Cosmology in Brans-Dicke theory with a scalar potential

Details Cosmology in Brans-Dicke theory with a scalar potential Cosmology in Brans-Dicke theory with a scalar potential

1996-11-27

arxiv.org/abs/gr-qc/9611065v1

Annals Phys. 258 (1997) 111-134

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

28 pages harvmac, 7 figures

Scientific paper

10.1006/aphy.1997.5691

We consider the general behaviour of cosmologies in Brans-Dicke theory where the dilaton is self-interacting via a potential $V(\Phi)$. We show that the general radiation universe is a two-dimensional dynamical system whereas the dust or false vacuum universe is three-dimensional. This is in contrast to the non-interacting dilaton which has uniformly a two-dimensional phase space. We find the phase spaces in each case and the general behaviour of the cosmologies.

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