Effects of a torsion field on Big Bang nucleosynthesis

Details Effects of a torsion field on Big Bang nucleosynthesis Effects of a torsion field on Big Bang nucleosynthesis

1999-06-25

arxiv.org/abs/astro-ph/9906403v1

Gen.Rel.Grav. 31 (1999) 1935-1939

Astronomy and Astrophysics

Astrophysics

accepted by General Relativity and Gravitation

Scientific paper

In this paper it is investigated whether torsion, which arises naturally in most theories of quantum gravity, has observable implications for the Big Bang nucleosynthesis. Torsion can lead to spin flips amongst neutrinos thus turning them into sterile neutrinos. In the early Universe they can alter the helium abundance which is tightly constrained by observations. Here I calculate to what extent torsion of the string theory type leads to a disagreement with the Big Bang nucleosynthesis predictions.

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