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Inflationary phase in Generalized Brans-Dicke theory

Marcelo S. Berman·Luis A. Trevisan
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Abstract

We find a solution for exponential inflation in a Brans-Dicke generalized model, where the coupling "constant " is variable. While in General Relativity the equation of state is p is equal to minus rho, here we find p proportional to rho, where the proportionality constant is smaller than -2/3. The negativity of cosmic pressure implies acceleration of the expansion, even with lambda < 0 >.

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Marcelo S. Berman, Luis A. Trevisan. 2009-04-21. Inflationary phase in Generalized Brans-Dicke theory. https://doi.org/10.1007/s10773-009-9965-5

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