English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We investigate whether a self-interacting Brans-Dicke theory in $d=5$ withoutmatter and with a time-dependent metric can describe, after dimensionalreduction to $d=4$, the FLRW model with accelerated expansion andnon-relativistic matter. By rewriting the effective 4-dimensional theory as anautonomous three-dimensional dynamical system and studying its critical points,we show that the $\Lambda$CDM cosmology cannot emerge from such a model. Thisresult suggests that a richer structure in $d=5$ may be needed to obtain theaccelerated expansion as well as the matter content of the 4-dimensionaluniverse.

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