zeldovich.

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