Dynamics of a Generalized Cosmological Scalar-Tensor Theory

Details Dynamics of a Generalized Cosmological Scalar-Tensor Theory Dynamics of a Generalized Cosmological Scalar-Tensor Theory

2002-08-22

arxiv.org/abs/gr-qc/0208065v1

Int.J.Mod.Phys. D11 (2002) 669-684

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages

Scientific paper

10.1142/S0218271802001901

A generalized scalar-tensor theory is investigated whose cosmological term depends on both a scalar field and its time derivative. A correspondence with solutions of five-dimensional Space-Time-Matter theory is noted. Analytic solutions are found for the scale factor, scalar field and cosmological term. Models with free parameters of order unity are consistent with recent observational data and could be relevant to both the dark-matter and cosmological-"constant" problems.

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