Isotropisation of flat homogeneous Bianchi type I model with a non minimally coupled and massive scalar field

Details Isotropisation of flat homogeneous Bianchi type I model with a non minimally coupled and massive scalar field Isotropisation of flat homogeneous Bianchi type I model with a non minimally coupled and massive scalar field

2005-09-16

arxiv.org/abs/gr-qc/0509070v1

Gen.Rel.Grav.37:1233-1253,2005

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

32 pages, 9 figures (low resolution)

Scientific paper

10.1007/s10714-005-0107-y

In previous works, we studied the isotropisation of Bianchi class A models with a minimally coupled scalar field. In this paper, we extend these results to the case of a non minimally coupled one. We first make the calculations in the Einstein frame where the scalar field is minimally coupled to the curvature but non minimally coupled to the perfect fluid. Then, we use a conformal transformation to generalise our results to a scalar field non minimally coupled to the curvature. Universe isotropisation for the Brans-Dicke and low energy string theories are studied.

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