MG13 - Talk detail |
Participant |
Alexeyev, Stanislav | |||||||
Institution |
Sternberg Astronomical Institute - Universitetsky Prospekt, 13 - Moscow - Moscow - Russia | |||||||
Session |
CM3 |
Accepted |
Yes |
Order |
7 |
Time |
16:50 - 17:10 | |
Talk |
Oral abstract |
Title |
Brans-Dicke-$\Lambda$ Cosmology without Singularity | |||||
Co-authors | D.A.Tretyakova, A.A.Shatskiy, I.D.Novikov | |||||||
Abstract |
We discuss a Brans-Dicke model with a cosmological constant, negative value of the $w$ parameter and an arbitrary (in general non-vanishing) scale factor at the Big Bang. We follow the approach of \cite{Uehara1982} in order to solve field equations analytically and to extend the study to a complete set of possible $w$ values. Our main result is that the scale factor (during it's evolution back in time direction) may not vanish, unlike in the standard $\Lambda CDM$ case. In other words, the considered model demonstrates a cosmological bounce instead of the initial singularity. |
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