On the emergence of the $$\mathbf{\Lambda }$$ Λ CDM model from self-interacting Brans–Dicke theory in $$\mathbf{d= 5}$$ d=5
| Autor: | Luz Marina Reyes, Santiago Esteban Perez Bergliaffa |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | European Physical Journal C: Particles and Fields, Vol 78, Iss 1, Pp 1-7 (2018) |
| Druh dokumentu: | article |
| ISSN: | 1434-6044 1434-6052 |
| DOI: | 10.1140/epjc/s10052-017-5497-y |
| Popis: | Abstract We investigate whether a self-interacting Brans–Dicke theory in $$d=5$$ d=5 without matter and with a time-dependent metric can describe, after dimensional reduction to $$d=4$$ d=4 , the FLRW model with accelerated expansion and non-relativistic matter. By rewriting the effective 4-dimensional theory as an autonomous 3-dimensional dynamical system and studying its critical points, we show that the $$\varLambda $$ Λ CDM cosmology cannot emerge from such a model. This result suggests that a richer structure in $$d=5$$ d=5 may be needed to obtain the accelerated expansion as well as the matter content of the 4-dimensional universe. |
| Databáze: | Directory of Open Access Journals |
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