Bianchi V inflation in the Brans-Dicke theory?

Details Bianchi V inflation in the Brans-Dicke theory? Bianchi V inflation in the Brans-Dicke theory?

1999-12-10

arxiv.org/abs/gr-qc/9912047v1

Class.Quant.Grav.16:3903-3922,1999

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

28 pages, 6 figuras

Scientific paper

10.1088/0264-9381/16/12/309

It is shown some exact solutions in the Brans-Dicke (BD) theory for a Bianchi V metric having the property of inflationary expansion, graceful exit, and asymptotic evolution to a Friedmann-Robertson-Walker (FRW) open model. It is remarkable that an inflationary behaviour can occur, even without a cosmological potential or constant. However, the horizon and flatness problems cannot be solve within the standard BD theory because the inflationary period is severely restricted by the value of the BD parameter $\omega$.

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