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arXiv · 1709.04016

On the emergence of the ${\bfΛ}$CDM model from self-interacting Brans-Dicke theory in ${\bf d= 5}$

Luz Marina Reyes·Santiago Esteban Perez Bergliaffa
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Abstract

We investigate whether a self-interacting Brans-Dicke theory in $d=5$ without matter and with a time-dependent metric can describe, after dimensional reduction to $d=4$, the FLRW model with accelerated expansion and non-relativistic matter. By rewriting the effective 4-dimensional theory as an autonomous three-dimensional dynamical system and studying its critical points, we show that the $Λ$CDM cosmology cannot emerge from such a model. This result suggests that a richer structure in $d=5$ may be needed to obtain the accelerated expansion as well as the matter content of the 4-dimensional universe.

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Luz Marina Reyes, Santiago Esteban Perez Bergliaffa. 2017-09-12. On the emergence of the ${\bfΛ}$CDM model from self-interacting Brans-Dicke theory in ${\bf d= 5}$. https://doi.org/10.1140/epjc%2Fs10052-017-5497-y

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