Nucleosynthesis bounds on scalar-tensor gravity: power-law couplings

Details Nucleosynthesis bounds on scalar-tensor gravity: power-law couplings Nucleosynthesis bounds on scalar-tensor gravity: power-law couplings

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phlb..359..249t&link_type=abstract

Physics Letters B, v. 359, p. 249-253

Physics

23

Elsevier: Nucleosynthesis, Cosmology, Scalar-Tensor Gravity

Scientific paper

A simple model of variation of primordial helium production is used to fix bounds for the exponent of power-law type of couplings (ω(φ) ~ φα) in scalar-tensor theories of gravitation. It is found that α >= 4 is compatible with the observed abundance. This lower limit is obtained for k = 0 models and for a constant Ωoh2 = 1 and varies for others values of this quantity.

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