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Cosmology in Brans-Dicke theory with a scalar potential

Caroline Santos·Ruth Gregory
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Abstract

We consider the general behaviour of cosmologies in Brans-Dicke theory where the dilaton is self-interacting via a potential $V(Φ)$. 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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Caroline Santos, Ruth Gregory. 1996-11-27. Cosmology in Brans-Dicke theory with a scalar potential. https://doi.org/10.1006/aphy.1997.5691

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