NUCLEOSYNTHESIS BOUNDS ON JORDAN-BRANS-DICKE THEORIES OF GRAVITY
- 20 February 1992
- journal article
- Published by World Scientific Pub Co Pte Ltd in Modern Physics Letters A
- Vol. 7 (5) , 447-456
- https://doi.org/10.1142/s0217732392000409
Abstract
We reexamine the nucleosynthesis predictions for the simplest class of scalar-tensor theories of gravity, the Jordan-Brans-Dicke theory. Comparison with present observational data on light elements’ abundances provides bounds on the ω-parameter which are as strong as the post-Newtonian ones, or even stronger, depending on the value of Ωh2. Future improvements in the determination of the 4 He and D +3He abundances will increase this bound dramatically. We argue that a future (hypothetical) experimental deviation from general relativity prediction could be restored by a Jordan-Brans-Dicke theory.Keywords
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