Isotropisation of Generalized Scalar-Tensor theory plus a massive scalar field in the Bianchi type I model

Details Isotropisation of Generalized Scalar-Tensor theory plus a massive scalar field in the Bianchi type I model Isotropisation of Generalized Scalar-Tensor theory plus a massive scalar field in the Bianchi type I model

2003-09-19

arxiv.org/abs/gr-qc/0309094v1

Class.Quant.Grav. 18 (2001) 2887-2894

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages

Scientific paper

10.1088/0264-9381/18/15/304

In this paper we study the isotropisation of a Generalized Scalar-Tensor theory with a massive scalar field. We find it depends on a condition on the Brans-Dicke coupling function and the potential and show that asymptotically the metric functions always tend toward a power or exponential law of the proper time. These results generalise and unify these of De Sitter in the case of a cosmological constant and of Cooley and Kitada in the case of an exponential potential.

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