Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...330..545d&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 330, July 15, 1988, p. 545-568.
Astronomy and Astrophysics
Astrophysics
139
Baryons, Cosmology, Nuclear Fusion, Universe, Abundance, Deuterium, Gravitinos, Hadrons, Helium Isotopes, Lithium Isotopes
Scientific paper
The synthesis and destruction of light elements in the keV era of the hot big bang via hadronic and electromagnetic showers induced by decays of heavy particles are analyzed. Primordial abundances of D, He-3, He-4, Li-6, and Li-7 are found for Omega(B) h(0)2 equal to or less than unity, a result in agreement with observations. It is shown that cosmologies with Omega(B) between 0.03 and 1.1 are consistent with primordial nucleosynthesis if there is a particle with given parameters. How these parameters might arise is discussed. A scheme in which nucleosynthesis occurs in two stages, a conventional era at T of about 30-100 K and a new era at keV temperatures, is described. The results, however, do not depend on there ever having been a conventional era. An alternative hot big bang cosmology containing a keV era of unconventional synthesis and destruction of light elements is proposed.
Dimopoulos Savas
Esmailzadeh Rahim
Hall Lawrence J.
Starkman Glenn D.
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