General relativity as a cosmological attractor of tensor-scalar theories

Details General relativity as a cosmological attractor of tensor-scalar theories General relativity as a cosmological attractor of tensor-scalar theories

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phrvl..70.2217d&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 70, no. 15, p. 2217-2219.

Physics

252

Cosmology, Gravitation Theory, Red Shift, Relativistic Theory, Scalars, Tensor Analysis, Attraction, Gravitational Effects, Solar System, Stress Tensors

Scientific paper

Tensor-scalar theories of gravity are shown to generically contain an attractor mechanism toward general relativity, with the redshift at the beginning of the matter-dominated era providing the measure for the present level of deviation from general relativity. Quantitative estimates for the post-Newtonian parameters gamma - 1, beta - 1, and G-dot/G are given, which give greater significance to future improvements of solar-system gravitational tests.

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