Effects of Anisotropy and Dissipation on the Primordial Light-Isotope Abundances

Details Effects of Anisotropy and Dissipation on the Primordial Light-Isotope Abundances Effects of Anisotropy and Dissipation on the Primordial Light-Isotope Abundances

May 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982phrvl..48.1565r&link_type=abstract

Physical Review Letters, Volume 48, Issue 22, May 31, 1982, pp.1565-1568

Physics

12

Origin, Formation, And Abundances Of The Elements, Origin And Formation Of The Universe

Scientific paper

Account is taken of the dissipation of anisotropy due to neutrino viscosity and nearly collisionless radiation in a Bianchi type-I cosmology during primordial nucleosynthesis. For experimentally allowed cross sections, and for moderate anisotropy, the final 4He mass fraction is significantly less than in the standard model, while the D fraction increases much less than would be expected in a low-helium isotropic cosmology.

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