Statistics – Computation
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...358...36m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 358, July 20, 1990, p. 36-46. Research supported by the Lawrence Livermore
Statistics
Computation
76
Abundance, Baryons, Nuclear Fusion, Particle Diffusion, Universe, Big Bang Cosmology, Computational Astrophysics, Elementary Particles
Scientific paper
Calculations of primordial nucleosynthesis in baryon-number inhomogeneous big bang models are reported. Nucleosynthesis yields are presented as a function of Omega (b) for a range of parameters which characterize the amplitude, shape, and mean separation of isothermal baryon-number fluctuations assumed to arise from an earlier epoch. The modification of these fluctuations due to neutron and proton diffusion before, during, and after nucleosynthesis are followed, using a multizone computer code which couples the diffusion equation with the nuclear reaction network and the universal expansion. The resulting abundance yields are strongly dependent upon the parameters characterizing the fluctuations; however, there exists a range of these parameters in which the calculated light-element abundances are in agreement with observational constraints for considerably higher values of Omega (b) than that allowed by the standard homogeneous big bang.
Alcock Charles R.
Fuller George M.
Mathews Grant J.
Meyer Bradley S.
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