Cosmology and a general scalar-tensor theory of gravity

Details Cosmology and a general scalar-tensor theory of gravity Cosmology and a general scalar-tensor theory of gravity

Aug 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976mnras.176..241b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 176, Aug. 1976, p. 241-247.

Physics

8

Astronomical Models, Cosmology, Gravitation Theory, Scalars, Tensor Analysis, Field Theory (Physics), Gravitational Constant, Gravitational Fields, Relativity

Scientific paper

A generalization of the Brans-Dicke (1961) scalar-tensor theory of gravity is outlined which allows the scalar coupling parameter to vary. The resulting homogeneous isotropic pressure-free cosmological models are discussed along with observational constraints on them. Special attention is given to models in which the scalar field varies as some power of the cosmological expansion factor, including a set in which the scalar coupling parameter is negative. It is noted that these models are similar to Newtonian models obtained from an impotence principle.

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